f f o' ll ,r*:(' EefvicecVlanual S T E R E O A M P L I F I E R S \-Ci,lO ()rrroruEErl' 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 This service manual is applicable to the KU type. CONTENTS I . S P E C I F I C A T | O N S . . . . . . . 3 2 . F R O N T P A N E L F A C I L I T I E S . . . . . 4 3 . D I S A S S E M B L Y . . . . 6 4 . P A R T S L O C A T I O N . . . . . . 6 5 . B L O C K D I A G R A M . . . . . . 8 6 . L E V E L D I A G R A M . . . . . . . 8 T . C T R C U I T D E S C R I P T I O N S . . . . . . ' 9 S . A D J U S T M E N T S . . . . . . 1 0 9 . E X P L O D E D V I E W S A N D P A R T S L I S T . . . . . . . 1 1 10. SCHEMATIC DIAGRAM, P.C. BOARD PATTERNS AND PARTS LIST 1 0 . 1 M i s c e l l a n e a ' . - . . ' . 1 4 10.2 Schematic Diagram 15 10.3 P.C. Board Connection Diagram 18 10.4 Parts List of P.C. Board Assembly 21 1 1 . P A C K I N G . . . . . . . 2 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 I 1. SPECIFICATIONS Semiconductors lCs Transistors 27 D i o d e s . . . . . . 1 8 Amplifier Section Continuous p0wer output of 45watts* per chan- nel, min., at 8ohms from 20Hertz to 20,000 Hertz with no more than 0.\3%total harmonic distortion. Total Harmonic Distortion (20 Hertz to 20,000 Hertz, I ohms, from AUX) 22.5 watts per channel'power output .No more than 0.02% Intermodulation Distortion (50 Hertz : 7,000 Hertz= 4 : 1 8 ohms, from AUX) continuous rated power output . . No more than 0.03% 22.5 watts per channel power output No more than O.O2% Damping Factor (2OHertz to 20.000 Hertz, S ohms) . . 50 I nput (Sensitivity/lmpedance) P H O N O . . . . 2 . 5 m V / 5 0 k i l o h m s TUNER 150mV/50 kilohms A U X . . . . . 1 5 0 m V / 5 0 k i l o h m s TAPE PLAY 1 ,2 . . 150mV/50 kilohms Phono Overload Level (T.H.D. O.O5o/o, 1.000H2) PHONO 130mV Output (Level) T A P E R E C l , 2 . . . . . 1 5 0 m V S p e a k e r . . . . A , B , O F F siA-ci1 cl Frequency Response PHONO (R IAA Equalization) TUNER, AUX, TAPE PLAY 20Hz to 20.000H210.3d8 1 . 2 . . 1OHz to 60,000H2 13dB Tone Control B A S S . . . t 1 0 d B ( 1 0 0 H 2 ) T R E B L E . . . . t 1 0 d B ( 1 0 , 0 0 0 H 2 ) Subsonic Filter . . 15Hz (-6dB/oct) Loudness Contour (Volume control set at -40dB position) . . . . +6dB (100H2), +3dB (10,000H2) Hum and Noise (lHF, short-circuited, A network) P H O N O . . . 8 2 d B T U N E R , A U X , T A P E P L A Y 1 , 2 . . , . . . I O O d B Miscellaneous Power Requirements AC 120V,60H2 P o w e r C o n s u m p t i o n . . . 1 0 0 W ( U L ) Dimensions . 42O(Wl x 94(H) x 347(D) mm 1 6 - 9 / 1 6 ( W ) x 3 - 1 1 l 1 6 ( H ) x 1 3 - 1 1 / 1 6 ( D ) i n Weight (without package) 6.9kg (15 lb 3oz) Furnished Parts O p e r a t i n g l n s t r u c t i o n s . . . . . . . . 1 NOTE: Specifications and the design subject to possible modifications without notice due to improvements. * Measured pursuant to the Federal Trade Commission,s Trade Regulation rule on Power Output Claims for Amplifiers. 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 Set this switch to ON to supply power to the amplifier. 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 on and off . @ SPCETER SELECTOR Use this selector to select the speaker system. OFF: Sound not obtained from speakers. A: Sound obtained from speakers connected to the A speaker terminals. B: Sound obtained from speakers connected to the B speaker terminals. @ BASS AND TREBLE CONTROLS Use these controls to adjust the bass and the treble. lf you set the tone switch to ON and turn the bass control to right from its center position, you will be able to emphasize the sound in the low-frequency range. Con- versely, turning the bass control to the left from the center position, you will attenuate the sound. You can use the treble control to adjust the sound in the high-frequency range. @ 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 ampl if ier's speaker terminals. @ FUNCTTON INDICATORS The TUNER, PHONO, TAPE, AUX function indicators light up in accordance with the position of the function se lector. @ FUNCTION SELECTOR Use this selector to select the program source. When set. the function indicator above the meter panel correspond- ing to the position of the function selector will light up. TUNER: Set here when listening to broadcasts on a tuner connected to the TUNER jacks. (The TUNER function indicator lights up.) PHONO: Set here when playing records on a turntable connected to the PHONO jacks. (The PHONO function indicator lights up.) TAPE 1: Set here when playing tapes on the tape deck connected to the TAPE 1 jacks. (The TAPE function indicator lights up.) AUX: Set here when listening to a program source which is connected to the AUX jacks. (The AUX function indicator lights up.) 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 I i O volurvrE coNTRoL Use this control to adjust the output level to the speakers and headphones. Turn it clockwise to increase the output level. No sound will be heard if you set it to ,,0.,' @ nCRopHoNE JAcK Plug the headphones into this jack when you want to listen through your stereo headphones. NOTE: Set the speaker selector to OFF when listening only with head- phones. €) suesoNtc FTLTER SWTTCH When this switch is set to the 'l 5Hz position, the subsonic filter with a cut-off frequency of 15Hz is actuated. The subsonic filter serves to attenuate frequencies lower than 15Hz in a 6dB/oct slope. lt is therefore effective in suppressing ultra-low-frequency noise which is generated by record warp and other causes. You cannot actually hear this noise but it is a factor in the generation of intermodulation distortion and it may damage your speaker system. Set this switch to the 1SHz position during record play for the best effect. @ rorue swtrcH Set this switch to ON when adjusting the bass and treble controls. When set to the upper (OFF) position, the tone control circuits are disengaged and frequency response is flat. This function is convenient for checking phono car- tridge and speaker tone quality and listening room acoustics. @ powen tNDtcAToR When the power switch is set to ON this lamp lights up, indicating the amplif ier is turned on. sA-Ci1cl @ LouolrrEss swtrcH When listening to a performance with the volume control turned down, set this switch to ON and the bass and treble will be accentuated. When the volume is low, the human ear finds it harder to hear the bass and treble than when the volume is high. The loudness switch is thus designed to compensate for this deficiency. By setting it to ON, the bass and treble come through much more strongly and the sound takes on a punch even when the volume control is turned down. @ rnpe 2 swrTcH Set this switch to the ON position when monitoring a tape performance on a tape deck which you have connected to the TAPE 2 jacks or when monitoring a recording. NOTE: Set the switch to the upper (OFF) position when tistening to records or broadcasts, etc. selected by the function selector. @ BalarucE coNTRoL Use this control to balance the volume of the left and right channels. 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. Conversely, 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 adjust. II f' rt- 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. DISASSEMBLY Bonnet Case Remove the four screws Front Panel Remove the four screws o. e. Bottom Plate Remove the six screws O. o The !i, marh found on some component parts indicates the importance of the safety factor of the part. There' fore, when replacing, be sure to use parts of identical designation. 4. PARTS LOCATION Front PanelView m (t .J!g!r.- Knob (BALANCEI AAB.223 Lever knob (LOUDNESS, TAPE 2) AAD.2OO \o..oo/o' Bonnet case Front panel 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 Front View with Front Panel Removed Variable resistor (BASS. TREBLE) ACT-127 I Lever switch (POWER] ASK.520 Headphones .jack AKN-023 Lever switch (SUBSONIC, TONE) ASK-1 71 Top View with Bonnet Removed j Power transformer ATT-667 Switch assembly GWS-215 Headphones assembly GWX460 Tone control assembly GWG-138 Rear Panel View Terminal {INPUT) AK8.064 Terminal (TAPE 1) AKB-063 '!'tlr ' rl|r 'l tu " I Variable resistor ( BA LANCE) ACT-130 -Lever switch (TAPE 2) siA-610 Fluorescent indicator tube AAV-O06 Slide rotary switch ( F U N C T I O N ) A S X - I 1 3 I o L:---Variable resistor (VOLUME) € A S K . 1 7 2 Lever switch ( LOUDN ESS) A S K - 1 7 1 AF amplifier assembly GWK.144 Switch assembly GWS-216 Volume assembly GWX459 I AC socker AKP.O32 1i Power code ADG-023 Strein reliel AEC-327 Terminal (SPEAKERS) AKE-051 f t-t sl ide rota ry r*i t"tr -------]-=---.' (SPEAKERS) I " : ASE-oo3 | ,, ll 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. BLOCK DIAGRAM swtrcHEs: st Fu&trox luxEP-M-raPEI-AUX 32 fAPE? ON - 6F t3 ouoi€ls ox - gll 54 Su6oirt(t5Hrl Ox - 6 55 SPEAXERS O'F-A-' s6 &s€R ox -!Il se ioilE or _lI! 6. LEVEL DIAGRAM l}.tlJ"roo't xeai pnone (eo) AUX /TUNER 15OmV 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 n 7. CIRCUIT DESCRIPTIONS Equalizer Amplifier The 54,-610 features a 3-stage direct-coupled equalizer amplifier for greater reduction of noise and distortion. Besides the use of an ultra low-noise transistor (25C26O2) in the first stage, the adoption of low impedance input resistance and equalizer circuit has contributed to an S/N ratio of at least 82dB (at 2.5mV input, IHF-A). Power Amplifier This all stage direct-coupled pure complemen- taly SEPP circuit features a current mirror load differential amplifier in the first stage, and incor- porates the tone control circuit in the NFB loop. Although the incorporation of the tone control circuits in the power amplifier stage reduces the number of elements that the signal has to pass through, and thereby further reduces noise, dis- tortion, and cost, the power stage does require a higher gain and a higher degtee of stability. In the SA-610, this high gain and high stability are achieved by a cunent mirror load differential amplifier in the first stage and by the use of a constant current circuit for the load of the pre- driver stage. Furthermore, the tendency for the pre-driver stage capacitance impedance load to cause deterioration in the high end frequency response is suppressed by inserting a capacitor (C) between the emitter of the pre-driver stage (Q2) and the base of the constant current circuit (Q1) as shown in Fig. 7-1. At frequencies where the reactance of this capacitor may be ignored, the push-pull action of Ql and Q2 serves to counteract the high end frequency response deterioration. The power amplifier stage is a complementary 2-stage' Darlington connection, resulting in an output power rating of 45W + 45W (8Q, 20Hz- 2OkHz\, harmonic distortion of less than O.O37o (20H2 20kHz at rated output), and output power bandwidth of 5Hz - 50kHz (0.O3% THD). Certainly a superb performance for an amplifier of this class is obtained. /. Constant current / circuit )to o,,u.,..r"n" \Pre-driver staga siA-61 cl Protection Circuit Besides protecting the speakers if a DC voltage should happen to appear at the power amplifier stage outputs, this circuit also mutes the signal path when the power switch is turned on and off (See Fig. 7-2). If for any reason a DC voltage (in excess of about tbV) should happen to appear in the output of the power amplifier stage, it is detected imme- diately by either Q23 or q24. qn is turned on by a positive voltage, and Q24 by a negative voltage. In either case, Q25 is also turned off, thereby opening the relay contact to disconnect the power amplifier stage from the speakers. , The muting action when the power switch is turned on is achieved by delaying the rise of the Q25 base potential by means of the R95/C77 time constant circuit. When the power switch is turned on, C77 is charged up via R95, thereby increasing the voltage across both ends of this capacitor. When this voltage exceeds the zener voltage of the D15 zener diode, Q25 is biased in the forward direction, and is thereby tumed on to close the relay contact. When the power switch is turned off., C77 discharges rapidly via D18, resulting in Q25 being turned off, thereby opening the relay contact. L C H S P O U T R CH SP OUT Fig. 7-2 Frotection circuit !f' r l I f, I i F Fig. 7-1 Pre-driver stage 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 IDLE CURRENT ADJUSTMENT 1. Set the SPEAKERS selector to the A position, and connect an 8Q resistor to the speaker out- put terminals. 2. Turn the VOLUME control down to minimum level, turn the power on, and wait about 10 minutes. 3. Connect a DC voltmeter to the TP terminals (Lch; TP4 and TP3, Rch; TP2 and TP1) of the AF Amplifier Assembly (GWK-144). 4. Check that the voltage between TP4 and TP3 (Lch) lies within the DC 4mV-50mV range then make a similar check for the Rch (between TP2 and TP1). If the voltage is less than 4mV, cut jumper wire A (Lch), and jumper wire B (Rch). If the voltage exceeds 70mV, check for circuit failure. 8.2 OUTPUT INDICATOR ADJUSTMENT 1. Set the TONE CONTROL to the center position. 2. Set the SPEAKERS selector to the A position, and connect an 8O resistor and AC voltmeter to the speaker output terminals. 3. Set the FUNCTION switch to the AUX position, and apply a 7kHz, 150mV signal to the AUX terminals. 4. Adjust the VOLUME control so that the voltage on the output terminals (SPEAKERS) read 9V (AC). 5. Adjust VR1 (Lch) and VR2 (Rch) of the in- dicator assembly so that the output power indicator read 10 watts. AF Amplifier Assembly (GWK-144) @ Jumper wire A Jumper --l @vR2 vR1 F.L Meter Assembly e Fig. 8-1 Adjustment point 1 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 sA-61 cl r 9. EXPLODED VIEWS AND PARTS LIST Exterior Component fa I f-' Parts List NOTE: c Parts without part number cannot be supplied. o The A 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 id.enti- cal designation. Key No. Part No. Description f, 1 . 2. 3 . 4. 5. 6 . 7 . 8. 9. 1 0 . ANE.269 ABA-079 AAD.2OO AN8.847 AAB.222 AAB.223 AAB.221 ABA-186 AB4-066 Bonnet case Screw Lever knob Front panel assembly Knob Knob Knob Screw Bottom plate Screw .4 .t4 ' - : ' \ 1;r 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 Component l K ' ?um ;l _^s- il Y'2o 44 29 30 32 34 - - 36,2ssl- ffu..Q N f - , ro '9;i,w 38 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 siA-cil o tt^ Parts List Key No. Part No. Description Key No. Part No. Description |'^x- l\ 1. 4rT-667 2. 3 . 4. GWS-215 A s. AsK-s2o A e. Acc-ool 7. GWX460 8. GWG-I38 9. AWV{07 1 0 . 1 1 . 12. GWS-216 13. GWX-459 14 . 15. AEL-320 16 . 1 7 . A rg. AKP-032 19 . Azo. ADG-o23 21 . AEC-327 22. AKE-O51 23. Azc. AEK-Ioo 25. GWK-I44 Power transformer Wire clip Frame Switch assembly Lever switch Capacitor Headphones assembly Tone control assembly F.L. assembly Cushion LED socket Switch assembly Volume assembly Cushion rubber LED Panel stay Heat sink AC socket Rear panel Power code Strein relief Terminal Terminal (GND) Fuse AF amplifier assembly 26. ASK-I71 27. ASK-172 28. ACT-130 29. AKB-063 30. AKB-064 3 1 . 32. AEC-672 33. ABA-107 34. 484-066 35. ABA-234 36. A84-026 37. M45-O86 38. 871-004 39. ABE-005 40. ABA-240 4't. ABA-198 42. 43. AEC-352 44. 45. AEC-488 46. 2SA1 108/A/O or R 47. 25C2588/A/Oor R 48. ABA-145 Lever switch Lever switch Variable resistor Terminal Terminal Frame Foot assembly Screw Screw Screw Screw 1 t spacer Nut 9@ Washer Screw Screw Remote wire Nylon rivet P.C.B. holder I nsulator spacer Transistor t hfe should have the Transistor J same rank Screw r- T, 1 3 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 1O. SCHEMATIC DIAGRAM.P.C.BOARD PATTERNS AND PARTS LIST 10.1 MISCELLANEA NOTE: c When ordering resistors,first conuert resistance ualues into code form as shown in the following examples. Ex. 1 When there are 2 effectiue digits (any digit apart from 0), such as 560 ohm and 47h ohm (tolerance is shown by J = SVo, and K = 10Vo). 5 6 O a - 5 6 x 1 0 t - 5 6 1 . . . R D V T P S E @ I i l J 4 7 h a - 4 7 x 1 0 3 - 4 7 3 . . . ' R D | / t P S A A B J 6 . S a - 1 R S . . _ . . . R N 2 H @ E E K t a - 0 1 0 . . . . . . 8 S r P @ [ 0 @ / ( Ex. 2 When there are 3 effective digits (such as in high precision metal film resistors). 5.62ha 562 x 10' 5621. . ' . RN7ISrB tr@gm ,F o The A mark found on sotne component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. Miscellaneous Parts ASSEMBLIES Part No. Symbol & Description GWK-144 AF amplifier assembly GWG-138 Tone control assembly GWS-215 Switch assembly GWS-216 Switch assembly GWX459 Volume assembly GWX460 Headphones assembly AWV-007 F.L. assembly SEMICONDUCTORS Part No. Symbol & Description OTHERS Part No. Symbol & Description A 4TT-667 T1 Power transformer 7\ ner-t oo F1 Fuse ASK-520 SB Lever switch (POWER) A nrpoez AC socket A nocozs ANB-847 A K E 4 5 1 Power code Front panel assembly Terminal (SPEAKERS) List of Changed Parts for Factory Modification List of changed parts information will be furnished when- 2sA1108/A/o 021,422\ ever necessary and you are requested to amend parts 2sc2s88/i;5 019, o2o I nte snoura have the same rank number in this parts list. o r R . j AEL.32O D1 LED CAPACITOR Part No. Symbol & Description A ACGOO1 C1 Capacitor 0.01/250V Symbol Part No. Description 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 1 3 A B 10.2 SCHEMATIC DIAGRAM l - - - o t o ' : o " t ' ' ( 1 / 2 ) G W - K - 1 4 4 f REc l s2:'�aPEz- [4Eg l:#i 'l i-iI";+ II |IIp-]]*_|..."::.F ':n I l_UI l-r' i t---1 @ I I I l'"::'�""-#"I $"il | Lry i "'o" I E--l I H'l "' lffil {.i''#,,ffif I t o o 4 7 / 2 5 r 3 l i 1 7 | | .AUX l J"'"1 i"*,'''rt5i illlF'-._' l:;; l 1\Jn*'ffii l-::: l{----l ::iHEi-Tf llll l _H ll .l'l llll---.-. 1 ffiNrRoLAss.v(2,2, I """-" i t*41+.t_|dr{::::,:^f{..",","u"1*,,oI | | Hl fd h | | l , J L-,=:i *HE-{ l^'- ftzzz l l r - Ll-- - r I I I I S W I T C H E S : s t , 7 : F U N C T I O N T U N E R - P H O N O - T A P E I - A U X S Z : T A p E ? O N - O F F 5 3 : L O U D N E S S O N - O F F 5 4 : S U B S O N I C ( 1 5 H z ) O N - O F F 5 5 : S P E A K E R S O F F - A - B 5 6 . P O W E R O N _ O F F 5 8 : T O N E O N - O F F The underlined indicates the switch position. c D 1 2 3 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 S W I T C H A s s ' y G W S - ? 1 5 l - - _ I -l R 5 l 2 . 2 k D 3 rs2075 c39 o.ot/ 500 - '-^ f c67 27p I i--T--i ; ??'?t I ---"J"-l F ttr-J 56 u'tt*' SB%,, 'o* l o.00r2 R ro l 6. 2 t c 6 8 2 7 o c t o t o k !*l'" l"F nea'6zr YFl,i., I _^.-J?rJ - - - d )L Ass'y (2/21 GWG -138 I 8 2 0 ( t / 2 w ) I a s E - o o 3 t- 2SC19r4A-G ol 82P ts2076 c6l roo,/so Q 2 H A r 2 0 t O *^^-J ,r.3i. R92 ilOk R52 R z O l g k R z Z t O C 4 8 az6 2scrass-R "ro A I orr cezso 0 l ( P O W E R ) A I C 5 8 4A - O.OllACtso T 2 A T T - 5 7 7 ot7 lt/zwl A rro oizso v r a A v - o o 6 AF AMP Ass'y (2/21 G W K - 1 4 4 AC POWER CORO a D G - o 2 3 A I cez' 6.ot t \ L _ _ _ a c r 2 5 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 7 8 9 .--- F - l . __1__fr_ I l l 3 i - 3 l ' . - . l L - J r* J "Jl L_j | *r------ ll l < # l l ] l l n t - - t t l l l _ - - l - - - - - - _l d%&; +48?q-E r l H l '/50 I +l { A t 2 0 t 0 =-----r iE fl rl, 'l flll= llm.l illl*llttl.l- islll'lll.l- Appearance 2SA912 2SC 1 885 O rvpe..-fl${ ) )a : u 2SA9 79 - rype""$ u"tru"-*ffii- il"o 4[L\ g_l I R ? I >'2k II - l i l !l l t i 2SA985 2SC 2275 trr"-"$ ^"7 of Transistors and f Cs 2 S C 1 8 1 5 A 2 S C 1 9 1 4 4 suffix===O ) ot No--B^ !ilf-rvpe No )-n'E h"-]1tt/ 've /l\ 2SC '' n lg 2SC 2602 ,^\ Lot No-S;a/ n*=-+*LfT-rvpe No flK s ! \ B 3r! 2SA 1 1 08A 2SC2588A Type *"-__N+\-\,\_\ n,.ffi ll lt (J- --Lot No s u l l u s 2SC 1 38; n"-$ii r-ot ruo-{Ul+-rvpe No m /!\ 2sc ,::r^ ? -- r'� p--.--LotNo rype ruo-{ t-hre )fr1=--c,.{{i, il il u surTrx IE U \ 2 S D 7 1 2 \ fr'"ru"-fu LotNoffin'.uu\i T A7'; ::ru \--===-J 7 8 I c D EiA-61cI 1 7 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 10.3 P.C. BOARD CONNECTION DIAGRAM FL Asr'y (AWV.007I Lch Rch HEADPHONE Arr'y (GWX460I SWITCH As'y (cws-216) 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 EtA-Ci1 cl HEADPHONE As'y (cwx460l VOLUME Arr'y (GWX459) 2s�A11o,AlA/ 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 l o ACl 20V 6OHz - t L - - - - - - _ - - _ J T 1 POWER TFIANSFORMER S W I T C H E O U N S W I T C H E O AF AMP Ar'y (GWK-1441 CONTROL Ar'y (GWG-I38) 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 siA-61 Cl 10.4 PARTS LIST OF P.C. BOARD ASSEMBLY Parts List of Amplifier Assembly (GWK-144) CAPACITORS Part No. Symbol & Description SEMICONDUCTORS Part No. Symbol & Description ccDsL 101J 50 CEA 1O2M sOL CEA 221M 35L C E A 1 O lM sO L C E A 1 0 1 M 3 5 L C E A 1 0 1 M 1 O L C E A 47 1 M 6 L CEA 47OM sOL C E A 22 1 M 1 O L C E A 4 TO M 1 O L CEANL OlOM 50 CEANL 2R2M 50 CEANL lOOM 16 CEANL R33M 50 CEANL R74M 50 ccDsl mrc 50 ccDSL 100K 500 ccDSL 220J 50 ccDSL 330J 50 ccDSL 470J 50 ccDsL 560J 50 ccDSL 820J 50 ccDSL 151K 500 CKDYF 1032 50 cKDYF 1032 500 coMA 473K 50 CKDYX 473M 25 coMA 122J 50 coMA 183J 50 coMA 563J 50 coMA 683J 50 ACG-017 ACG-004 ACH-215 Note: RESISTORS Part No. 25C2602 2SC1 91 9 2SC1 81 5 25A979 25C17754 2SA91 2 2SC1885 2SC 2275-0 2SA 985-O 2SC1 91 4A 2SC1384 25D712 1 S2076 ( 1 S1 555) 152473 STV3H 10F-2 (srBo1-02) GP-25D MZ-130 {wz-130} MZ-270 MZ-I92 lwz-l921 OTHERS Part No. 01, 02 03, 04 05, 06 07, 08 09, 010 01 I, 012 013, 014, 026 015, 016l hfe shoutdhavethe 01 7, 01 8 J same ran k o23,O24 o2s o27 Dl-D4, Dl8 D5, D6 D7, D8 D9, DlO D 1 1 - D 1 4 D l 5 D 1 6 D17 c't,c2 c54 c59 c60, c61, css c56,C77 c83, C84 c49 c51 c 1 8 , C 1 7 c33, C34 c71,c72 c25, C26 c3, c4 c75, C76 c19, C20 c37, C38 c41, C42 c 7,c8 c86, C87 c5, c6, c21-22,C29-C32 c15, C16, C27,C2A, C88, C85 c35, C36 c43-C46 c50 c39, C40 c47, C48 c78-C81 c11, C12 c9, cl0 c23, C24 c13, Cl4 c62 c58 c52, C53 When ordering resistors, convert the resistance ualue into code form, and then rewrite the part no, as before. Symbol & Description Symbol & Description ACT-130 ASK-1 71 ASK-172 ASX.I 15 Inrr-szz AKB.063 AK8-064 ASR-033 V R 1 s3, s4, s7 s2 s1 T2 Terminal Terminal Relay Variable resistor Lever switch Lever switch Remote slide switch Heater transformer RD!/r PMoDtrJ A noy. PMFoooJ RNTc POootrJ ARD% PsFotroJ RD% PSOOOJ A RS t poool A ncruozo R1-R8. R13, R14, R17, R18, R 2 1 - R50, R53, R54, R69, R70, R77-R79, R91-R93, R95, R105-R108 R19, R20, R51, R52, R55-R62. R73, R75, R103, Rl04 Bg-R12, R15, R16 R63, R64, R76, R80 R67, R68, R71,R72 R74, R94, R102 R65, R66 2 1 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 Parts List of Tone Control Assembly (GWG-I3b) Parts List of Switch Assembly (GWS-216) CAPACITORS Part No. Symbol & Description c63, C64 c65, C66 c67, C68 c69, C70 c73, C74 When ordering resistors, conuert the resistance ualue into code form, and then rewrite the part no. as before. Symbol & Description VR3. VR4 Variable resistor R81-R90, R101, R100 Assembly (cWS-215) Symbol & Description Part No. Symbol & Description ASX-1 |3 56 Slide rotary switch (FUNCTION) Parts List of Volume Assembly (GWX-4S9) Part No. Symbol & Description ACV-184 VR2 Variable resistor (VOLUME) Parts List of Headphones Assembly (GWX-460) Part No. Symbol & Description AKN-023 Headphones jack coMA 303J 50 coMA 124K 50 cosA 270K sO CQMA 122K 50 coMA 562K 50 Note: RESISTORS Part No. ACT-127 RDT4PMD tr qJ Parts List of Switch Part No. ASE.OO3 RS lP 3 3 1 J RDlzrPM 563J 55 Slide rotary switch (SPEAKERS) R96, R97 R98, R99 Description 11. PACKING Parts List Key No. Part No. 1 . 2 . 3 . ARB.351 AHD.754 AH4.239 Operating instructions Packing case Side pad 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 )a PICINEEFI ELECTFICINIC CCIFIPCIFIATICIN 4-1, Mesuno 1-chome, Mesuno-ku. Tokyo 'l 53, Japen U.a. FEIfVEEFI EI-ECTFICDNICE CCIFIPCIF|ATICIN E|5 Oxfond Dnive, Moon€chie, New Jereey O7O7\ U.S.A. FGIilCEFI eECTFlClillC (El.rFlCtFE N.\/. Luithagen-Heven 9,2O3O Antwe.p, Elelgium FCIwCEF El-CTFlCtI\llC|l A|J3TFIALIA FTY. LtEl. 17A-1A4 Eloundenv F|oad. Eltreeside. Victonia 3'l 95, Augtnelie (aRT'478€) E A i T - . a 7 q P F h t e d i n J e o a n 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