$eftice nual FM €Iuartz Locked STEREO RECEIVER six-3s|oo ()proNEER' www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com MODEL SX.3gOO COMES IN TWO VERSIONS DISTINGUISHED AS FOLLOWS: Type Voltage Remarks KU 1 2 0 V o n l y U.S.A. model 5 / U I 10V, 120V, 22O and 240V (Switchable) U.S. Military model This service manual is applicable to the KU type. When repairing the S/G type, please see the additional service manual (see pages 47 -56l.. CONTENTS 1. SPECIFICATIONS 1. spECtFtcATtoNS 2 Power Amplifier Section 2' FRoNr PANEL FACILTTIES a Continuous Power 0utput 0f 120 wattsxper chan- 3' BLocK DIAGRAM 7 nel, min., at 8ohms from 20Hertz to 20,000 4. clRCUlr DESCRIPTIoNS Hertz with n0 m.re than 0.005% tolal harmo- 4.1 FM Tuner Section 8 niC diStOftiOn. 4.2 AM Tuner Section 9 To,rl Harmonic Distortion (20 Hertz to 20,000 Hertz, 4.3 Audio Section 9 g ohms) 4 . 4 D i s p l a y C i r c u i t s . . . . . . . 1 1 c o n t i n u o u s r a t e d p o w e r o u t p u t . . N o m o r e t h a n 0 . 0 0 5 % 4.5 Protection Circuit 13 60 watts per channel power 4'6 Surge current suppressor " " " ' l5 ,",1r',jlltr,r.ion oirioriion iuo rrrrrltrl;f ;::ltjT:"fl 1 E 5' DISASSEMBLY ' ' 15 continuous rated power output . . No more than 0.005% 6. PARTS LOCATION 16 60 watts per channel power 7. DIAL CORD STRINGING . 18 output ' . . . ' No more than 0.005% g. ADJUSTMENTS Frequency Response 8.1 Audio Section 1e rnpr.s.nriiiui,vli,.np.oun..t,i;ff T iorTln?,t'.2 *! aa 8.2 Tuner Section. 20 . . . . . 'l V/50 kilohms 9, SCHEMATIC DIAGRAM 24 OUtPUt 10. p.c. BoARDS coNNECTToN DTAGRAM 29 -speaker ' ' ' ' ' A' B' A+B Damping Factor (20 Hertz to 20,000 Hertz, 8 ohms) I 1 . P A R T S L I S T . 3 5 . . . 6 0 12. EXpLoDED vtEW 41 Hr..;; rtr.ir. iiHi, rrrortcircuiteo, A network) 1 3 . P A C K | N G . . . . 4 6 " " ' 1 1 5 d 8 ADDTTTONAL SERVTCE MANUAL FOR S/G TYPE 41 Preamplifier Section I nput (Sensitivity/lmpedance) PHONO 1,2. . . 2.5mV/50 kilohms AUX, TAPE PLAY 1, 2, A D A P T O R I N . . . . . . 1 5 0 m V / 5 0 k i l o h m s Phono Overload Level (T.H.D. 0.005%, 1,000 Hertz) P H O N O 1 . 2 . . . 3 0 0 m V OutPut ( Level/l mPedance) TAPE REC 1, 2. ADAPTOR OUT 150mV P R E A M P O U T ( R L : 5 0 k i l o h m s ) . . . . 1Vl1 kilohms (Volume: max.) Total Harmonic Distortion (20 Hertz to 20.000 Hertz) PHONO 1.2 (REC OUT) . . . . . . No more than 0.005% (10V output) www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com sx-3900 AUX, TAPE PLAY 1, 2. ADAPTOR IN No more than 0.005% (10V out p u t ) Frequency Response PHONO (R IAA Equalization) . . . 20 Hertz to 20,000 Hertz t0.2dB A U X , T A P E P L A Y 1 , 2 , A D A P T O R O U T Ton. contror ' ' ' ' ' 7 Hertz to 80 000 Hertz +9 dB BASS . !4dB/!7dB (100H2) f u rnover F requency : 2OOHz/ 400H2 T R E B L E + g d B / t 7 d B ( 1 0 k H z ) Tu rnover Frequencv : 2kHz I 4k{z Filter LOW. . 15Hz (-6dB/oct.) HIGH . 8kHz (-6dB/oct.) Loudness Contour (Volume control set at -40dB position) . . . . +6dB (100H2), +3dB (10 000H2) Hum and Noise (lH F, short-circuited, A network) P H O N O . . . . . . 8 6 d B A U X , T A P E P L A Y 1 , 2 , AM Tuner Section S e n s i t i v i t y ( l H F , F e r r i t e a n t e n n a ) . . ( l H F , E x t . a n t e n n a ) " . Selectivity Signal-to-Noise Ratio lmage Response Ratio l F R e s p o n s e R a t i o . . Antenna Audio Section Output ( Level/l mpedance) F M ( 1 0 0 % M o d . ) . AM (30% Mod.) . Semiconductors l C s . . . F E T s . Tra nsistors Diodes M iscellaneous Power Requirements Power Consumption Dimensions Weight (without package) Furnished Parts Operating instructions FM T-type antenna 300sV/m 1 SpV 30dB 50d B 40dB 40dB Ferrite loopstick a ntenna A D A P T O R I N . . . Attenuator. FM Tuner Section Usable Sensitivity (lH F ) 50dB Ouieting Sensitivity MONO S T E R E O Signal-to-Noise Ratio M O N O STE R EO Distortion (at 65dBf ) M O N O 1 0 0 H 2 . l k H z . 6 k H z ' S T E R E O 1 0 0 H 2 . i k H z . 1 05dB -20d8 9.8dBf (1.7pV) 14.2dBf (2.8pV) 36dBf (34.7pV) 83dB (at 65dBf) 78dB (at 80dBf) 0.1o/o o.o7% o J % O.27o o.15% O.2To 650mV/2.4 kilohms 20OmV /2.4 kilohms t 5 o 89 62 A C 1 2 0 V . 6 0 H 2 350W (UL) 526(W) x 176(H) x 452(D) mm 20-11/16(wl x6-1 5/16 (H) x 17-14/16(Dl in 2Okg (441b 2ozl 1 1 * Measured pursuant to the Federal Trade Commission's Trade Regulation rule on Power Output Claims for Amplifiers. NOTE: Specifications and the design subject to possible modifications without notice due to improvements. 6kHz Ca p t u re Ra t io. . 1.0d8 Alternate Channel Selectivity 4 0 0 k H z . . . . . . 8 0 d B Stereo Separation 1 k H z . . . . . . . 5 0 d 8 3 O H z t o 1 5 k l l z . . . . . . . 3 5 d B Frequency Response . . . . 2 O H z t o 1 5 k H z 1 ! j a a Spurious Response Ratio . . . . . . . 100dB l m a g e R e s p o n s e R a t i o . . . 9 0 d B l F R e s p o n s e R a t i o . . . . . . 1 0 0 d 8 A M S u p p r e s s i o n R a t i o . . . 6 0 d B SubcarrierProduct Ratio . . . . . . . 64dB S C A R e j e c t i o n R a t i o . . . . 6 4 d B Mu t in g Th re shold 19.2dBf (S g V ) Antenna Input . 300 ohms balanced, 75 ohms unbalanced. www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 2.FRONT PANEL FACILITIES O POWER SWITCH S e t t h i s s w i t c h t o o N t o s u p p | y p o w e r t o t h e r e c e i v e r . There will be a short delay when it is set to ON' because the muting circuit has been actuated to suppress the unpleasant noise that is sometimes generated when the Power is switched on and off ' @ BASS TURNOVER SWITCH Use this switch to change over the frequency in which the sound adlustment with the bass control is starting to take effect. Select 200H2 or 400H2 in accordance w i t h t h e c h a r a c t e r l s t i c s ' o f y o u r I i s t e n i n g r o o m a n d o f your speakers, and with your general preference' @ EASS AND TREBLE CONTROLS Use these controls to adiust the bass and the treble' lf you set the tone switch to ON and turn the bass c o n t r o I t o t h e r i g h t f r o m i t s c e n t e r p o s i t i o n , y o u w i | | b e a b | e t o e m p h a s i z e t h e s o u n d i n a f r e q u e n c y r a n g e w h i c h is lower than that selected by the bass turnover switch' Conversely, turning this control from the center position to the left will attenuate the sound' You can use the treble control to adjust the sound in a frequency higher than that selected by the treble turn- over switch. @ TONE SWITCH Set this switch to ON when adjusting the bass and treble controls. When set to the OFF position' the tone control c i r c u i t s a r e d i s e n g a g e d a n d f r e q u e n c y r e s p o n s e i s f | a t . Th isf u n ct io n isconvenientforcheckingphono c a r t r i d g e and speaker tone quality and listening room acoustics' O TREBLE TURNOVER SWITCH Use this switch to change over the frequency in which the sound adjustment with the treble control is starting to take effect' Select 2k{z or 4kHz in accordance w i t h t h e c h a r a c t e r i s t i c s o f y o u r I i s t e n i n g r o o m a n d o f your speakers, and with your general preference' @ noRProR swlrcH S e t t h i s s w i t c h t o o N w h e n r e p r o d u c i n g s o u n d f r o m a n optional component which is connected to the ADAP- TOR iacks. Always set it to the upper position if you are not using a component with these terminals' @ TAPE DUPLICATE SWITCH Set this switch to ON when you want to duplicate or edit a pre-recorded tape using two tape decks' @ TAPE MONITOR SWITCH Employ for tape playback or to monitor a recording in progress. 1: Playback or monitoring of a tape deck con- nected to the TAPE 1 jacks' SOURCE: Be sure to set to this position when not using the tape deck for playback and moni- tori ng ' 2: Playback or monitoring of a tape deck con- nected to the TAPE 2 jacks' NOTE: When listening to records or broadcasts' be sure to set this switch to SOURCE' Sound witt not be obtained from speakers if it is set to 1 or 2. www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com €) BALANCE CONTROL Use this control to balance the volume of the left and right channels. First, however, set the mode switch to MONO. lf the sound appears to be louder on the right, it means that the volume of the right channel is higher. Turn the balance control to the left and adjust. Con- versely, if the sound appears to be louder on the left, it means that the volume of the left channel is higher. Therefore. turn the balance control to the right and ad just. After adjusting, return the mode switch to S T E R E O . @ MODE SWTTCH Use this switch for selecting mono or stereo perform- a nces . STEREO: Set to this position for normal operations. MONO: When set to this position, the left and right channel signals will be mixed and repro- duced monophonically from both speaker systems. o voLUME CONTROL Use this control to adjust the output level to the speakers and headphones. Turn it clockwlse to increase the output level. No sound will be heard if you set it to -. The scale is graduated in dB which indicate the attenuation when the maximum output level is 0dB. €) MUTING SWITCH Set this switch to the *20d8 position to attenuate the audio output indicated by the volume control by 20dB. There is no need to adjust the volume control if you use this switch when turning down the audio output tem- porarily and when changing over records or tapes. G) HEADPHONE JACK Plug the headphones into this jack when you want to listen through your stereo headphones. Release both speaker switches if you want to listen to the sound through your headphones only. (E SPEAKER SWITCHES Depress the switch corresponding to the speakers con- nected to the SPEAKERS terminals (A or B) on the rear p a n e l. You can depress both of these buttons to listen to the sound from two pairs of speaker systems at the same t ime . six-39cl(f @ LOW FILTER SWITCH (15H2) Depress this switch in the event that turntable rumble, recording cutting noise or other low frequency noise becomes objectionable. Attenuation in the frequency band below 15Hz is 6dB/octave. G) HIGH FILTER SWITCH (8kHz) Depress this switch if record scratch noise or other high frequency noise becomes objectionable. Attenuation in the frequency band above SkHz is 6dB/octave. €) POWER METER This meter allows you to read out the rated power level on the fluorescent display tube when speakers with a nominal impedance of 8 ohms are connected to the speaker terminals. @ DrAL POTNTER This pointer indicates the broadcasting stations. @ rnn STEREo rNDrcAToR This indicator lights up when receiving an FM stereo program if the FM muting off switch is released. @ oUARTZ LOCKED |ND|CATOR This indicator lights up after the optimum tuning point has been obtained and displays that the receiving state is stabilized by the built-in quartz lock circuit. €D SIGNAL INDICATOR This indicator lights in sequence from left through right during the tuning of an AM or FM broadcast in accord- ance with the strength of the signals being received. The optimum tuning point is where the maximum number of indicators light. @ rururNG rNDrcAToR When tuning in an FM station, the optimum reception point is indicated when the center indicator lights up. When the left indicator has come on, rotate the tuning knob slightly clockwise. When the right indicator comes on, rotate the knob slightly counter-clockwise. @ FREOUENCY DISPLAY This indicates the frequency which is tuned. With FM reception, the letters "FM" appear on the left of the display and "MHz" on the right. With AM recep- tion, "AM" appears on the left and "kHz" on the right. These change when the function selector position is cha nged. @ TUNING KNOB Use this knob to tune in to broadcasting stations. 5 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com @ FM MUTING OFF SWITCH When this switch is released and an FM broadcast tuned in, the muting circuit is activated inside to suppress the annoying interstation noise between the broadcasting frequencies for noise-free reception' When the broadcast- ing station is far away or when receiving a station in a fringe area, set tne switch to the OFF position and then tune in. lf there is a broadcasting station with a strong signal level on the air next to a station whose program you want to receive, you may not be able to tune in satisfactorily because the sound will be drowned out by the stronger signals' In cases like this' set the FM MUTING OFF switch to OFF (depressed position) and tune in. The muting circuit does not work when the tuner is receiving AM broadcasts' lf tuning has been performed after the FM MUTING OFF switch has been depressed and a station selected. the quartz locked circuit is set to the OF F mode and the LOCKED indicator does not light. @ FM 25PS SWITCH Depress this switch when listening to a Dolby* FM broadcast; otherwise keep this switch at the released position. @) BRIGHTNESS SELECTOR Use this switch to select the brightness of the power meter and the frequencY disPlaY' BRIGHT: When using the receiver in daylight or other @ FUNCTION SELECTOR Deoress the function switch which corresponds to the program source. Turn the volume control down first before selecting a different function switch while the sound from one program source is being reproduced' F M : AM: Depress this switch for FM broadcasts' Deoress this switch for AM broadcasts AUX: Depress this switch when listening to an audio component connected to the AUX iacks. PHONO 2: Depress this switch when playing a record on the turntable connected to the PHONO 2 jac k s. PHONO 1: Depress this switch when playing a record on the turntable connected to the PHONO 1 i acks. NOTE: OnlY one function switch should be depressed at a ilme' @ LOUDNESS SWlrcH When listening to a performance with the volume control turned down, depress this switch and the bass and treble will be accentuated' When the volume is low, the human ear f inds it harder to hear the bass and treble than when the volume is high' The loudness switch is thus designed to compensate for this def iciency. By depressing this switch' the bass and treble come through much more strongly and the sound takes on a puncn even when the volume control is turned down. bright locations' DIM: At night or in dark locations when the exist- ing brightness is too high' * T h e w o r d , , D o l b y ' ' i s a t r a d e m a r k o f D o I b y L a b o r a t o r i e s I n c . www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 3. BLOCK DIAGRAM Tuner Section sx-39clcl OUARIZ LOCKEO A M T U N E R A M O Audio Section IAPE 1 _-. ^ .":- ADAPrcR REC PLAY OUT IN R CnANNE- . IHL SAME A5 IHF L CHAN\EL ) F R E A ! E N C Y a r l r 'UIER SECTION FL TUSE rc ( HAl2010 ) 5 - P O I N T S I G N A L INDICATOR ORIVE rUN]NG INDICATOR FREOUINCY OISPLAY F M M H z , O D D D , t_, t_t.t_t t_t A M K H T C o U N T E R O i - D 5 TIME DIVISION 7- SE6M€NT OECOD€R ROM s1 s2 s3 s4 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 4. CIRCUIT DESCRIPTIONS 4.1 FM TUNER SECTION Front End The FM front end of SX-3900 includes a 4 ganged tuning capacitor, a dual-gate MOS FET- Eo"Too"A l-slage RF amplifier' and a modified ai;; circuit llcal oscillator' This oscillator is a uoiiug" controled oscillator employing a vari-cap (varia'ble capacitance diode)' When the.quartz-lock ,yrt"..t (refer to "Quartz-lock system") is not in operution, a constant voltage is applied to the diode. lF Amplifier and Detector These employ 3 ICs and 3 dual-element ceramic filters. fne lC (HA1201) of the first 2 stage con- stitutes a single-stage differential amplifier current- ii-lti.rg limitet. The IC (PA300?-A)-in the third stage, an improvement on the former iF system IC liigool ai, includes an iF iimiter amplifier' quadrature detector, meter drive' and other cir- cuits. Performance in terms of distortion' S/N ratio, delay characteristics, and other parameters' ,ho*, a marked improvement in comparison to the PA3001-A. Ouartz-Lock SYstem The quartz-lock system featured in the SX-3900 stereo receiver is a frequency serl/o control system employing a crystal resonator' Any displacement i.r itt"-lntlrmediate frequency (IF) is detected as a DC voltage by the discriminator (equipped with a crystal resonator)' resulting in the local oscillator ir"qt"r-r"y being corrected and subsequently locked. This extremely stable frequency servo con- trol system thus ensures that tuned frequencies remain tuned securely for as long as required' When the IF signal appears at pin no'17 of the IF system IC (PA300?-A), it is amplified and ap- ptiei to a crystal detector (see Fig' 4-1) which con- sists of diodes connected in parallel in a series resonance circuit equipped with a crystal resona- i.r. irt" resonance frequency is the same as the IF fr"qr".r"y (10'?MHz), which means the impedance at it ls time will be minimal, resulting in the out- fut being reduced to a minimum level' If the input iruq.r"rr"y increases- the reactance of the capaci- tanie stage (C) is reduced, and the reactance of the ir"rar"tun"u stage (L) increased, resulting in AM Jetection by D2 which leaves the positive portion of the IF signal. If the input frequency decreases' L stage reactance is decreased and C stage reac- tance increased, resulting in AM detection by D1 which leaves the negative portion of the IF signal' it'r" t stage and C stage reactances inctease as the degree oidetuning in the respective directions is in&eased, resulting in a subsequent increase in the detector output. By thus attaining S-curve characteristics, FM detection becomes possible' Since the IF signal is an FM signal frequency devia- tiorl-a"" to iodulation, it will be symmetrical about a central axis. And if the central frequency is equal to the resonance frequency, the detector out- o,rt OC level will be zero. If, however, there is any displacement in the central frequency, frequency deviation in respect to the detector will become aryrrr-utri"a1, resulting in the generation of a DC "liiug". This DC voitage is passed through LPF1 (IF filter) and LPF2 (AC filter) to form a correc- iion voltage which is applied to the variable capaci- tancediodeinthelocaloscillator,therebycorrect- ing the oscillator frequency to obtain a constant tn' (i.e. a constant tuned frequency)' Since the central frequency of the crystal detec- tor is regulated by the crystal resonator' tuned frequencies of exiremely high stability are ob- tained. lc ( PA 5007-A ) FM FRONT END CRYSTAL DETECTOR | ----, I : ( L ) 1 3 + i C I R C U I T Fig. 4-1 Ouartz Lock SYstem a www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com o Limiting the Locking Range If the quartzJock range is too wide, it will overlap with strong adjacent broadcasting fre- quencies and result in considerable tuning diffi- culties. A DC amplifier is therefore used as a limiter (limiter action by NFB circuit zener diodes) which restricts the voltage applied to the variable capacitance diode, thereby limiting the quartz-lock range. A DC voltage appears at pin no.13 of the IF system IC (PA3007-A) when the antenna input ievel drops below 5pV, or when the tuned fre- quency has been detuned by more than t100kHz. This DC voltage (FM muting signal) is applied to the gate of Q2 (FET) via a Schmitt circuit, result- ing in the FET being turned on, and the quartz- Iock circuit being turned off. Multiplex Decoder The recently developed multiplex decoder IC (PA4006-A) combines MPX decoding with muting functions in a single IC, thereby handling the functions of the more conventional MPX IC (PA1001 A) and AF MUTING IC (PA1002-A). Distortion ratings and S/N ratio have been further improved by incorporating a chopper type MPX decoder. The chopper type switching circuit (see Fig. 4-2) operates by switching the signal either to ground or to the through circuit, thereby eliminating the generation of unwanted noise or distortion. Furthermore, since the PA4006--4 fea- tures DC direct-coupled switching with the detec- tor, there is no deterioration in separation at the Iow frequency end. Besides the decoder and muting circuits, the PA4006-.4 also incorporates the pilot signal cancel- ler, stereo auto selector, VCO killer circuit, MU'l amplifier. and MUT control circuit. Composite s ignal I n p rt O u t p u t JUIIUUUIJUIJU' .}. I switchins ,in"r'r S/ --'I n L Fig.4-2 Chopper Type Switching Circuit 4.2 AM TUNER SECTION The AM tuner section consists of a 2-ganged tuning capacitor plus an IC (HA1197) which con- tains a 1-stage RF amplifier, converter, 2-stage IF amplifier, detector, and AGC circuit. The AM STEREO OUT terminal on the rear panel is for connecting to an AM stereo broadcast decoder adaptor. The signal appearing at this ter- minal is the converter output passed via a buffer (emitter-follower) stage. sx-39clo 4.3 AUDIO SECTION Phono Equalizer Amplif ier Fig. 4-3 shows the basic configuration of the circuit. An S-N ratio of 86dB (at 2.5mV input, IHF-A) has been achieved by using a ultra-low- noise PNP transistor (2SA978) at the first stage, and reducing the signal source resistance and equalizer element impedance. High voltage gain is provided in the following stage by a bootstrap cir- cuit. The output stage is a complementary sym- metrical SEPP circuit. The high voltage utility factor of the SEPP circuit provides a high maxi- mum output voltage. Dynamic range of the equalizer amplifier is therefore wide and overload input level at 0.005% distortion is 300mV (rms at lkHz). tNHMrl Tone Control Fig. 4-4 shows the basic configuration of the circuit. This circuit is an NFB type tone control with IC (HA12017P). Tone control (BASS, TREBLE) is accomplished by providing the tone amplifier NFB circuit with a frequency selective characteristic. The capaci- tance of C7-C4 are changed by the TURNOVER switches (by adding another capacitors in parallel) to provide selection of the frequency. The NFB circuit is changed to a flat frequency characteristic when the TONE switch in the OFF oosition. F i g . 4 - 3 P h o n o E q u a l i z e r A m p l if i e r Tone Control www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com Power AmPlif ier Section o Amplifier Circuit The basic circuit arrangement of the power "-pilii"t it shown in Fig' 4-5' The -first stage is a aiti*""ti"f amplifier comprising PNP twin transis- i.t te2l, the load circuit of which is a current ;*;; employing an NPN twin transistor (QB)' Thecurrentmirrorprovidespush-pulloperationin this stage, which serves to cancel even harmonics and further increase gain' -- Qf in the input &cuit absorbs outflow of base current from Q2, and prevents the generation of a DC voltage. Because Q1 follows any temperature drift in Q2, temperature drift of the center point voltage is Prevented. The pre-driver stage (Q4, Q5) is. a Darlington **g"-".rt, the load circuit of which employs a constant-currentsource(Q6)resultingahighvolt- age gain. " Tite power stage bias voltage is supplied by the high spe"a bias sewocontrol circuit' The high speea bias servocontrol circuit provides non- ,^*it"t ing operation in the power stage (refer to ;'High Speea Bias Servocontrol Circuit")' The power stage (Q7 - Q12) is a.2-stage Darling- ton arrangement, tite tinat stage is parallel SEPP circuit. Bicause there is no time constant in the NFB circuit in the low frequency region' amplifi- cation is possible down to DC (DC inputs will be ""l.it, however, by the input coupling capacitor)' o High Speed Bias Servocontrol Circuit By operating the power stage.only within the active region 1no possible cut-off).and with mini- mum idle current,'the high speed bias servocontrol circuit prevents the generation of switching dis- tortion and reduces heat loss' This circuit is outlined in Fig' 4-6' When there is no signal applied to the circuit' Q1 and Q2 are almost iut off' while Q3 and Q4 will be on' The uoitug" across the collector and base of both of these transistors (Q3 and Q4) at this time may be disregarded. Consequently, with the power stage ||'.l *l I nl bias circuit consisting of 4 PN junctions formed by Q3, D3 and Q4, and VR1' --Witft R1 and D1 ensuring a constart flow of current, the base of Q1 and point X may be brought to the same level on an AC basis (level fluctuationsduetothesignal)byasimpleshiftin DC level. Furthermore, Q1 may be considered "-iti"t-toffower with R3 as the emitter resistance' - When the voltage across points Y and X is in- creased by the positive portion of th.e signal ap- ;i*i-;" itrls cirluit, it becomel. the input signal it-trri, emitter_follower (Q1). since the emitter- followervoltagegainispracticallyl,avoltage m o r e o r l e s s e q u a l t o t h a t o f t h e i n p u t s i g n a l iirr"i it, the voltage increase across points Y and X) ir^*"J"""a at R5. And the R3 voltage is the volt- age applied across the base and collector of Q3 which forms part of the power jt"g: Pi"t circuit' il;h" bias voltage applied to Q3 will be in excess by the same amou"i ttt" voltage across points Y and X increased (by positive portion. of the signal) above the voltage level when no signal is being applied. Consequently, the increase 1" l:]1"?: lii"t. o.i"ts Y and X cancels the decrease rn toii"g"'u"t"ss points X and Z't}r,ereby maintaining the idle current without cutiing the PNP power PRE- OR I VER t'n. d-d "easi" Clrc,itrv of Non-switching Amplifier Power AmPlifier Circuit F is. 4-5 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com stage off (noting that there actually is a slight de- crease in current). For the negative portions of the signal, Q2 and Q4 are operated in the same man- ner, thereby preventing the NPN power stage from being cut off. 4 . 4 D I S P L A Y C I R C U I T Power lndicator Circuit The SX-3900 output power indicators feature fluorescent indicator tube (FL tube). In this tube, thermionic emissions from the cathode are ac- celerated into the fluorescent substance of the segmental anodes, resulting in the emission of light. This tube is used to indicate numerals, letters and other symbols. An outline of the FL tube drive circuit is shown in Fig. 4-7 .'lhe output circuit signal is first passed through a low-pass filter and a compressor circuit before being applied to pin no.6 (4) of the IC (TA7318P-A). The compressor circuit makes use of the non-linearity of rising portion of the diode's Vd-Id characteristics to contract the signal dynam- ic range by 20dB. The IC contains a detector cir- cuit, compressor (40dB), and peak hold circuit for both left and right channels. The dynamic range of the signal is thus contracted by 6OdB to obtairr a "peak held" DC voltage. The output power indicator segments of the FL tube are driven by the HA12010 ICs (one for each channel) equipped with 12 pairs of voltage com- parators. These comparators are biased at increas- ing levels, so each comparator will commence to operate separately as the input level increases. And since these comparators apply the voltages to the output power indicator segments, each succes- sive segment will light up in tum as the input level rises. L P F F M - A M S E L E C T I O N F L T U B E S I G N A L Fig. 4-9 Frequency Display Circuit t c ( f A 7 3 1 8 P - A t 1 / 2 AM LOCAL OSC,S I GN AL FM LOCAL OSC,S IG NA L tc ( HAi2oro ) -- -- trn Dtr !! !I EE trn Dt] t l l O.O1 O.1 1 10 pO F L T U E E Fig.4-7 Power Indicator Circuit 5;6141+O---1-t!rr-f{ ' | N + + t m 7r7 I f l t l E - - f l I w(8rl ) o.oo1 sx-39ocl Frequency Display Frequencies received by the SX-3900 are dis- played in digital form by fluorescent indicator tube (FL tube). Each digit employs up to 7 seg- ments (a - g) (see Fig. 4-8) to display all numerals from 0 to 9 (with the exception of the left hand digit which employs only 2 segments b and c). oF Fig.4-8 7-Segment Digit Display The signal source during both AM and FM recep- tion is the local oscillator. The signal is passed via a buffer amplifier (FET) to the prescalar IC (M54451P) where it is subjected to frequency divi- sion (1/8 for AM and 1/80 for FM) before being applied to the frequency counter IC (PD5009). This IC is responsible for the dynamic drive of the 7-segment 5-digit display (each digit being tumed on according to time-shared sequential scanning). r c ( P 0 5 0 0 9 ) r c ( M 5 4 4 5 1 P ) www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com D5 D4 03 V c c G N O Fio.4-10 Block Diagram of Counter lC (PD5009) An outline of the composition of PD5009 is given in block diagram form in Fig' 4-10' With the FL tube a - g segments (anode) for each digit con- nected in parallel, the D1 - D5 time division pulse ;i;"dr (rel nig. 4-11) applied to each grid (inde- G;J""i grid ior each digit) result in .the digits being Iit up in succession from the left hand side' nacf," aigit is lit up for 1ms during each 5ms inter- tul. Pin"no.? of PD500g is the brightness selector terminal. The time division pulse width is set to ;00u; for H level input signals, and to 200ps for L Ievel signals, therety varying the degree of FL tube brightness (by varying the segment lighting perioa). "Note that since the power indicator FL iune is driven by static drive, the degree of bright- ,r"rr rrruy be varied by changing the grid voltage' ffre f.f ZUHz crystal oscillator generates the basic signal used in the preparation of the time aiuirlon.-p.tlse signal and the counter gate circuit control signal. FROM -- PR ESCAL A R Table 1 Terminals S1 - 54 (pin nos'3 - 6)^are used in d"i;;;tt"; reception mode' The 2 reception ;;d"t emptoved in the SX-3900 (see Table 1) are ;;;;;;J bv varving the combination of input ;;;i; iH uni l;' -rri" s different IFs during FM ;.;; )re required in coping witir ]f offset in the IF ceramic filter stage, 53 and 54 being preset arrring FM mode acc-ording to the ceramic filter characteristics. "^'Aftfto.,gft the SX-3900 FM stage quartz-lock .Vrt"- is "capable of locking any frequency within ;ir;FM bani, the 10kHz digit (digit in the second d e c i m a l p l a c e ) i n t h e F M f r e q u e n c y d i s p l a y w i l l appear onlY as 5 or 0' .*htu fr"qrrerr"y display FL tube-also incorporates ttre iUNf-fqC ana ^SiCXaL inclicators' And al- though the segments (anode) for these indicators ur" ,iuti" driven uy itre corresponding drive cir- ",ritr, tf," grid is driven according to the D3 time liilit" pu"lse timing, thereby placing the segments ;;J", djnamic a'iul' ttt addition' the AM and FM indicatorsinthelrequencydisplaysectionarelit according to the OS timing' while the kHz and MHz indicators are lit according to the D1 timing' D I G I T D R I V E R B R IGHT NESS SE LECTION M U L T I P L E X E R coNTROL CIRCUITLATCH LOAD GATE P R E S E T A A L E 5 ' D I G I ' T D E C I M A L C O U N T E R DECI M AL C O U N T E R 2 2 - B l T x 1 6 R O M lntermediate f requencY 1 0 . 6 7 M H 2 '10.70MH2 1 0 . 7 3 M H 2 F ig. 4-1 1 D isit Signal www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com TUNING lndicator Circuit The TUNING indicator consists of a center tuning indicator (which lights up when a broad- casting station frequency is properly tuned) and 2 detuning direction indicators which indicate the direction in wnich the station has been tuned away from. The corresponding drive circuits are out- lined in Fig.4-72. The TUNING indicator is activated once the station has been tuned to within t100kHz of the center frequency. This is because Q16 is turned on and Q21 turned off (resulting in the detector differential amplifier [Q19 & Q20] being turned off and Q24 being turned on) by the FM muting signal appearing at pin no.13 of the IF system IC (PA3007-A) and passed via the Schmitt circuit (Q17 & Q18) when the station is tuned away by more than t100kHz. The DC voltage on pin no.4 of PA3007-A describes an S curve when tuning to and away from a particular broadcasting frequency, the voltage on pin no.2 serving as the reference level. This DC voltage is amplified by the differential amplifier (Q19 & Q20) and then applied to a polarity detec- tor switch circuit (Q22 & Q23). When tuning to a frequency from the high fre- quency side (or tuning away from the frequency to a higher frequency), the voltage on pin no.4 will be higher than that on pin no.2. The Q20 collector voltage will thus be lowered and the Q19 collec- tor voltage raised, resulting in Q23 being turned on, and the higher frequency (right hand side) detuning direction indicator also being turned on. When, on the other hand, the broadcasting fre- quency is approached from the low frequency side (or when tuning away to a lower frequency) the pin no.4 voltage will be lower, resulting in Q22 being tumed on to light up the lower frequency (left hand side) detuning direction indicator. Wherl either Q22 or Q23 is on, the Q24 base voltage will be high, resulting in Q24 being tumed on and Q25 turned off, which means that the center tuning indicator will not be lit up. Once the broadcasting frequency has been tuned properly, the voltages on pin nos.2 & 4 will be equal. Consequently, Q22 and Q23 will both be turned off, which means that neither of the detun- ing direction indicators will be on in this case. And since Q24 is turned off because of the de- creased base voltage, Q25 will be turned on, and the center tuning indicator light up. Furthermore, C77 is charged up via R99, resulting in Q26 being turned on, thereby lighting up the Quartz Locked indicator LED. sx-39ocl SCHl,llTT C I R C U I T F i g . 4 - 1 2 T u n i n g I n d i c a t o r C i r c u i t SIGNAL Indicator Circuit The SX-3900 SIGNAL indicator consists of an FL tube 5-point indicator display. The signal meter drive signal obtained from the FM IF system IC (PA3007-A) and AM tuner IC (HA1197) is first amplified and then applied to the indicator drive IC (HA12010). This IC contains 12 pairs of voltage comparators similar to those employed in the power indicator circuit, 5 of these pairs being used to drive the SIGNAL indicator (Fig. -13). 4.5 PROTECTION CIRCUIT The purpose of this circuit is to protect both the speakers and the power amplifiers. The relay in the output circuit is automatically opened in any of the following cases: 1. During the "transient operations" when the power supply is tumed on and off. 2. Upon detection of a DC voltage in the output circuit, caused by component failure or acci- dent. 3. Upon detection of an overload, caused by a short circuit in the load. Muting Operation when Power Supply is Turned On and Off With reference to Fig, 4-74 when the power supply is turned on, Q5 turns off due to -B (The time constant of the -B circuit is very small.). If there is no input (DC) on Q3 and Q4, they will be off, and the timing capacitor C4 charges up through R8 and R7, and thus Q6 turns on. When Q6 conducts, the relay operates, and the output muting on the power amplifier will be removed. When the power supply is turned off, -B will www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com lc ( HA12010 ) Fig. 4 - 1 3 S i g n a l I n d i c a t o r C i r c u i t abruptly decay, and Q5 will conduct owing to the residui component of +B. As a result, C4 will rapidly discharge, Q6 will cease to conduct, where- upon the relay will become de-energized and restore muting. DC Voltage Detector The output circuit is connected to the Q3 emit- ter and qa trase via a low-pass filter (R5, C2)' Any DC voltages appearing the output circuit of the power amplifier, it will be applied to the Q3 emitter and Q4 base. If the voltage is positive, Q4 turns on. C4 will rapidly discharge' If the voltage is negative, QB tums on' C4 will rapidly discharge' As consequence, Q6 will turn off and the relay will become de-energized, thus causing the output circuit to oPen. Overload Detection The overload detector circuit incorporates the load (RL) in one side of a Wheatstone bridge (see Fig. 4-15). The base and emitter of a sensing tra'nsistor (Q2) are connected to the opposite corners of ttre bridge, so if RL decreases, Q2 will become forward biased. If RL falls below a pre- scribed value, Q2 will turn on' C4 will rapidly discharge. As consequence, Q6 will tum off and the relay will become de-energized, thus causing the output circuit to oPen. Fig. 4-15 Overload Detector Fiq. 4-14 Protection Circuit www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 5. DISASSEMBLY Wooden Cover Remove the two screws (O o.r each side of the wooden cover. Bottom Plate Remove the thirteen screws Q to detach the bottom plate. Front panel sx-39ocl Front Panel Remove all the knobs by pulling. liemove the two screws @ from the top edge of the front panel. Remove the two nuts @ from the control shafts. 4.6 SURGE CURRENT SUPPRESSOR Since the SX-3900 employs a large toroidal power transformer and two 15,0009F capacitors in the power supply circuit, the sudden surge of current when the power supply is turned on may reach several hundred amperes. The surge current suppressor circuit used to reduce this sudden surge is shown in Fig. 4-16. When the POWER switch (S1) is OFF (i.e. no supply of AC power), the relay contact (S2) is open. But when this switch (S1) is tumed ON, the sudden surge of current is passed through R1-, thereby greatly reducing the flow of current. When the output DC voltage of the power supply circuit reaches a certain prescribed level, 52 will close, and R1 consequently be by-passed. The time required for this to occur, however, is considerably shorter than the time required for the muting circuit to operate when the power supply is tumed on, so there is no undue effect upon normal opera- tion of the receiver. Microtemp is a temperature-sensitive fuse coupled to R1. If 52 fails to close due to an abnormality in the power supply circuit or relay, the heat generated in R1 will cause Microtemp to below, thereby opening the primary circuit. When the POWER switch (S1) is tumed OFF, the relay driving circuit is opened, thereby opening 52 and the primary circuit. .tt '- \ \-- 7 '-=.::att/7 \ )rt" S Bottom plate RELAY Fig.4-16 Surge Current Suppressor Circuit www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 6. PARTS LOCATION Front Panel View Fluorescent indicator tube AAV-OO8 Front panel assembly AN8.861 Knob (SPEAKERS) AAD.226 Knob (BASS, TREBLE, T U RNO V E R) AAB-239 Wooden cover The A marh found on some component parts indicates the iiportance of the safety factor of the part' There- fore, when replacing, be sure to use parts of identical designation. K n o b ( F I L T E R , F M , B R I G H T / D I M } AAD.227 Fluorescent indicator tube AAV-OO7 K n o b ( F U N C T I O N ) AAD-226 Knob (TUNING) AAA-065 Knob (LOUDNESS) AAD-227 Knob (MODE, MUTING) AAD.1 39 'K n ob ( V O L U M E ) AAB-238 Knob (BALANCE) AA8-239 Lamp with wires AEL-069 Lamp with wires AE L-095 Lamp with wires AEL-069 Tuning shaft assemblY AXA-260 Push switch (LOUDNESS) ASG-230 Lever switch (MUTING -2OdB} ASK-1 52 4-gang variable resistor (VOLUME) ACW-304 Lever switch (MODE) ASK.1 52 variable resistor (BALANCE) ACT-133 Remote lever switch (TAPE MONITOR) ASX.1 31 Remote lever switch (ADAPTOR, DUPLICATE) ASX.128 minal (PRE AMP OUT/POWER AMP lN) AKB-063 ,ATerminal (SPEAKERS) -AKE-054 I AC socket (AC OUTLETS) AKP-041 I AC power cord ADG.O29 Terminal (TAPE, ADAPTOR) AKB-063 AMM-087 knob (POWER, TONE, ADAPTOR,- DUPLICATE, TAPE MONITOR) AAD.1 39 Front View with Panel Removed Push switch (BRIGHT/DlM) ASG-230 Dual push switch ASG-229 Lamp with wires AEL-047 Phone iack (PHONES) AKN-O30 Remote switch (SPEAKE RS) ASX-137 ,A Lever switch (POWER) -nsr-soz Slide rotary switch (BASS TURNOVER} ASE-1 25 2-gang variable resistor (BASS) ACT-134 Lever switch (TONE) ASK.152 2-gang variable resistor (TREBLE) ACT-134 Slide rotary switch (TREBLE TURNOVER) ASE-126 Rear Panel View Terminal (INPUT) AKB-064 Bar-antenna ATB.624 Terminal (AM STEREO OUT) AKB-076 Terminai (ANTENNAI AKA-o13 1 6 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com c f \ /r \t"- II Top Viw Rectifier assembly A W R . 2 1 1 Electrolytic capacitor 1 5.O00p F, 71 V ACH-210 Bottom View Tuner assembly GWE-132 s)<-39clct Speakers terminal assembly GW3-222 Equalizer assembly AWM-226 Power amplif ier assembly AWH-097 Detector assembly GWX.463 Tuner assembly GWE-132 Indicator assembly AWV-OO8 Lamp socket AKK-OO5 Lamp (wedge typel AE L.029 Tone amplif ier assembly GWG-140 r t ; ! www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 1 . 2. 3 . 4 5 . 7. DIAL CORD STRINGING Remove the wooden cover and the front panel. Turn the tuning capacitor shaft fully clockwise. Fix the tuning drum to the tuning capacitor shaft so that the set-screw is uppermost. Tie one end of the dial cord to the spring. Pass the cord through the cutout section in the tuning drum. Wind it ll2 turn around the tuning drum, and then take it over pulleys A, B, C, D and E in that sequence. Wind the cord around the tuning shaft 3 times. Pass it over pully F, wind it around the tuning drum 2 times, and finally tie it to the spring so that it is tensioned. Tuning capacitor E \ D Dial pointer 7" Tum the tuning shaft and check that the cord moves smoothly. Cut off any excess cord. 8. Tum the tuning shaft counter-clockwise as far as it will go. 9. Align the dial pointer with the starting point of the dial scale (third division from the left), and then pass the cord over it. 10. Check that the dial pointer is in line with the starting point of the dial scale. 11. Finally apply the locking paint to the knot of the cord and the dial pointer connection. 12. If the tension of the cord is weak, move the spring to the projection B. Spri ng o . T u n i n g d r u m Dial pointer connection Tuning drum B Tuning shaft 1 A www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 8. ADJUSTMENTS 8.1 AUDIO SECTION Power Amplifier Turn VRS, VR5 (L) and VR4, VR6 (R) fully around in the counter-clockwise direction, but set VR1(L) and VR2(R) to the center positions. Without any load or input signal, tum the POWER switch ON. o DC Balance 1. Adjust VR1(L) for 0V(to within t30mV) between terminal No.30 and ground. 2. Adjust VR2(R) for OV(to within t30mV) between terminal No.29 and ground. o Idle Cunent 1. Adjust VR3 (L) for 56mV between terminals No.12(+) and No.11(-). 2. Adjust VR4 (R) for 56mV between terminals No.9(+) and No.10(-). 3. Adjust VRb (L) for 70mV between terminals No.12(+) and No.11(-). 4. Adjust VR6 (R) for 70mV between terminals No.9(+) and No.10(-). Power transformer sx-3s|clcl Output Power Indicator Calibration 1. Apply a IkHz signal to the POWER AMP IN terminals (or any other input power amplifier input terminals). 2. Adjust the level of this input signal so that the voltage on the output terminals (SPEAK- ERS) read 8.95V(rms). 3. Adjust VR1(L) and VR2(R) so that the out- put power indicator read 10 watts. rz ir 3ozg ro 'g lnd icator assembly VRs VR3 VR1 vR2 V R 4 V R 6 Fig. 8-1 Power amplif ier adjustments 1 9 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 8.2 TUNER SECTION FM Tuner o Connect the FM SG (FM signal generator) to the FM ANTENNA 300Q terminals via a 300O dummy antenna. o Switch the FUNCTION selector to the FM posi- tion, the FM MUTING OFF switch to the OFF position. o L5 and L6 are coreless coils which may be adjusted by extending one turn of coil out to- wards tuning capacitor (see Fig. 8-2). 1. Set the SX-3900 dial pointer to a frequency in the 106MHz region so that there will be no input signal. 2. Rotate the N core of T2 so that the voltage between no.B and no.7 terminals on the tuner assembly is reduced to DC 0V. 3. Next tune the dial pointer to 106MHz, and set the FM SG outPut to 106MHz, 60 to 80dB (modulation - 40OHz, t71kHz deviation). 4. Adjust TC1 so that the voltage between no.8 and no.7 terminals is reduced to DC 0V and maximum reading of the SIGNAL indicator. 5. Then tune the dial pointer to 90MHz, and set the FM SG output frequency to 90MHz. 6. Rotate the L8 core so that the voltage between no.B and no.? terminals is reduced to DC 0V and maximum reading of the SIGNAL indica- tor. 7. Repeat steps 3 to 6 above. 8. Reset the FM SG output level to 20 - 30dB' and adjust "1C2, "1C3, TC4 and T1 at 106MHz, and L2, L5 and L6 at 90MHz in the same man- ner as described in steps 3 to 7. These adjust- ments will ensure optimum sensitivity between the two extreme frequencies. 9. Retune to a position with no input signal. 10. Rotate the A core of T2 so that the voltage between no.8 and no.7 terminals is reduced to DC OV. 11. Set the FM SG output to 98MHz and 60dB (modulation - 4O0Hz, x7lkHz deviation), and tune the SX-3900 to this position (fine adjust the tuning knob to ensure a DC 0V reading between no.8 and no.7 terminals). 12. Then rotate the B core of T2 to reduce distor- tion in the demodulator output (TAPE REC terminal) to minimum. 13. Repeat steps 9 to 12 above until both specifica- tions are satisfactorilY met. 14. Set the FM SG output to 98MHz and 60dB, and tune the SX-3900 to this position. 1-5. Adjust VR2 so that the SIGNAL indicator (5-point display) reads "5". 16. Turn the FM MUTING OFF switch to the ON position, and set the FM SG output level to 20d8. 17. Adjust VR1 to bring the input level to the starting point of the muting operation. MultiPlex Decoder o Connect the MPX SG (FM multiplex generator) to the FM SG external modulator terminal. o Set the FM MUTING OFF switch to the OFF position. 18. Set the FM SG output to 98MHz and 60dB (unmodulated), and tune the SX-3900 to this position (fine adjust the tuning knob to ensure a DC 0V reading between no.S and no.7 ter- minals). 19. Adjust VRb to obtain a 76kHz signal at termi- nal no.6. 20. Set the FM SG output level to 60dB, and the modulation mode to external. Then with the MPX SG, set Main off, and pilot signal to t7 .lkHz deviation. 21. Adjust VR4 to reduce leakage of the 19kHz pilot signal (in both channels) to a minimum (at TAPE REC terminals). 22.Set the FM SG output level to 80dB, the MPX SG Main to 1kHz, L+R to t67.1kHz deviation, and pilot signal to !7 .1kHz deviation. 23. Rotate the T1 core around by up to 90' in either direction to reduce the demodulator output (TAPE REC terminals) distortion to a minimum. 24. Then set the FM SG output level to 60dB, the MPX SG Main to 1-kHz, L (or R) to 133'75kHz deviation, and pilot signal to x7.1kHz devia- tion. 25. Adjust VR4 to reduce crosstalk between L and R channels to a minimum. 20 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com Crystal Detector o Set the FM MUTING OFF switch to the OFF position. 26. Set the FM SG output to 98MHz and 60dB (unmodulated), and tune the SX-3900 to this position (fine adjust the tuning knob to ensure a DC 0V reading between no.S and no.7 ter- minals of the tuner assembly). 27. Rotate the B core of T201 to obtain a reading of DC 0V (within r30mV) between terminal no.9 and ground. 28. Set the FM SG modulation to 40OHz,x7lkHz deviation. 29. Rotate the A core of T201 to minimize AC signal level between no.9 and ground. @rr ?,)-, vR2 L2 @ To TAPE REC terminal Fig. 8 2 Adjustment of the tuning coils sx-3900 Distortion meter MPX signal generator l@++-A T 2 t ^ ] l l_9-D TC4 TC3 TC2 Tuner assembly s--8 0--7 A I f f i t rh ffi ffi r- |:I AC voltmeter Oscilloscope F M s i g n a l g e n e r a t o r To FM A N T E N N A 300S2 terminals Fig. 8 3 FM tuner adjustment I N ( E X T . M O D ) www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com Frequency Display Circuit o The counter IC (PD5009) has been designed to match FM ceramic filter IF offset (caused by displacement of the central frequency) by combination of the inputs (of H or L level) applied to pin nos.3 & 4. The matching IF offset in the SX-3900 is determined according to the combinations of connections and disconnections between the JP14 and JP15 jumper wires in the equalizer assembly (AWM-226). Check that the combinations shown in the table below have been followed for the corresponding grades of FM ceramic filters F1-F3 (5 ranks - color coded). If the SX-3900 frequency display reads 97.95MHz or 98.05MH2 when a 98.00MH2 signal is applied to the receiver, adjust TC1 so that the display reads 98.00MH2 correctly. If an accurate 98.00MH2 input signal source is not available, tune the receiver to the nearest known broadcasting station in the 98MHz re- gion, and check that the station's frequency is correctly displayed, adjusting TC1 if necessary. L=OV FM ceramic f ilters ( F 1 - F 3 ) PD5009 AWM-226 Pin no.3 Pin no.4 J P 1 4 J P 1 5 Red B l u e G ray O range B rown ; H H H H H L L H Cut Cut Connecl Connect Cut Co Cu Cu C u Cu 1 nect T;rl B -rn I Indicator assembly JP _/ .T_T :\ JP E q u a l i z e r assembly @ @ o o g AD @ Fig. 8-4 Adjustment of frequency display www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com AM Tuner o Connect the AM SG (AM signal generator) to the AM ANTENNA terminal via 1kQ resistor' o Switch the FUNCTION selector to the AM posi- tion. 1. Set the SX-3900 dial pointer to 600kHz, and the AM SG output to 600kHz, 100d8 (modula- tion 400H2,3O%). 2. Adjust the core of T3 to maximum demodu- lated output (at TAPE REC terminal). 3. Then set to 1400kH2, and set the AM SG out- put frequency to 1400kHz also. 4. This time adjust TC6 to obtain maximum demodulated output (at TAPE REC terminal). 5. Set the SX-3900 dial pointer to 600kHz, and the AM SG output to 600kHz, 30d8. 6. Adjust the core of T3 to maximum demodu- Iated output (at TAPE REC terminal). 7. Then set to 1400kH2, and set the AM SG out- put frequency to 1400kH2. six-39ocl 8. Adjust TC6 to obtain maximum demodulated output (at TAPE REC terminal). 9. Repeat steps 5 to 8 above. l-0. Set the SX-3900 dial pointer to 600kHz, and the AM SG output frequency to 600kHz. 11. Slide the bar-antenna coil along the core to find the position which gives maximum demo- dulated output (at TAPE REC terminal). 12. Tune to 1400kH2, and set the AM SG output frequency to 1400kH2. 13. Adjust TC5 to obtain maximum demodulated output (at TAPE REC terminal). 14. Repeat steps 10 to 13 as above. 15. Tune to 600kHz, and set the AM SG output frequency to 60OkHz. 16. Adjust T4 and F7 to obtain maximum demo- dulated output (at TAPE REC terminal). Bar-anten na To TAPE term inal To AM ANTENNA 1kf) resistor terminal Oscilloscope AC voltmeter AM signal generator Fig. 8-5 AM tuner adjustment www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com i^...\ 2sK168 - ^ I'] "**=-S "0" "" Jl\-I'l Lo,No \rfll ., .",,n"ffi 'oss ull/ / !\ Lot No hrr 333#3f zsc177sA 2SA905 2SC 91 5 Lor No- C) --..Jri---fl l$ ++l ryoe No hre ;iiJ i / | \ \ il|\ E L l l l c u 2sA912 E 2SC1 885 2SK34 ..,*"-K) I I D! l_r"o. ", 'o"-]$Jo/ / il\ d l J \ \ - D 3SK73 PA3007-A ? -A(ll n '% \r^'. \qil,,. \ x${a''rl -FsZ H A 1 1 9 7 HAl 201 0 "Aruln+A fi{+{il++ilfl +{ HAl 201 NJM4558DV 5 a .nj44 IIJII\J|// PA4006-A H412017P Q$" PD5009 ,Lot No 'Lot No Loi No -t oss Type No Lot No a2 9. SCHEMATIC DIAGRAM External Appearance of Transistors and lCs 2SA726S 2SA979 2SA985A N ,rO.""Nl t * \ t I r,,.-\ffpf r-ot 'o il\/t'l ; ! u 2sAe78 ,i"rr* 2SA1100 25C2575 F.- ) r-ot no-_{$l I i lLL-l-l-rYPe No ^*-)\P il il\ a q l l c u 2sA7so E 2SC1400 2SA1076 25C2526 A- t'0"*-{i_\ "'*>ffi$.-'. B u l l 2SC461 2SC535 c--- rype No F\m _ Lot No I a t r ' ^.. ->f;i"/ iJ ll \\ l] ll\ B U \ \ c u zSC1384 f.- -l n"..--ltn]-l .o, "o---tl$J--t'0. *o }K / il\ E U I I C U 2SD313P Nr f nr\ <^s 6 Dot *r\ \ll l*\\4/rYe" N" "-_'-,-'rs N I }|iPl-t---.o, "o il \iU u il tl B v t l TA7318P e Type No - Type No\ M54451P 2S8682 2SC1 906 Type No- Lot No I ) - L o t N o 2SA9o4A 2SC1914,A 5ut,r h\ ) r-"t r'r" --ld lf l I lN tffi Type No r,*''----\Ul l/ ii IHr /i il\\ l / l t \ \ a u l l c l l 24 2SD313 N rC\Yl ,ro"^o_ft\yl n,rfiffpl--rot.,o il\/tl sltl JiiniJ[,J], rM#+++# H t 4 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com w w w . x i a o y u 1 6 3 . c o m Q Q 3 7 6 3 1 5 1 5 0 9 9 2 8 9 4 2 9 8 T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com w w w . x i a o y u 1 6 3 . c o m Q Q 3 7 6 3 1 5 1 5 0 9 9 2 8 9 4 2 9 8 T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com w w w . x i a o y u 1 6 3 . c o m Q Q 3 7 6 3 1 5 1 5 0 9 9 2 8 9 4 2 9 8 T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 11. PARTS LIST NO?ES: c W'hen ordering resrslors, first conuert resistance ualues into code form as shown in the follo w ing e xamples. Ex. 1 \Yhen there ere 2 effectiue digits (any digit apart from 0), such as 560 ohm and'17k ohm (tolerance is shown by J = 5%, and K: 10o/"). 560a , 1 7 ksL , 5 6 x 1 0 ' 5 6 1 . . . . 4 7 x L U ' 4 7 3 . . . . RDt/aPS tr6nJ . RDI/nPS AABJ . R N 2 H O E t r K nslP OEO 1{ (such as in high precision metal filnt resis RNI/aSR tr6trtrr the importance of the sure to use parts of Part No. 0 5 ' 2 0 R 5 . . 0 1 0 1 r ) Ex. 2 When there are 3 effectiue digits tors). 5 . 6 2 k s t 5 6 2 x 1 0 ' 562 I o I'he L marh found on some componenl parts indicates safety factor of the part. Therefore, when replacing, be id e n t ic a I d e signa t ion. Miscellaneous Parts SEMICONDUCTORS Part No. Symbol & Description Symbol & Description I nrr-ros r'i. AEK-1 o2 A ne r-roo LAMPS Part No. GWG-140 GWS-221 AWH-097 A W R . 2 1 O GW5-222 GWS-223 GWK.146 A W R . 2 1 1 O T H E R S Part No. F U l 1 O A FU 2 2.54 F U 3 , F U 4 1 A Symbol & Description Tone ampl if ier assembly Switch assembly Power amplif ier assembly Power supply assembly Speakers terminal assembly Switch assembly Headphones jack assembly Rectifier assembly Symbol & Description 25C2526 2SA1 076 FUSES Part No. o1 -o4 o5-08 Svmbol & Description PLl-PL3 Lamp (wedge type) PL4, PL5, PL7, PL8 Lamp with wires PL6 Lamp with wires PL9. PL10 Lamp with wires Lamp with wires Lamp with wires Symbol & Description .41 ncc-oot i\ 4rr-676 1, ntt-ozs ATB-624 A nrp-o+r i\ noc-ozs AKB-076 A K H - O 1 O AKK-O05 AKM.OO4 caMA 224K 250 Parts List of Tuner CAPACITORS Part No. ACK-034 ACM-OO6 CCDCH OTOD 50 ccDcH 010c 50 ccDcH 040c 50 ccDcH 120J 50 ccDCH 150J 50 AC socket (AC OUTLETS) AC power cord T e r m i n a l ( A M S T E R E O O U T ) Transistor soc ket Lamp socket Jumper plug c2, c3 Assembly (GWE-132) Symbol I Description Ceramic capacitor 0.01 /250V Power transformer Power transformer Bar-antenna assemblv Tuning capacitor Ceramic trimmer C 1 T 1 T2 T3 A E L-029 A E L-069 A E L-095 AEL.O47 AE 1.075 AE L-065 SWITCHES Part No. P L 1 1 PLl2 f, nsr-soz ASX.1 28 A S X . 1 3 1 P.C. BOARD ASSEMBLIES Part No. s 1 7 Lever (POWER) Remote lever (ADAPTOR, DUPLICATE) Remote lever (TAPE MONITOR) Symbol & Description G W E . 1 3 2 GWS-220 GWX-463 AWV.OOS AWM-226 Tuner assembly Switch assembly Detector assembly Indicator assembly Equalizer assembly V C TC1 c50 c l 6 cl4 c 1 1 w z l 35 www. xiaoyu163. com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com Part No. Symbol & Description Part No. Symbol & Description ccDcH 330J 50 C C D C H 1 0 1 J 5 0 A C G - 0 1 8 CCDLH OSOD 50 CCDRH 15OJ 50 CCDUJ 12OJ 50 CCDXL OBOD 50 CCDSL 39OJ 50 c c D S L 1 0 1 J 5 0 C C D S L 1 5 1 J 5 0 C K D Y B 1 O 2 K 5 0 CKDYB 122K50 CKDYF 1032 50 CKDYF 4]32 50 CGB R68K 5OO C G B R 9 1 J 5 O O ( C G B R 9 1 K 5 O O ) corvlA 153K 50 COMA 473K 50 C O S H 3 3 1 J 5 0 cosH 751J 50 cosH 1 52J 50 C E A N L R 2 2 M 5 0 CEANL O1!M 50 C E A N L 4 R 7 M 5 0 C E A O l O M s O L C E A 3 R 3 M 5 0 L C E A 4 R 7 M s O L C E A l O O M s O L CEA 22AM 25L C E A 4 7 O M 1 O L C E A 1 0 1 M 1 O L C E A 1 O 1 M 2 5 L C E A 2 2 1 M 1 6 1 C E A 3 3 1 M 1 O L C E A 4 7 1 M 1 6 L CEA 47OM 25L Note RESISTORS Part No. c92-048 c92-O49 ACP-056 ACP-0s5 A C T - 1 3 3 ACW-304 R D % P M ! ! ! J 1\ Rozevr rrr L RN%PO D!D! F RN%SO !!!N F SEMICONDUCTORS Part No. R 1 - R 1 1 , R 1 3 , R 1 5 - R 2 2 , R 2 4 - R 2 9 , R31-R45, R47-R49, R52-R63, R65, R 6 7 , R 7 0 - R 1 2 3 , R 1 2 5 , R 1 2 8 - R 1 5 2 R 1 2 , R 4 6 , R 1 2 6 R 5 0 , R 5 1 R30 Symbol & Description c1, c8, c1 0 c89 c75 c24, C49 c34, C35 c15, c67, C68, C82, C91 c99 c2, c5, c6, c13, c22, c23, C25, C32, c38, C41, C42, C44, C45, C81, C86, c87, C90, C92-C95, Cl 0i, Cl 07 c26-C29, C31, C37, C39, C40, c46-C48, C74, C96, Cl 00, c104-c1 06, c1 08 c 1 8 c9 c102 c88 c55, C57 c59, C60 c1 03 c63, C64, C70,CtI c65, C66 c61, C62, Ct2 c79. C98 c91 c33, C43. C56, C69, C85 c73 c80 c30, c76, c71 c36, C83, C84 L t z c54 c51, C85 C3, C4, C78 When ordering resistors, conuert the resistance ualue itto code form, and then rewrite the part no. as before. Symbol & Description c20 c52 c 1 9 c11 Ceramic 390p/50V 3SK73 2SK34 2SK 1 68 2SC1 906 2SC535-A H A 1 2 0 1 NJM4558DV PA3007-A P44006-A H A 1 1 9 7 2SC1 91 9 25C2515 (2SC945A) 2SA1 1 00 (2SA733A) H A 1 2 0 1 0 MZ.061 (wz-061) t J t 3 3 3 11s24731 1SV69-03 C O I L S A N D F I L T E R S Part No, o 1 02 03, 01 5 Q4 o5 06, 07, 09 o8 0 1 0 0 1 1 412 0 1 3 014, 016-021 ,a24-416 o22, o23, o28-o35 o2l D 1 , D 2 D 3 , D s - D 1 7 D 1 8 Symbol & Description r24-O28 ATC-097 ATC-099 Arc-o72 ATE-OO8 ATE-045 ATB.063 ATB-069 A T F - 1 0 4 " L4, L7, L9-L13, Ll5, 116 L2 L5, L6 L8 Choke coil FM antenna coil F M R F c o i l FM osc. coil T 1 F M I F T T2 FM DET T3 AM osc. coil f4 AM lF coil F 1-F3 FM ceramic f ilter V R 1 , V R 3 V R 2 V R 4 V R 5 V R 6 V R 7 Semi-fixed (47k-B) Semi-fixed (10k-B) Semi-fixed (22k-B) Semi-f ixed (6. 8k-B) V a r i a b l e ( B A L A N C E ) V a r i a b l e ( V O L U M E ) The FM ceramic filters (ATF-104, symbol nos.Fl- F3) in the tuner assemblv (GWE-1 32) has been selected on the basis of their respective lF offset values (the degree of displacement from the center lF). Filters are graded into 5 ranks, these being identified by color coding at the top (red, orange, gray, blue, and brown). When replacing filters, always use filters of the same color code. When placing orders for these filters, designate the grade (color) as well as the part no. 36 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com sx-39clcl Part No, Symbol & Description SEMICONDUCTORS Part No. Symbol & Description FM low pass filter AM ceramic f ilter A M l F f i l t e r ATF-073 A T F -1 0 5 ATF-038 S W I T C H E S Part No. F 4, F5 F 6 F 7 HA120i7P SWITCHES Part No. Svmbol & Description ASX.1 33 ASX-1 34 ASX-1 3O ASK.152 OTHERS Part No. Symbol & Description S1 Remote slide (TAPE yIONITOR) 52 Remote slide (DUPLICATE) 53 Remote slide (ADAPTOR) 54. S5 Lever i|VODE, MUTING) Symbol & Description ASK-1 52 51 ASE.1 25 52 A S E - 1 2 6 5 3 Parts List of Switch Assembly SWITCHES Part No. Symbol & Description Lever (TON E) Slide rotary (200/400) Slide rotary l2Kl4Kl (GWS-221) AKA-O,I 3 AKB-063 Parts List of Switch Part No. Terminal (ANTENNA) Terminal (TAPE, ADAPTOR) Assembly (GWS-220) Symbol & Description ASG-229 ASG-229 ASG-230 S4 J O P u s h ( F I L T E R ) P u s h ( F M M U T I N G O F F ) P u s h ( B R I G H T / D l M ) ASG-230 R D T a P M D ! ! J coMA 473K 50 C C D S L 1 5 1 J 5 0 56 Push switch (LOUDNESS) R301 -R306 c301, c302 c303, c304 Parts List of Power Amplifier Assembly (AWH-097) CAPACITORS Part No. Symbol & Description Parts List of Tone Amplifier Assembly (GWG-140) CAPACITORS Part No. Symbol & Description c c D S L 1 0 1 K 5 0 ccDSL 470K 50 ccDSL 471 K 50 coMA 332J 50 COMA 123J 50 coMA 124J 50 CEANL R33M 50 C E A N L O l O M 5 0 C E A N L l O O M 5 0 C E A N L O R l M 5 0 CEA 47OM 25L CEA 47OM 5OL C E A l O i M 1 O L C E A N L 4 R 7 M 5 0 Note: RESISTORS Part No. c5, c6, c1 1 , C12 C3, C4 c 1 3 , C 1 4 a l l r 1 a c23, C24, C27, C28 c25, C26, C29, C30 c15, C16, C19, C20 c17, C18, C21,C22, C33, C34 c35, C36 c37, C38 c9, c10 c39-C42 C7, C8 c1, c2 When ordering resistors, conuert the resistance ualue into code form, and then rewrite the part no. as before. Symbol & Description C E A N L 4 R 7 M 5 0 CCDSL 221 K 50 CCDSL 47OK 50 ccDSL 470J 50 ccDSL 390K 50 coMA 332K 250 I c c o s r 1 0 1 K s o o CEANP B22M 50 ACG-009 CKDYB 472K 50 coMA 823K 50 C E A 4 7 1 M 6 L C E A 1 0 1 M 2 5 L Note: R E S I S T O R S Part No. ACP-035 ACP.O19 ACP-302 RD%PM IlA J c 1 0 1 , c 1 0 2 c1 03, c1 04 c1 05-c1 08 c 1 0 9 , c 1 1 0 c l 1 1 , C 1 1 2 c l 1 3 , C l 1 4 c 1 2 1 , C 1 2 2 , C 1 2 1 , C 1 2 A c1 29, C1 30 C131-C134 Ceramic 0.0471150V c 1 3 5 , C 1 3 6 c 1 3 7 , C l 3 8 c 1 3 9 c 1 4 0 When ordering resistors, conuert the resistance ualue into code form, and then rewrite the part no. as before. Symbol & Description VR1, VR2 Semi-fixed (330k-B) VR3, VR4 Semi-f ixed (100-B) VR5, VR6 Semi-fixed (100k-B) R 1 0 1 - R 1 0 8 , R 1 1 1 , R l 1 2 , R 1 1 5 , R 1 1 6 , R 1 1 9 , R 1 2 0 . F j 2 5 , R 1 2 6 , R 1 4 5 , R 1 4 6 , R 1 4 9 - R 1 5 2 , R 1 5 7 , R 1 5 8 , R 1 6 7- R 1 7 0 , R 1 7 5 - R 1 8 2 , R 1 9 1 - R 1 9 4 , R 1 9 7, R 1 9 9 ACT-134 RD%PM !D! J V R 1 , V R 2 V a r i a b l e ( B A S S , T R E B L E ) R3-R40, R43,R44 37 www. xiaoyu163. com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com Part No, Symbol & Description R 1 0 9 , R 1 1 0 , R 1 1 3 , R 1 1 4 , R 1 1 7 , R 1 1 8 , R123, R124, R|27-R142, Rl47 , R148, R1 53-R1 56, R 1 59-R1 64, Rlt 1 -R17 4 R121 , R122, R143, R144 R 1 9 6 R 1 8 7 , R 1 8 8 R 1 8 9 , R 1 9 0 R183-R186 Wire wound (twin) O.4l l5W x 2 Symbol & Description Parts List of Indicator Assembly (AWV-008) CAPACITORS Part No. Symbol & Description RDTaPMF !!! J RSlP !tr! J R D % P S I N I J a R N l H ! ! t ] K I nszn rn! K A ncru-t t+ SEMICONDUCTORS Part No. ACM-010 COMA 473J 50 C E A N L O l O M 5 0 C E A N L 4 R 7 M 5 0 coMA 332J 50 C E A 4 7 O M 1 6 L C E A 1 O 1 M 2 5 L CKDYF 1032 50 CKDYX 473M25 C E A 4 7 1 M l O L ccDcH 101 K 50 ccDcH 020c 50 CKDYF 473250 c c D S L 1 0 1 K 5 0 C E A 2 2 1 M 1 6 L C E A O l O M s O L Note: R E S I S T O R S Part No. TCl C3, C4 c5, c6 c7, c8 c9 c 1 0 Ceramic trimmer c12, c1 4, c17 -c21 , c28 c13, c15, c25-c27, C29, C30 c1 6, C32 c24 c31 c34, C36 L J 3 c31-c43 When ordering resistors, conuert the resistance ualue into code form, and then rewrite the part no. as before. Symbol & Description 2SC1 775A-E* or 2SC1 775A-F" 2SA979-F * or 2SA979-G* " h f e o f 0 1 0 1 a n d O 1 0 2 O1 04 have the F-rank. *hfe of O101 and O102 should have the F-rank 0104 have the G-rank. 0 1 0 1 , 0 1 0 2 0103, 0104 should have the E-rank, i1 it 0105, 0106 0107, o108 o 1 0 9 , o 1 1 0 o 1 1 1 , 0 1 1 2 , 0 1 1 7 , 4 1 1 8 01 13, 01 14,0119,0120 0 1 1 5 , o 1 1 6 0 1 2 1 , 4 1 2 2 a123,4124 a125, 0126, o',l 37-o139 0 1 3 3 , o 1 3 4 o 1 3 5 , o 1 3 6 o140 D 1 0 1 - D 1 0 6 D 1 0 9 , D 1 1 0 D 1 1 1 , D 1 1 2 , D 1 1 7 , D 1 1 8 D 1 1 3 - D 1 1 6 D129, D130, D132, D133 D 1 3 1 T h 1 0 1 . T h 1 0 2 Symbol & Description O 1 0 3 a n d 0 1 0 3 a n d 25C2291 2SA750 (2SA7265) raal ol tr 2SA750 2SC1 400 2SA905 2SA904A 2SC1 91 44 25C2575 25C2275A-o** or 25C2215A-P'* 2SA985A-O** or 2SA985A-P"* ACP-OO7 RD%PIVI l!tr J S E M I C O N D U C T O R S Part No. V R 1 , V R 2 S e m i - f i x e d R 1 - R 3 3 . R 3 5 - R 6 3 Symbol & Description **hfe of O133-0136 should have the same value. T47318P-A H A 1 2 0 1 0 M 5 4 4 5 1 P PD5009 (2SC945A) 2SC461-B 2-1K261 OTHERS Part No, o 1 02, 03 o4 u c 06-010 0 1 1 D 1 - D 4 Symbol & Description 2SC1 384 MZ-061 (wz-061) STV2H 10E2 1 S1 555 ( 1 52076) 15247 1 M Z - 1 5 0 (wz-150) TH 1 03-2 OTHERS Part No. r24-O28 AAV-OO7 AAV.OOS ASS-01 1 VCZ3OPOSOFMC L 1 , L 2 V 1 v2 X 1 Choke coil F luorescent indicator tube F luorescent indicator tube Crystal resonator Parts List of Equalizer Assembly (AWM-226) CAPACITORS Part No Symbol & Description ASR.068 PBZ3OPO6OFMC C E A N L 4 R 7 M 5 0 CEA 47OM 50L c3, c4, c29, C30 v t , v z , w t l , u t o 3A R L 1 R e l a y www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com Part No. C E A 4 7 O M 1 O L C E A 4 7 1 M 6 L CEA 22OM sOL CCDSL 22OK 50 c c D S L 1 8 1 K 5 0 ccDsL 221 K 50 coMA 683K 50 coPA i22G 50 coPA 183G 50 COPA 683G 50 C K D Y F 1 O 3 Z 5 0 CKDYF 4132 50 Note: RESISTORS Part No. Symbol & Description c1 9, C20 c9, c1 0 c25-C28 c23, C24 c7, c8 C5, C6 c21, C22 c 1 5 , C 1 6 c 1 3 , C 1 4 c11 , C12 c31 w J z When ordering resistors, conuert the resistance ualue into code form, and then rewrite the part no. as before. Symbol & Description Part No. six-39clcl Symbol & Description c22 UO c20, c21 c l 5 c3. c4 When ordering resistors, conuert the resistance ualue into code form, and then rewrite the part no. as before. Symbol & Description C E A 3 3 1 M 2 5 1 CEA lOOM 63L C E A 4 7 1 M 1 6 L C E A 1 O 2 M 3 5 L C E A 2 2 1 M 8 O L Note RESISTORS Part No. R S l P ! D ! J R D % P S N l N J A nozpsr rrr .r Anozpvr rrl L RD%PM !!D J SEMICONDUCTORS Part No. R 3 , R 1 6 , R 1 7 R 1 1 , R 1 2 R23, R24 B4-R7 R1,R2, R8-R10, R13-R15, R18-R22, R25,R26,R27 Symbol & Description RD%PM NItr J RN%PO ll!tr F RS2P DlD J SEMICONDUCTORS Part No. R 1 - R 1 2 , R 1 5 , R 1 6 , R 2 1 - R 4 6 R 1 3 , R 1 4 , R 1 7 - R 2 0 R47 Symbol & Description 2SA978 2SC17l5A 2SC 1 885 254912 1 S1 555 ( 1 52076) OTHERS Part No. 01, 02 03, 04 05, 06 07, 08 D 1 , D 2 Symbol & Description 2SK34 25D31 3P 2SC1 885 254912 2S8682 (258507) 2SC1 91 5 2SA905 2SD31 3 25C2575 1 Cl trRtr ( 1 52076) A roez K Z L - 1 4 0 MZ-110 ( w z - 1 1 0 ) M Z - 1 3 0 ( w z - 1 3 0 ) M Z - 1 7 7 ( w z - 1 7 7 1 O T H E R S Part No. 0 1 , 0 2 U J a4 uc vo o7 o8 09, o1 1 0 1 0 D l , D 1 1 D2-D5, D7-D1 0 D6 D 1 4 D 1 3 D12 ADU -ZZti AKB-064 AKB.063 t N ) Parts List of Power Supply Assembly (AWR-210) CAPACITORS Part No. Symbol & Description 51 s-gang push switch T e r m i n a l ( I N P U T ) Terminal (PBE Al\4P OUT/POWER AMP C2, C14, C18, C19 Ceramic C7, C8 c5, c24 c l ao c 1 6 c12, C13 c 1 0 , c 1 1 a a a cl7 0.0 1 / 1 5 0 v T1 Heater transformer Symbol & Description f, nrr-ozs PBZ3OP060FMC V BZ30PO6OFMC ACG-O04 C C D S L 1 0 1 K 5 0 C E A l O O M 5 0 L CEA 2R2M sOL C E A 4 7 O M 2 5 L C E A 1 O 1 M 2 5 L CEA 47OM 50L C E A 4 7 O M 6 3 1 C E A 4 7 1 M 6 L C E A 2 2 1 M 1 6 1 Parts List of Detector Assembly (GWX-463) CAPACITORS Part No. Symbol & Description c c D S L 1 0 1 J 5 0 ccDWK 150K 50 C K D Y B 4 ] 1 K 5 0 CKDYF 1032 50 c201 c202 c204 c206 39 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com Note When ordering resistors, conuert the resistance ualue into code form, and then rewrite the part no. as before. Symbol & Description R201 -R208 Parts List of Rectifier Assembly (AWR-211) CAPACITORS Part No. Symbol & DescriPtion RESISTORS Part No. RD%PM !N! J SEMICONDUCTORS Part No. Symbol & DescriPtion ACG-004 A C H - 2 1 0 A ncc-otz RESISTORS Part No. I ncru-oto A ncru-ozg SEMICONDUCTORS Part No. Ceramic 0.01/150V Electrolytic 15000/71V Ceramic 0.01/125V Wire wound 3.3/20W Carbon composition 12.2Mly,wl v t , v z c3, c4 Lf, Note: When ordering resistors, conuert the resistance ualue into code form, and then rewrite the part no. as before. Symbol & Descriptiol__ =--- 2SC461 -B 2-1K261 O T H E R S Part No, o201 D201, D202 R 1 R 2 Symbol & DescriPtion ATE.O50 ASS-012* r201 X 1 F M D E T Crystal resonator Red (blue or orange also permissible) Blue (or brown) Orange (or gray) Symbol & Description o The crvstal resonator (ASS-012, symbol no.X1) in the detector assemblv (GWX-463) is available in 3 different types correspond- ing to the lF offset values of the FM ceramic filters (ATF-I 04, svmbol nos.F1- F3) in the tuner assembly (GWE-1 32I. These mav be identified by the different colored dots (red, blue, orange) at the head. When replacing crystal resonators, check that the matching requirements listed in the following table are met. Crystal resonator (ASS-01 2) FM ceramic filter (ATF'104) A sstst A sststn OTHERS Part No. D 1 Svmbol & Description Rel ay F1 Temperature-sensitive fuse A nsn-oog Ar aex-oot ) Red Blue Orange Parts List of Speakers Terminal Assembly (GWS-222) Part No. Symbol & DescriPtion ') A nrr-osa ASX-1 37 Parts List of Switch Part No. Terminal (SPEAKERS) Remote slide switch Assembly (GWS-223) Symbol & Description A S X -1 3 5 Remote push switch Parts List of Headphones Jack Assembly (GWK-146) Part No. Symbol & Description AKN-O3O RS2P 331 J 40 R 1 , R 2 Phone.iack (PHONES) www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com sx-39clct 12. EXPLODED VIEW Exterior Components ,ngJ \-i,/ | I I l c l o NO?E'S: o Pa,rts without parl number cannot be supplied. o ,he [' mark found on some component parts indicates safe.ty factor of the part. Therefore,^rnn:, ,nin"ing, be sure designation. a ) 4 Key No. Part No. Description the importance of the to use parts of identical Key No. part No. Description 1. DCK40P150FZK 2. AMM_087 3. vBz30P080FMC 4. AN8_861 4-1. AAD-226 4-2. AAD-227 5. WA92F140U100 6. NK9OFUC 7. AAD-139 B. AAB-239 9. AAB-238 10. 444_065 Wooden cover assembly Front panel assembly Knob A Knob B Knob (for lever switch) Knob (BASS, TREBLE, T U R N O V E R , B A L A N C E } Knob (VOLUME) Knob (Tuning) 1 1 Food 12. vBz40POSoFMc 13. AEC-178 14. vrz4opl2oF^a toot assemblv 1 5. Bottom plate 7L ,,P :N l-\j\ www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com Interior ComPonents NO?ES: o Parts without part number cannot be supplied' . in" A mark found on some component parts indicates the importance of the s a f e t yf a ct o ro f thepart.Therefore,whenrepla c i n g , b e s u r e t o u s e p a r t s o f i d e n t i c a l designation. Part No. Description Key No. Part No. Description Key No. 1 . 2. 4. 7 . u. o 1 0 . 1 1 . 1 2 . i Q 14. 1 5 . l o . 1 7 . 1 8 . 1 9 . 20. 21. 22. 23. 24. 25. 26. 28. 29. 30. 3 1 . 32. 34. 36. J t . JO. 40. 41 ' 42. 43. A , t t 45. GWE.132 GWS-220 GWX.463 AWV-OO8 AWM.226 GWG.140 GWS-221 AWR-210 GW3-222 GWS.223 GWK.146 AWR-211 AXA-260 ASK.507 ASX-128 Tuner assemblY Switch assemblY Detector assemblY lndicator assemblY Equalizer assemblY Tone amplif ier assemblY Switch assemblY Power supplY assemblY Speakers terminal assemblY Switch assemblY Headphones jack assemblY Rectifier assemblY Fuse holder assembly Dial panel Dial pointer Shaft cover A Shaft cover B Side f rame L Side frame R Panel frame Center f rame Rear panel Center channel Tuner holder Heat sink holder Transformer holder Scale board holder L Scale board holder R EO holder A EO holder B Reinforced plate Ground plate Acrylic board Spacer A Spacer B Rod Pulley assembly Pulley assembly S Tuning drum assemblY Tuning shaft assembly SPring Reinforced channel Mounting clamp Lever switch (POWER) Remote switch A A A, 46. ASX-1 31 41 . 48. 49. 50. ACG-001 51. AKP-041 52. ADG-029 54. AK8-076 55. ATT-676 Remote switch Remote belt Remote belt Remote belt Ceramic capacitor AC socket (AC OUTLETS) AC power cord Terminal (GND) Terminal (AM STEREO OUT) Power transformer Bar-a ntenna Power trans{ormer Lamp (wedge tYPe) F u s e ( 1 A ) Fuse (2.5A) Fuse (10A) Lamp with wires Lamp with wires Lamp with wires Lamp with wires Strain relief Pl ate Lamp socket Jumper plug Smoother Ground terminal 2-P Lamp holder Capacitor cover Special screw lnternal toothed lock washer Union nut Nylon rivet /i, 56. ATA-624 I\ 57. 4rT-675 58. AE L-029 A sg. AEK-106 A oo. AEK-102 A or. AEK-305 62. AEL-069 63. AE L-O95 64. AE L-047 65. AE L-075 66. AEC-327 67. 68. AKK-005 69. AKM-004 70. 7 1 . 72. 73. 74. ABA-176 75. ABE-001 76. ABN-050 77. NKgOFUC 7a. wA92F140U100 79. wA35F100N080 80. AEC-525 81. BBT3OPOSOFZK 82. vBz30P060FMC 83. PMT3OPO6OFZK 84. MTZ3OPlOOFZK 85. vBz30P080FMC 86. PMZSOPOBOFMC 87. PMZ3OPO6OFMC 88. VBZ40P080FMC 89. PMZ3oP120FMC 90. AE L-065 42 Lamp with wires www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com w w w . x i a o y u 1 6 3 . c o m Q Q 3 7 6 3 1 5 1 5 0 9 9 2 8 9 4 2 9 8 T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com Heat Sink / \ fl 1 1 ,.'r NO?ES: t Parts without part number cannot be supplied. c The I mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. Key No. Part No. Description 1. VBZ3OPO6OFMC 2. 3. VMH3OP120FMC 4. 5. 25C2526 6. 2SA1076 7. AEC-488 8. AKH-010 9. 1 0 . 11. BBT3OPOSOFZK 12. 13. AWH-097 14. VBZ30P080FMC 1 5. STV2H 16. WA33F 100M100 Holder Socket stopper I nsulator wafer Transistor socket Heat sink PA holder A PA holder B Power amplif ier assembly www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 1 3. PACKING \...;w - --l \ i Parts List Key No. Part No. Description 1 . A R 8 - 3 5 4 2. ADH-002 3. AHA-247 4. AHC-042 5. AH D-756 6. AHA-251 Operating instructions T-type FM antenna Side pad Inside packing Packing case Rear pad 4 0 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com CD rrtoNEEFr INFORMATION SERVICE ( L / L ) m. 5I-484016 Date: l{ovsnber, 1983 PIONEER ELECTRONICS (USA INC. TECHNICIAL INFORMATICN CENTER P O S T C F t T C E B O X 1 7 8 0 L O N G B E A C H , C A L I F O R N I A 9 0 8 0 1 P H O N E : 2 i 3 1 4 2 0 - 5 7 0 0 F A X : ( 2 ' 1 3 ) 4 2 0 ' 5 9 0 2 Mooelr SX-J900/KU, S/G SUgJfCf ; Addition of resistors into Power Amp Assernbly. RgnSOru: For easier Idle current adjustment. R200, R201 : (Added) ---------)100rr RDl/4PM1OlJNL Srnvr cr lvlnruunt- PRe e : SX-3900 series ApplrcABLE SrRtRt No, : [ART-457] ------ 21, 55 SX- 39OO /KU sx-3900/s /c 3603601 - 290455L- (J-lrc) www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com C)rqoNEEn SFSs|OOS/G The basic performance of the S/G type is the same as the KU type. manual is applicable to the S/G type, please refer to the KU type service of this supplements. SPECIFICATIONS The specifications for S/G type is the same as the KU type except for fol- lowing sections; Miscellaneous Power Requirements . AC 1 1 0112012201240V (switchable) 50/60H2 P o w e r c o n s u m p t i o n . . " 3 1 0 w Weight (without package) . 21kg (46lb 5 oz) This additional service manual with exception www. xiaoyu163. com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com CONTRAST OF MISCELLANEOUS PARTS SEMICONDUCTORS FUSES LAMPS SWITCHES . The b marh found on some component parts indicates the importance of the safety"factor of the part. Therefore, when replacing, be sure to use parts of identical designation. Symbol Description Part No. Remarks KU type S/G type 01 -04 05-08 Tra nsi stor Tran s istor 25C2526 25A1 076 2 > V Z A Z O 2SA1 076 Symbol Description Part No. Remarks KU type S/G type J" FU1 , \ F U 2 ,\ rus ,i).FU4 F u s e ( 1 0 A ) F U S e t Z . C A ' F u s e ( 1 A ) F u s e ( 1 A ) Fuse (5A) AEK.305 A E K - 1 0 2 A E K . 1 0 6 AEK.106 A E K - l 1 O A E K - 1 0 2 A E K - 1 0 6 A E K - 1 0 6 A E K - 1 0 8 Symbol Description Part No. Remarks KU type S/G type P L 1 PL2 PL3 PL4 PL5 PL6 PLl PL8 PL9 P L l O P L 1 1 PLl2 Lamp (wedge tYPe) Lamp {wedge type) Lamp (wedge type) Lamp with wires Lamp with wires Lamp with wires Lamp with wires Lamp with wires Lamp with wires Lamp with wires Lamp with wires Lamp with wires AE L-029 AE L-029 AEL.O29 AE L-069 AEL.O69 AE L-095 A E L-069 AE L-069 A E L-047 AEL.O47 AE L-075 AE L-065 AE L-029 AEL-029 AE L-029 AE L.069 AE L-069 AEL.Og5 AE L.069 AEL-069 AE L-047 AEL-047 AE L-075 AE L-065 Symbol Description Part No. Remarks KU type S/G type Ast z t\ Lever (POWER) Remote lever (ADAPTOR, DUPLICATE) Remote lever (TAPE MONITOR) Line voltage selector ASK-507 ASX-128 A S X . 1 3 1 ASK.508 ASX-128 A S X - 1 3 1 AKX.063 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com j :i : P.C. BOARD ASSEMBLIES Symbol Description Part No. Remarks KU type S/G type Tuner assembly Switch assembly Detector assembly Indicator assembly Equalizer assembly Tone amplifier assembly Switch assembly Power amplifier assembly Power supply assembly Speakers terminal assembly Switch assembly Headphones jack assembly Rectif ier assembly De-emphasis assembly GWE-132 GWS-220 GWX.463 AWV-OO8 AWM-226 GWG.140 GWS-221 AWH-097 AWR-210 GWS-222 GWS-223 GWK.146 AWR.211 GWE-132 GWS-220 GWX-463 AWV-OO8 AWM-226 GWG.140 GWS.221 AWH-097 AWR.21O GWS-222 GWS-223 GWK-146 AWR.214 AWS-147 OTHERS Symbol Description Part No. Remarks KU type S/G type ac1 c2,c3 T1 T2 T3 A A Ceramic capacitor Power transJormer Power transformer Bar-a nten na AC socket (AC OUTLETS) AC power cord Terminal (AM STEREO OUT) Transistor socket Lamp socket Jumper plug ACG-001 coMA 224K 250 ATT.676 4TT.675 ATB.624 AKP-041 ADG-029 AKB-076 AKH.OlO AKK.OOS AKM-OO4 ACG-001 coMA 224K 250 ATT.682 4TT-681 ATB-624 AKP.O41 ADG-049 AKB.O76 AKH.OlO AKK-OOs AKM-OO4 PACKING Symbol Description Part No. Remarks KU type S/G type Packing case Inside packing Side pad Cardboard spacer Rear pad AHD-756 AHC-042 AHA-247 AHA-251 AHD-757 AHC-O42 AHA-247 AHB-089 AHA-251 FURNISHED PARTS Symbol Description Part No. Remarks KU type S/G type Operating instructions T type FM antenna ARB-354 ADH-OO2 ARB.356 ADH-OO2 www. xiaoyu163. com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com Rectifier Assembly (AWR-214) Fuse Holder Assembly (for S/G type) De-emphasis Assembly (AWS-I 47) 50 www. xiaoyu163. com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com Parts List of Rectif ier Assembly (AWR-214) CAPACITORS Part No. SYmbol & DescriPtion ACG-004 ACH-210 ACG-001 RESISTOR Part No. C1 , C2 Ceramic 0.01/150V C3, C4 Electrolytic 15000/71V C5 Ceramic 0.01/250V Note: When ordering resistors, conuert the resistance ualue into code form, and then rewrite the part no. as before. Symbol & DescriPtion Rl Wire wound 3.3/20W ACN-019 SEMICONDUCTORS Part No. Symbol & Oescription J J I C I b S t c t h OTHERS Part No. Symbol & DescriPtion ASR-069 RelaY AEX-0O1 F1 Temperature-sensitive fuse Parts List of De-emphasis Assembly (AWS-147) Part No. Symbol & Description cosH 751J 50 C1, C2 cosH 152J 50 c3, c4 D1 D2 A S H - 0 1 5 51 Slide switch 50 www. xiaoyu163. com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com w w w . x i a o y u 1 6 3 . c o m Q Q 3 7 6 3 1 5 1 5 0 9 9 2 8 9 4 2 9 8 T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com fr . il' :l: . , : ' i r PICINEEFI ELECTFTCINIC CCIFIPCIFIATICIN 4-1 , Mesurc 1-chorrie, Mesuno-ku. Tokyo 153, Japen U.!. FIC'NEEn ELECTFICtNIea CC'F|FigllATlClN E|5 Oxford OFive, Moonachie, New Jerlsy O7O74 U.S.A. FIC'NEEE ELECTFTCINIC IEUFICIPE N.\,. Luitl€gen-Haven I, POSO Antwerp, Belgium FfCINCEa ELECTRCIJ{ICa A|JaTF|ALIA FTY- L?E'. 178-184 Bounddny Road. ElFeeside. Victonia 3195, Auatnalia www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com