PIONEER CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS SERVICE INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A. PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936 C PIONEER CORPORATION 1999 K-ZZY. NOV. 1999 Printed in Japan ORDER NO. CRT2424 HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER KEH-1900�X1M/UC Service Manual CONTENTS 1. SAFETY INFORMATION............................................2 2. EXPLODED VIEWS AND PARTS LIST ......................2 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ....8 4. PCB CONNECTION DIAGRAM................................18 5. ELECTRICAL PARTS LIST........................................26 6. ADJUSTMENT.........................................................30 7. GENERAL INFORMATION.......................................32 7.1 DISASSEMBLY ..................................................32 7.2 PARTS ................................................................33 7.2.1 IC...............................................................33 7.2.2 DISPLAY ...................................................36 8. OPERATIONS AND SPECIFICATIONS....................37 KEH-1950�X1M/ES KEH-1900/X1M/UC - This service manual should be used together with the following manual(s): Model No. Order No. Mech. Module Remarks CX-644 CRT1800 2M Cassette Mech. Module:Circuit Description, Mech.Description, Disassembly 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 6 10 2 9 8 7 5 4 14 19 18 11 15 13 12 1 16 20 17 2 KEH-1900,1950 2. EXPLODED VIEWS AND PARTS LIST 2.1 PACKING 1. SAFETY INFORMATION CAUTION This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual. Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. If you are not qualified to perform the repair of this product properly and safely; you should not risk trying to do so and refer the repair to a qualified service technician. WARNING This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to cause cancer, birth defects or other reproductive harm. Health & Safety Code Section 25249.6 - Proposition 65 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 KEH-1900,1950 NOTE: - Parts marked by “*” are generally unavailable because they are not in our Master Spare Parts List. - Screws adjacent to ∇ mark on the product are used for disassembly. - PACKING SECTION PARTS LIST Part.No Mark No. Description KEH-1900/X1M/UC KEH-1950/X1M/ES * 1 Accessory Assy CEA2350 CEA2350 2 Spring CBH1650 CBH1650 3 Screw Assy CEA2351 CEA2351 4 Screw CBA1304 CBA1304 * 5 Polyethylene Bag CEG-127 CEG-127 6 Screw CRZ50P090FMC CRZ50P090FMC 7 Screw TRZ50P080FMC TRZ50P080FMC * 8 Polyethylene Bag CEG-158 CEG-158 9 Handle CNC5395 CNC5395 10 Bush CNV3930 CNV3930 11 Polyethylene Bag CEG1173 CEG-162 12 Carton CHG3913 CHG3914 13 Contain Box CHL3913 CHL3914 14 Protector CHP1622 CHP1622 15 Protector CHP1623 CHP1623 16 Owner’s Manual CRD3099 CRD3097 17 Installation Manual CRD3100 CRD3098 18 Case Assy CXB3520 CXB3520 19 Cord Assy CDE6145 CDE6145 * 20 Card ARY1048 Not used - Owner's Manual Model Part No. Language KEH-1900/X1M/UC CRD3099 English, French, Spanish KEH-1950/X1M/ES CRD3097 English, Spanish, Portuguese(B), Chinese, Arabic - Installation Manual Model Part No. Language KEH-1900/X1M/UC CRD3100 English, French, Spanish KEH-1950/X1M/ES CRD3098 English, Spanish, Portuguese(B), Chinese, Arabic 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 KEH-1900,1950 2.2 EXTERIOR 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 KEH-1900,1950 (1) EXTERIOR SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 Screw BSZ26P050FMC 2 Screw BSZ30P055FUC 3 Screw BSZ30P060FMC 4 Screw BSZ30P100FMC 5 Cord Assy CDE6145 6 Case CNB2481 7 Holder CNC5704 8 Insulator CNM5025 9 Cushion CNM5210 10 Panel CNS5214 11 Tuner Amp Unit See Contrast table(2) 12 Screw BPZ26P080FMC 13 Screw BSZ26P080FMC 14 Screw BSZ26P140FMC 15 FM/AM Tuner Unit See Contrast table(2) 16 Holder CNC6554 17 Pin Jack(CN401) CKB1028 18 Plug(CN603) CKM1270 19 Connector(CN601) CKS3362 20 Connector(CN602) CKS3581 21 Antenna Jack(CN301) CKX1056 22 Panel CNB2247 23 Holder CNC5399 24 Holder CNC6216 25 Heat Sink CNC6217 26 Holder CNC6531 27 Holder CNC6845 28 Chassis Unit CXA9851 29 Holder Unit CXB2687 30 Detach Grille Assy See Contrast table(2) 31 Screw BPZ20P120FZK 32 Button(EJECT) CAC5870 33 Button(REW) CAC5872 34 Button(FF) CAC5874 35 Button(CROSS) CAC6295 36 Button(TUNER/BAND) CAC6297 37 Button(1-6) CAC6300 38 Button(DETACH) CAC6301 39 Spring CBH1836 40 Spring CBH2307 41 Cover CNS5696 42 Keyboard Unit CWM6745 43 LCD(LCD901) CAW1568 44 Connector(CN901) CKS3580 45 Holder CNC8525 46 Sheet CNM6486 47 Lighting Conductor CNV5969 48 Rubber CNV5970 49 Connector CNV5972 50 Grille Unit See Contrast table(2) 51 Button CAC4836 52 Spring CBH1834 53 Spring CBH1835 54 Spring CBH2367 55 Bracket CNC6135 56 Bracket CNC6791 57 Arm CNV4692 58 Arm CNV4693 59 Arm CNV4728 60 Panel Unit CXB4926 61 Door CAT2109 62 Spring CBH1838 63 Screw IMS20P030FZK 64 Fuse(10A) CEK1136 65 Cassette Mechanism Assy EXK3410 66 IC(IC501) TDA7384 67 Transistor(Q804) 2SD2395 * 68 Cord See Contrast table(2) 69 Holder See Contrast table(2) (2) CONTRAST TABLE KEH-1900/X1M/UC and KEH-1950/X1M/ES are constructed the same except for the following: Part No. Mark No. Description KEH-1900/X1M/UC KEH-1950/X1M/ES 11 Tuner Amp Unit CWM6742 CWM6744 15 FM/AM Tuner Unit CWE1467 CWE1486 30 Detach Grille Assy CXB4673 CXB4674 50 Grille Unit CXB4633 CXB4634 * 68 Cord CDC1043 Not used 69 Holder CNC8818 Not used 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 KEH-1900,1950 2.3 CASSETTE MECHANISM ASSY 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 KEH-1900,1950 1 Screw BSZ23P050FMC 2 Washer CBG1003 3 Connector(CN1) CKS2829 4 Screw(M2x5) EBA1038 5 Screw(M2x2.5) EBA1037 6 Spring EBH1554 7 Spring EBH1555 8 Spring EBH1556 9 Spring EBH1603 10 Spring EBH1591 11 Spring EBH1559 12 Spring EBH1593 13 Spring EBH1561 14 Spring EBH1562 15 Spring EBH1563 16 Spring EBH1623 17 Spring EBH1565 18 Spring EBH1566 19 Spring EBH1567 20 Spring EBH1568 21 Spring EBH1569 22 Spring EBH1571 23 Spring EBH1579 24 Head Base ENC1475 25 Lever ENC1429 26 Lever ENC1430 27 Lever ENC1431 28 Lever ENC1432 29 Arm ENC1433 30 Arm ENC1434 31 Arm ENC1480 32 Arm ENC1493 33 Bracket ENC1477 34 Lever ENC1483 35 Arm ENC1524 36 Frame ENC1440 37 Holder ENC1441 38 Lever ENC1446 39 Lever ENC1478 40 Belt ENT1027 41 Gear ENV1504 42 Gear ENV1470 43 Gear ENV1471 44 Lever ENV1472 45 Gear ENV1510 46 Gear ENV1475 47 Gear ENV1512 48 Gear ENV1513 49 Gear ENV1502 50 Lever ENV1480 51 Lever ENV1487 52 ••••• 53 Arm ENV1519 * 54 PCB ENP1161 55 ••••• 56 Switch(FWD)(REV)(S3) ESH1006 57 Switch(Load)(S1) ESN1016 58 Switch(Mute)(S2) ESN1017 59 Head Assy(HD1) EXA1466 60 Motor Unit(M1) EXA1467 61 Flywheel Unit EXA1547 62 ••••• 63 Arm Unit EXA1447 64 Arm Unit EXA1448 65 Arm Unit EXA1534 66 Reel Unit EXA1450 67 Pinch Holder ENV1466 68 Pinch Roller ENV1518 69 Pinch Holder ENV1467 70 ••••• 71 Chassis Unit EXA1498 72 Arm ENV1524 73 Washer HBF-167 74-78 ••••• 79 Cover ENC1452 80 Washer CBF1051 81 Spring EBH1592 Mark No. Description Part No. Mark No. Description Part No. - CASSETTE MECHANISM ASSY SECTION PARTS LIST 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 KEY MATRIX HEAD M MOTOR FWD Lch REV Lch FWD-L REV-L Q808 Q806 Q807 Q805 FM SWITCH AM SWITCH FM AM FIX+B VCO AMIF EO Q303 Q302 LOOP FILTER 3 13 6 54 51 X601 4.5MHz 25 24 EO AMIF VCOIN FM AM XI XO SL FMSD 14 12 SYSTEM CONTROLLER IC 601 (1/2) PE5107A SL FMSD Q804 9V REGULATOR FIX+B Q803 Q802 B.U SYSPW ILL+B ILL+B IL901-903 FM OSC Q201 Q202 FMTV AM OSC AMIFC VCO FM+B AM+B TUN+B FMSD 25 26 19 20 15 17 21 14 13 6 7 9 18 41 9 10 14 15 17 19 47 1 2 19 43 40 28 30 31 25 23 18 16 36 32 38 6 34 Q3 FM RF T31 FM/AM MIX Q31 CF51 FM/AM IF CF52 FM IF CF53 FM IF T51 FMSL AMSL AMTV AMRF/AGC CF232 AM IF FM/AM PROCESSOR IC 1 PA4023B FM PROCESSOR IC 2 PA4024A TUN-L FIX+B A B C D KEYBO FM/AM TUNER UNIT TUNER AMP UNIT CN301 ANT 8 KEH-1900,1950 A 1 2 3 4 B C D 1 2 3 4 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 3.1 BLOCK DIAGRAM - KEH-1900/X1M/UC 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 9 KEH-1900,1950 5 6 7 8 A B C D 5 6 7 8 IC 501 TDA7384 FL+ FL- RL+ RL- MUTE STBY FL RL POWER AMP 9 7 17 19 FL+ FL- RL+ RL- 6 5 8 9 7 2 1 22 4 SYSPW Q501 Q609 Q502 Q607 MUTE Q608 DMINH Q606 FUSE 10A B.U B.U ACC CE VDD1 VDD2 VDD Q603 Q604 Q605 Q801 IC 801 TPD1018F B REMOTE BRE CN603 1 SYSPW 6 5 B.U SYSPW SYSPW 43 7 40 39 CE DMINH MUTE 11 15 19 20 IC 401 SN761029DL ELECTRONIC VOLUME VDT/VCK/VST 2 3 3 IC 201 LA3161P CASSETTE EQUALIZER 1 B.U FIX+B 4 MUTE Q601 63 TAPLD 1 2 NOR/REV MCMUT LOAD B.U MECPW 50 Q809 Q810 MECPW MECHA POWER SWITCH MECHA MUTE MUTE Q403 RL OUT RL Q602 SWVDD 18 VDD SWVDD 9 10 LCK LDT 4 3 5 6 CN602 ILL+B SW5V SCK SIO 4 3 5 6 IC 901 PDC045A KEY/LCD DRIVER RES SCK SO SI VDD 24 17 15 14 13 MATRIX LCD 901 CAW1568 CN901 SYSTEM CONTROLLER IC 601 (2/2) PE5107A MUTE SWITCH LOAD SWITCH FWD/REV FWD/REV SWITCH GND 1 10 6 8 4 9 1 10 6 8 4 9 CN601 FWD-L REV-L ILL+B 03 Q401 TUN-L FL SPEAKER RL SPEAKER ACC BATTERY B REMOTE D CASSETTE PCB EYBOARD UNIT CN401 REAR Lch OUT FL+ FL- RL+ RL- 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 KEH-1900,1950 A 1 2 3 4 B C D 1 2 3 4 A-a A-b A-a A-b A-b A-a Large size SCH diagram Guide page Detailed page ES ONLY UC ONLY ES ONLY UC ONLY ES ONLY R313 10K 22K C313 R022 R047 C314 R01 R001 UC ES *** *** *** SYSTEM CONTROLLER EQ AMP ELECTRONIC VOLU TUNER AMP UNIT A FM/AM TUNER UNIT B CASSETTE PCB D -73dBs -29.0dB AM : -26.0dBs FM : -20.0dBs A D 3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE) Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL PARTS LIST”. A-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 600µH ES ONLY 24P 27P 24P C427 C428 UC ES *** *** CEL 1547 14V 40mA FUSE POWER AMP B.REMOTE UME KEYBOARD UNIT C dBs AM : -0.9dBs FM : 5.1dBs TAPE : -3.9dBs TAPE : 22.1dBs TAPE : -4.5dBs FM : 100% 35.1dBs AM : 30% 24.1dBs TAPE : 315Hz 0dB 22.1dBs KEY/LCD DRIVER 11 KEH-1900,1950 5 6 7 8 A B C D 5 6 7 8 A A-b 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 12 KEH-1900,1950 A 1 2 3 4 B C D 1 2 3 4 ES ONLY ES ONLY UC ONLY ES ONLY R313 10K 22K C313 R022 R047 C314 R01 R001 UC ES *** *** *** ELECTRONIC VOLUME TUNER AMP UNIT A FM/AM TUNER UNIT B -29.0dBs AM : -26.0dBs FM : -20.0dBs A-a A-a A-b 1 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 13 KEH-1900,1950 5 6 7 8 A B C D 5 6 7 8 UC ONLY UC ONLY 24P 27P 24P C427 C428 UC ES *** * SYSTEM CONTROLLER EQ AMP CASSETTE PCB D -73dBs A-a A-a A-b D 3 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 14 KEH-1900,1950 A 1 2 3 4 B C D 1 2 3 4 600µH ES ONLY FUSE POWER AMP AM : -0.9dBs FM : 5.1dBs TAPE : -3.9dBs TAPE : 22.1dBs TAPE : -4.5dBs FM : 100% 35.1dBs AM : 30% 24.1dBs TAPE : 315Hz 0dB 22.1dBs A-a A-b A-b 1 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 15 KEH-1900,1950 5 6 7 8 A B C D 5 6 7 8 ES 24P 27P 24P 27 28 UC ES *** CEL 1547 14V 40mA B.REMOTE KEYBOARD UNIT C KEY/LCD DRIVER A-b A-a A-b C 3 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 16 KEH-1900,1950 A 1 2 3 4 B C D 1 2 3 4 3.3 FM/AM TUNER UNIT B 3 1 2 FM/AM TUNER UN D1 D2 RD39JS RD39JS R1 R2 2R2M 2R2M D6 MA157 KEH-1900/X1M/UC KEH-1950/X1M/ES B 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 17 KEH-1900,1950 5 6 7 8 A B C D 5 6 7 8B R UNIT IFC 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 4. PCB CONNECTION DIAGRAM 4.1 TUNER AMP UNIT 18 KEH-1900,1950 A 1 2 3 4 B C D 1 2 3 4 A CORD ASSY TUNER AMP UNIT NOTE FOR PCB DIAGRAMS 1. The parts mounted on this PCB include all necessary parts for several destination. For further information for respective destinations, be sure to check with the schematic diagram. 2. Viewpoint of PCB diagrams Capacitor Connector P.C.Board Chip Part SIDE A SIDE B 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 D B C CN1 CN901 19 KEH-1900,1950 5 6 7 8 A B C D 5 6 7 8A SIDE 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 20 KEH-1900,1950 A 1 2 3 4 B C D 1 2 3 4 A A TUNER AMP UNIT 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 21 KEH-1900,1950 5 6 7 8 A B C D 5 6 7 8A SIDE B 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 22 KEH-1900,1950 A 1 2 3 4 B C D 1 2 3 4 4.2 FM/AM TUNER UNIT B SIDE A B FM/AM TUNER UNIT 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 23 KEH-1900,1950 1 2 3 4 A B C D 1 2 3 4 B SIDE B B FM/AM TUNER UNIT 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 KEH-1900,1950 A 1 2 3 4 B C D 1 2 3 4 A CN602 TUNER BAND 1 2 3 4 5 6 S CLOCK BSM LOCAL 4.3 KEYBOARD UNIT C C KEYBOARD UNIT 24 SIDE B SIDE A C KEYBOARD UNIT 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 5 7 9 2 4 6 8 10 CN1 S3 FWD/REV SW S2 MUTE SW S1 LOAD SW M M1 MOTOR RR FR FL RL FWD/REV PB HEAD HD1 A CN601 25 KEH-1900,1950 1 2 3 4 A B C D 1 2 3 4D D CASSETTE PCB 4.4 CASSETTE PCB 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 Unit Number : CWM6742 (KEH-1900/X1M/UC) : CWM6744 (KEH-1950/X1M/ES) Unit Name : Tuner Amp Unit MISCELLANEOUS IC 201 IC LA3161P IC 401 IC SN761029DL IC 501 IC TDA7384 IC 601 IC PE5107A IC 801 IC TPD1018F Q 301 Transistor 2SC1740S Q 302 Transistor 2SC1740S Q 303 Transistor 2SK330 Q 305 Transistor (1900/X1M/UC) 2SC2498 Q 401 Transistor DTC143TS Q 402 Transistor DTC143TS Q 403 Transistor DTA124ES Q 501 Transistor DTC124ES Q 502 Transistor DTC124ES Q 601 Transistor DTC114ES Q 602 Transistor 2SA933S Q 603 Transistor DTA114ES Q 604 Transistor 2SC1740S Q 605 Transistor 2SC1740S Q 606 Transistor 2SC1740S Q 607 Transistor 2SC1740S Q 608 Transistor DTC124TS Q 609 Transistor DTC143TS Q 801 Transistor 2SD1859 Q 802 Transistor 2SB1238 Q 803 Transistor DTC124ES Q 804 Transistor 2SD2395 Q 805 Transistor 2SA933S Q 806 Transistor 2SA933S Q 807 Transistor DTC114ES Q 808 Transistor DTC114ES Q 809 Transistor DTC143TS Q 810 Transistor 2SB1242 D 201 Diode 1SS270 D 301 Diode MTZJ3R0(B) D 302 Diode 1SS270 D 303 Diode 1SS270 D 601 Diode 1SS270 D 602 Diode 1SS270 D 603 Diode 1SS270 D 604 Diode 1SS270 D 605 Diode HZS7L(A1) D 606 Diode 1SS270 D 607 Diode 1SS270 D 608 Diode 1SS270 D 609 Diode HZS7L(A1) D 610 Diode HZS7L(C3) D 611 Diode HZS7L(B1) D 612 Diode 1SS270 D 613 Diode 1SS270 D 614 Diode 1SS270 D 615 Diode HZS9L(A2) D 616 Diode 1SS270 D 617 Diode 1SS270 D 801 Diode 1SR139-400 D 802 Diode 1SR139-400 D 803 Diode 1SR139-400 D 804 Diode 1SR139-400 D 805 Diode 1SR139-400 D 806 Diode HZS6L(B2) D 807 Diode HZS9L(B3) L 601 Ferri-Inductor LAU2R2K L 602 Ferri-Inductor LAU2R2K L 801 Choke Coil 600µH CTH1168 X 601 Crystal Resonator 4.500MHz CSS1077 FM/AM Tuner Unit (1900/X1M/UC) CWE1467 FM/AM Tuner Unit (1950/X1M/ES) CWE1486 RESISTORS R 201 RS1/10S104J R 202 RS1/10S104J R 203 RS1/10S472J R 204 RS1/10S472J R 205 RS1/10S470J R 206 RS1/10S470J R 207 RS1/10S273J R 208 RS1/10S273J R 301 RS1/10S102J R 302 RS1/10S222J R 303 RS1/10S222J R 304 RD1/4PU102J R 305 RS1/10S102J R 306 (1900/X1M/UC) RS1/10S101J R 307 (1900/X1M/UC) RS1/10S332J R 308 (1900/X1M/UC) RS1/10S331J R 309 (1900/X1M/UC) RS1/10S331J R 310 (1900/X1M/UC) RS1/10S821J R 311 (1900/X1M/UC) RS1/10S330J R 312 (1900/X1M/UC) RS1/10S680J R 313 (1900/X1M/UC) RS1/8S103J R 313 (1950/X1M/ES) RS1/8S223J R 314 RD1/4PU103J R 315 RS1/10S102J R 316 RS1/10S472J R 317 RS1/10S152J R 318 RD1/4PU222J R 319 RS1/10S222J R 320 RS1/10S102J R 321 RD1/4PU103J 26 KEH-1900,1950 5. ELECTRICAL PARTS LIST NOTE: - Parts whose parts numbers are omitted are subject to being not supplied. - The part numbers shown below indicate chip components. Chip Resistor RS1/_S___J,RS1/__S___J Chip Capacitor (except for CQS.....) CKS....., CCS....., CSZS..... =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- 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 R 322 RS1/10S393J R 323 (1950/X1M/ES) RS1/10S0R0J R 324 RS1/10S0R0J R 331 (1950/X1M/ES) RS1/8S0R0J R 401 RS1/10S162J R 402 RS1/10S162J R 403 RS1/10S0R0J R 405 RS1/10S272J R 406 RS1/10S272J R 407 RS1/10S151J R 408 RS1/10S151J R 411 RS1/10S821J R 412 RS1/10S821J R 413 RS1/10S223J R 414 RS1/10S223J R 415 RS1/10S182J R 501 RS1/10S153J R 502 RS1/10S221J R 503 RS1/10S101J R 504 RD1/4PU153J R 601 RD1/4PU102J R 602 RS1/10S473J R 603 RS1/10S103J R 604 RD1/4PU332J R 605 RS1/10S473J R 606 RS1/10S222J R 607 RS1/10S222J R 608 RD1/4PU473J R 609 RS1/10S123J R 612 RD1/4PU472J R 613 RD1/4PU473J R 614 RS1/10S473J R 615 RS1/10S222J R 616 RD1/4PU222J R 617 RD1/4PU222J R 618 RS1/10S1R0J R 621 RD1/4PU222J R 622 RS1/10S473J R 623 RS1/10S472J R 624 RS1/10S223J R 625 RS1/10S103J R 626 RS1/10S223J R 627 RS1/10S103J R 628 RS1/10S104J R 629 RS1/10S223J R 630 RS1/10S103J R 631 RD1/4PU472J R 632 RS1/10S472J R 633 RS1/10S103J R 634 RS1/10S223J R 635 RD1/4PU152J R 636 RD1/4PU103J R 638 RS1/10S472J R 639 (1900/X1M/UC) RS1/10S472J R 640 (1950/X1M/ES) RS1/10S472J R 801 RD1/4PU102J R 803 RS1/10S103J R 804 RS1/10S223J R 805 RD1/4PU331J R 806 RD1/4PU331J R 807 RD1/4PU511J R 808 RS1/10S472J R 809 RS1/10S102J R 810 RS1/10S472J R 811 RS1/10S102J R 812 RS1/10S472J R 813 RD1/4PU102J R 814 RD1/4PU1R5J R 815 RD1/4PU1R5J R 816 RD1/4PU103J CAPACITORS C 201 CEJA2R2M50 C 202 CEJA2R2M50 C 203 CKSQYB333K25 C 204 CKSQYB333K25 C 205 CEJA101M10 C 206 CEJA101M10 C 207 CKSQYB681K50 C 208 CKSQYB681K50 C 209 CEJA101M10 C 301 CKSQYB473K25 C 302 CKSQYB104K16 C 303 CKSQYB223K50 C 304 CKSQYB104K16 C 305 CKSQYB223K50 C 306 CKSQYB102K50 C 307 CKSQYB103K50 C 308 CCSQCH101J50 C 309 (1900/X1M/UC) CKSQYB103K50 C 310 (1900/X1M/UC) CKSQYB681K50 C 311 CCSQCH101J50 C 312 (1900/X1M/UC) CCSQCH101J50 C 313 (1900/X1M/UC) CKSQYB223K50 C 313 (1950/X1M/ES) CKLSR473K16 C 314 (1900/X1M/UC) CKSQYB103K50 C 314 (1950/X1M/ES) CKSQYB102K50 C 315 4.7µF/16V CCH1250 C 316 CKSQYB103K50 C 318 CKSQYB223K50 C 319 CKSQYB223K50 C 401 CKSQYB473K25 C 402 CKSQYB473K25 C 403 CEJA1R0M50 C 404 CEJA1R0M50 C 405 CEJA1R0M50 C 406 CEJA1R0M50 C 407 CEJA100M16 C 408 CEJA100M16 C 409 CKSQYB822K50 C 410 CKSQYB822K50 C 411 CEJA1R0M50 C 412 CEJA1R0M50 C 413 CKSQYB153K50 C 414 CKSQYB153K50 C 415 CKSQYB104K16 C 416 CKSQYB104K16 C 417 CKSQYB104K16 C 418 CKSQYB104K16 C 419 CKSQYB104K16 C 420 CEJA470M10 C 421 CEJA2R2M50 C 422 CEJA4R7M35 C 423 CKSQYB473K25 C 424 CEJA1R0M50 C 425 CEJA2R2M50 C 426 CEJA2R2M50 C 427 (1950/X1M/ES) CCSQCH240J50 C 428 (1900/X1M/UC) CCSQCH270J50 C 428 (1950/X1M/ES) CCSQCH240J50 C 501 CFTNA224J50 C 502 CFTNA224J50 C 503 CFTNA224J50 C 504 CFTNA224J50 C 505 CEJA330M10 C 506 CEJA2R2M50 C 507 CFTNA105J50 27 KEH-1900,1950 =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- 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 508 CEJA100M16 C 510 CKSQYB104K50 C 601 CKSQYB104K16 C 602 CKSQYB102K50 C 603 CEJA4R7M35 C 604 CKSQYB224K16 C 605 CKSQYB102K50 C 606 CCSQCH100D50 C 607 CCSQCH110J50 C 608 CKSQYB103K50 C 609 (1950/X1M/ES) CKSQYB104K16 C 610 CKSQYB472K50 C 611 CKSQYB472K50 C 801 3300µF/16V CCH1369 C 802 CKSQYB103K50 C 803 CKSYB103K50 C 804 CEAS331M16 C 805 CKSQYB102K50 C 806 330µF/10V CCH1181 C 807 CKSQYB103K50 C 808 330µF/10V CCH1181 C 809 CCSQCH101J50 C 810 CCSQCH101J50 Unit Number : CWE1467 (KEH-1900/X1M/UC) : CWE1486 (KEH-1950/X1M/ES) Unit Name : FM/AM Tuner Unit MISCELLANEOUS IC 1 IC PA4023B IC 2 IC PA4024A Q 1 Transistor 2SC2412K Q 2 Transistor DTC124EU Q 3 FET 3SK263 Q 31 Transistor 2SC2412K Q 201 FET 2SK932 Q 202 Transistor 2SC2412K Q 203 Transistor DTC124EU D 1 Diode RD39JS D 2 Diode RD39JS D 4 Diode 1SV250 D 5 Diode KV1410-F1 D 6 Diode MA157 D 7 Diode KV1410-F1 D 8 Diode KV1410-F1 D 201 Diode MA157 D 202 Diode MA157 D 231 Diode SVC253 L 2 Coil CTC1133 L 3 Inductor LCTB2R2K2125 L 4 Coil CTC1133 L 5 Coil CTC1132 L 6 Inductor (1950/X1M/ES) LCTBR15K1608 L 51 Ferri-Inductor LAU150K L 201 Ferri-Inductor LAU4R7K L 202 Ferri-Inductor LAU330K L 203 Inductor LFEA102J L 208 Inductor LAU121K L 231 Inductor LCTA3R3J3225 T 31 Coil CTE1116 T 51 Coil CTC1159 CF 51 Ceramic Filter CTF1441 CF 52 Ceramic Filter CTF1441 CF 53 Ceramic Filter CTF1441 CF 232 Ceramic Filter CTF1348 X 151 Radiator 918.5Hz CSS1365 X 231 Crystal Resonator 10.26MHz CSS1111 VR 154 Semi-fixed 150kΩ(B) CCP1213 RESISTORS R 1 RS1/16S225J R 2 RS1/16S225J R 4 RS1/16S154J R 5 RS1/16S391J R 6 RS1/16S223J R 7 RS1/16S123J R 8 RS1/16S332J R 9 RS1/16S473J R 10 RS1/16S223J R 11 RS1/16S124J R 13 RS1/16S563J R 15 RS1/16S271J R 16 RS1/16S104J R 17 RS1/16S332J R 18 RS1/16S332J R 31 RS1/16S470J R 32 RS1/16S822J R 33 RS1/16S822J R 34 RS1/16S331J R 35 RS1/16S331J R 40 RS1/16S470J R 51 RS1/16S271J R 52 RS1/16S560J R 55 RS1/16S102J R 56 RS1/16S823J R 61 RS1/16S392J R 62 RS1/16S273J R 101 RS1/16S272J R 102 RS1/16S682J R 103 RS1/16S333J R 104 RS1/16S334J R 105 RS1/16S683J R 107 RS1/16S222J R 151 RS1/16S222J R 152 RS1/16S393J R 155 RS1/16S273J R 156 RS1/16S243J R 157 RS1/16S203J R 160 RS1/16S222J R 161 RS1/16S563J R 162 RS1/16S105J R 163 RS1/16S223J R 202 RS1/16S223J R 203 RS1/16S225J R 204 RS1/16S103J R 206 RS1/16S220J R 207 RS1/16S101J R 208 RS1/16S102J R 209 RS1/16S471J R 214 RS1/16S822J R 215 RS1/16S822J R 217 RS1/16S102J R 231 RS1/16S272J R 232 RS1/16S473J R 237 RS1/16S103J R 238 RS1/16S104J R 239 RS1/16S104J R 240 RS1/16S332J R 241 RS1/16S202J R 243 RS1/16S183J R 244 RS1/16S392J R 247 RS1/16S123J 28 KEH-1900,1950 =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- B 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 29 KEH-1900,1950 =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ ------------------------- CAPACITORS C 1 CCSQCH6R0D50 C 2 CCSRCK2R0C50 C 4 CCSRCH820J50 C 6 CCSRCH820J50 C 8 CKSRYB103K25 C 9 CKSQYB104K16 C 10 CCSRCKR50C50 C 11 CEJA1R0M50 C 12 CKSRYB222K50 C 13 CKSRYB222K50 C 14 CCSRCH220J50 C 15 CCSRCH6R0D50 C 16 CCSRCH8R0D50 C 17 CKSRYB222K50 C 18 CKSRYB103K25 C 19 CKSRYB222K50 C 20 CKSRYB222K50 C 21 CEJA100M16 C 22 CCSRTH9R0D50 C 23 CCSRTH120J50 C 24 CCSRCH471J50 C 25 CKSRYB103K25 C 26 (1900/X1M/UC) CCSRCH101J50 C 31 CKSRYB103K25 C 32 CKSQYB472K50 C 33 CCSRCH5R0C50 C 34 CKSQYB104K16 C 36 CCSRRH201J50 C 51 CKSRYB223K25 C 52 CKSRYB103K25 C 54 CCSRCH470J50 C 55 CKSQYB223K25 C 56 CKSQYB104K16 C 57 CKSRYB472K50 C 58 CEJA330M10 C 59 CKSRYB103K25 C 60 CKSRYB102K50 C 61 CCSRCH270J50 C 62 CKSRYB103K25 C 63 CEJAR22M50 C 101 CEJANP100M10 C 102 CKSRYB182K50 C 103 CKSRYB682K25 C 104 CEJA2R2M50 C 105 CKSRYB103K25 C 106 CCSRCH151J50 C 107 CKSRYB103K25 C 151 CKSRYB472K50 C 152 CKSQYB104K16 C 153 CEJA3R3M50 C 154 CKSQYB104K16 C 157 CEJA3R3M50 C 158 CKSYB474K16 C 159 CEJA220M6R3 C 160 CKSQYB104K16 C 161 CKSQYB104K16 C 162 CEJA3R3M50 C 163 CKSRYB102K50 C 170 CCSRCH100D50 C 201 CCSRCH471J50 C 202 CCSRCH100D50 C 203 CKSRYB332K50 C 204 CKSQYB473K16 C 205 CKSQYB473K16 C 206 CKSQYB104K16 C 207 CCSRCH560J50 C 209 CKSQYB104K16 C 211 CCSRCH101J50 C 212 CEJA470M6R3 C 213 CKSRYB103K25 C 216 CCSRCH101J50 C 217 CEJA1R5M50 C 219 CCSRCH471J50 C 220 CKSRYB103K25 C 230 CKSRYB103K25 C 231 CCSRCH330J50 C 232 CCSRCH150J50 C 233 CKSQYB104K16 C 234 CEJA330M10 C 235 CKSRYB332K50 C 236 CKSQYB473K16 C 237 CCSRCH120J50 C 239 CKSRYB472K50 C 240 CEJAR47M50 C 241 CKSQYB104K16 C 242 CEJAR47M50 C 243 CEJAR33M50 C 244 CKSQYB473K16 C 245 CKSRYB333K16 C 246 CKSQYB473K16 C 250 CCSRCH471J50 Unit Number : CWM6745 Unit Name : Keyboard Unit MISCELLANEOUS IC 901 IC PDC045A D 901 Diode MA153 D 902 Diode MA153 D 903 Diode MA110 IL 901 Lamp 14V 40mA CEL1547 IL 902 Lamp 14V 40mA CEL1547 IL 903 Lamp 14V 40mA CEL1547 LCD 901 LCD CAW1568 RESISTORS R 901 RS1/10S222J R 902 RS1/10S222J R 905 RS1/10S682J R 906 RS1/10S473J R 907 RS1/10S472J CAPACITORS C 901 CCSQCH181J50 C 902 CKSQYB103K50 C 903 CKSQYB103K50 C 905 CKSQYB104K16 C 906 10µF/16V CCH1370 Unit Number : Unit Name : Cassette PCB S 1 Swicth(Load) ESN1016 S 2 Swicth(Mute) ESN1017 S 3 Swicth(FWD/REV) ESH1006 Miscellaneous Parts List M 1 Motor Unit EXA1467 HD 1 Head Assy EXA1466 C 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 FM/AM TUNER UNIT 4Ω 4Ω Lch + Lch - Rch + Rch - BACK UP ACC GND +14.4V GND Antenna Jack mV Meter (1) Oscilloscope DC Regulated Power Supply TUNER AMP UNIT 50Ω (75Ω ) FM SSG Stereo Modulator 50Ω (37.5Ω ) Antenna Plug Dummy Antenna FM/AM TUNER UNIT (TOP VIEW) T31 T51 C63 T51 Center Meter FM/AM TUNER UNIT (BOTTOM VIEW) Pin1 Pin13 Pin14 Pin 19 Pin26 L2 L4 L5 VR154 DC V Meter(1) 30 KEH-1900,1950 6. ADJUSTMENT - Connection Diagram 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 31 KEH-1900,1950 FM ADJUSTMENT Modulation M:MONO MOD., 400Hz 30%(22.5kHz Dev.) or 400Hz 100%(75kHz Dev.) S:STEREO MOD., 1kHz, L or R=30%(20.25kHz+7.5kHz Dev.) NOTE:Before proceeding to further adjustments after switching power ON, let the tuner run for ten minutes to allow the circuits to stabilize. KEH-1900/X1M/UC FM SSG Displayed Adjustment Adjustment Method No. Frequency(MHz) Level(dBf) Frequency(MHz) Point (Switch Position) TUN Volt 1 ••••• ••••• 107.9 L5 DC V Meter(1) : 6V IF 2 98.1 M 60—100 98.1 T51 Center Meter : 0 ANT Coil 3 98.1 M 5 98.1 L2 mV Meter(1) : Maximum RF Coil 4 98.1 M 5 98.1 L4 mV Meter(1) : Maximum IFT 5 98.1 M 5 98.1 T31 mV Meter(1) : Maximum (STEREO MODE) ARC 6 98.1 S 40 98.1 VR154 mV Meter(1) : Separation 5dB (STEREO MODE) KEH-1950/X1M/ES FM SSG Displayed Adjustment Adjustment Method No. Frequency(MHz) Level(dBf) Frequency(MHz) Point (Switch Position) TUN Volt 1 ••••• ••••• 108.0 L5 DC V Meter(1) : 6V IF 2 98.1 M 60—100 98.1 T51 Center Meter : 0 ANT Coil 3 98.1 M 5 98.1 L2 mV Meter(1) : Maximum RF Coil 4 98.1 M 5 98.1 L4 mV Meter(1) : Maximum IFT 5 98.1 M 5 98.1 T31 mV Meter(1) : Maximum (STEREO MODE) ARC 6 98.1 S 40 98.1 VR154 mV Meter(1) : Separation 5dB (STEREO MODE) 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 32 KEH-1900,1950 7. GENERAL INFORMATION 7.1 DISASSEMBLY - Remove the Tuner Amp Unit(Fig.2) Remove the two screws. Remove the three screws. Remove the screw. Unbend the tabs at four locations indicated by arrow until straight. Remove the Tuner Amp Unit. - Remove the Case(not shown) 1.Remove the three screws. 2.Remove the Case. - Remove the Cassette Mechanism Assy (not shown) 1.Remove the four screws. 2.Disconnect the connector, and then remove the Cassette Mechanism Assy. - Remove the Panel Unit(Fig.1) Disengage the stopper at two locations indicated by arrow. Remove the Panel Unit. Fig.1 Fig.2 Panel Unit Tuner Amp Unit Cassette Mechanism Assy 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 33 KEH-1900,1950 7.2 PARTS 7.2.1 IC SN761029DL 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 VCC AVcc IN1-R IN1-L IN2-R IN2-L IN3-R IN3-L IN4(+)-R IN4(+)-L IN4(-)-R IN4(-)-L AGND AGND SWout-R SWout-L ZCin-R ZCin-L LOUD-R LOUD-L VRin-R VRin-L TREB-R TREB-L BASS-C1-R BASS-C1-L BASS-R-R BASS-R-L BASS-C2-R BASS-C2-L NC NC TONEout-R TONEout-L FADERin-R FADERin-L FRNTout-R FRNTout-L REARout-R REARout-L DVcc VREFin DATA AGND CLK DGND STB Ct 3 Line Serial Bus Bass Treble Volume, Loudness Fader Gain Adjust Isolator Zero-cross Detector Power Supply Bass Treble Volume, Loudness Fader Gain Adjust Isolator Power Supply A 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 34 KEH-1900,1950 - Pin Functions (PE5107A) Pin No. Pin Name I/O Format Function and Operation 1 mcmute I Cassette mechanism mute input 2 tapld I Tape loading input 3 EO O C Error output 4 VDD1 Power supply 5 GND GND 6 VCOIN I AM/FM VCO input 7 CE I ACC power sense input 8 VDD2 Power supply 9 LCK I/O C Serial clock input and output for LCD driver 10 LDT O C Data output for LCD driver 11 LDI I Key/LCD driver data input 12 FMSD I FM SD input 13 AMIF I AM IF signal input 14 SL I Signal level input 15 st I FM stereo input 16 sk Not used 17 DK Not used 18 swvdd O C Grille power supply control output 19 NC Not used 20 VST O C Strobe pulse output for electronic volume 21 VCK O C Clock output for electronic volume 22 VDT O C Data output for electronic volume 23 NC Not used 24 XO O Crystal oscillator connection pin 25 XI I Crystal oscillator connection pin 26 GND GND 27–30 NC Not used 31 TEST I Test program mode input 32 dsens I Grille detach sense input 33,34 GND GND 35–38 NC Not used 39 mute O C System mute output 40 DMINH O C Mechanism mute cancel output 41,42 NC Not used 43 SYSPW O C System power supply control output 44–48 NC Not used 49 MS Not used 50 MECPW O C Cassette mechanism power output 51 AM O C AM power control output 52 LOCL O C LOC “L“ output 53 LOCH O C LOC “H” output 54 FM O C FM power control output 55 seek O C Seek output 56 NC Not used 57 LW O C LW output 58 GND GND 59 DM3 Not used 60 DM2 Not used 61 DM1 I Model,function input 62 DM0 I Model,function input 63 nor/REV I Tape running input 64 GND GND 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 35 KEH-1900,1950 - Pin Functions(PDC045A) Pin No. Pin Name I/O Function and Operation 1–4 NC Not used 5–8 KS4-1 O Key strobe output 9–12 KD4-1 I Key data input 13 SI I Display data input 14 SO O Key data output 15 SCK I/O Clock input terminal for serial data input and output 16 REMIN I Remote control reception 17 RES I Reset input 18 TEST I Test input 19 OSC-IN I System clock input 20 OSC-OUT O System clock output 21 GND GND 22,23 VDD2,1 LCD power supply 24 VDD Power supply 25–28 COM1-4 O LCD common signal 29–42 SEG1-14 O LCD segment signal 43–48 NC Not used 12 13 24 25 36 37 48 1 *PDC045A IC's marked by* are MOS type. Be careful in handling them because they are very liable to be damaged by electrostatic induction. Format Meaning C C MOS 19 20 32 33 51 52 64 1 *PE5107A 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 36 KEH-1900,1950 7.2.2 DISPLAY - CAW1568 SEGMENT COMMON 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 Fuse + This Product Antenna jack Rear output To terminal always supplied with power regardless of ignition switch position. To electric terminal controlled by ignition switch (12 V DC) ON/OFF. Connecting cords with RCA pin plugs (sold separately) Blue/white System remote control To system control terminal of the power amp or Auto-antenna relay control terminal. (Max. 300 mA 12 V DC.) Rear Rear ≠� + ≠� Perform these connections when using a different amp (sold separately). To vehicle (metal) body. + Rear Rear ≠� + ≠� + Left speaker Right speaker Front Front ≠� + ≠� Black (ground) Red Yellow White White/black Gray Gray/black Green Green/black Violet/black Violet With a 2 speaker system, connect to the 2 speakers in the front or the rear. Power amp (sold separately) 37 KEH-1900,1950 8. OPERATIONS AND SPECIFICATIONS - KEH-1900/X1M/UC 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 38 KEH-1900,1950 8.1 OPERATIONS Key Finder Head Unit CLOCK button Detach button Cassette door EJECT button SHIFT/LOUD button BAND button 22/33�buttons 2/3�buttons BSM button TUNER button LOCAL button +/–�buttons Buttons 1–6 Basic Operation To Listen to Music The following explains the initial operations required before you can listen to music. Note: • Loading a cassette in this product. 1. Press the TUNER button to switch the Tuner ON/OFF. Note: • You cannot switch to the Tuner when a tape is loaded. • You cannot switch to the Cassette Player when a tape is not loaded. • When this product’s blue/white lead is connected to the car’s Auto-antenna relay control terminal, the car’s Auto-antenna extends when this product’s power is switched ON. To retract the antenna, switch the power OFF. 2. Raise or lower the volume. 3. Turn the Tuner OFF. - KEH-1900/X1M/UC 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 39 KEH-1900,1950 Basic Operation Basic Operation of Tuner Manual and Seek Tuning • Press 2 or 3 to select a station. Note: • You can select the tuning method by pressing the 2 and 3 buttons at the same time. • When the Seek Tuning is selected, “SEEK” lights in the display. • When the Manual Tuning is selected, “SEEK” goes out from the display. • Stereo indicator “” lights when a stereo station is selected. Preset Tuning • You can memorize broadcast stations in buttons 1 through 6 for easy, one-touch station recall. Preset station recall 2 seconds or less Broadcast station preset memory 2 seconds or more Note: • Up to 18 FM stations (6 in FI (FM1), FII (FM2) and FIII (FM3)) and 6 AM stations can be stored in memory. Preset Number Indicator Band FI (FM1) = FII (FM2) = FIII (FM3) = A (AM) Band Indicator Frequency Indicator Basic Operation of Cassette Player Tape Play Indicator Eject The power of this product turns OFF when you eject a tape with the EJECT button. When you listen to the Tuner before a tape is set to this product, the source switches to the radio. Fast Forward/Rewind • To select Fast Forward, press the button for the same direction as the tape play indicator. • To select Rewind, press the button for the opposite direction as the tape play indicator. Note: • To release Fast Forward/Rewind, lightly press the 1 or ¡ button located on the opposite side of the one you pressed to Fast Forward or Rewind. Cassette Loading Slot You can listen to a tape if it is set to this product even when listening to the Tuner. Direction Change • To change the direction, press the 1 and ¡ buttons at the same time. 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 40 KEH-1900,1950 8.2 SPECIFICATIONS Specifications General Power source .......... 14.4 V DC (10.8 – 15.1 V allowable) Grounding system ........................................ Negative type Max. current consumption ........................................ 8.5 A Dimensions (DIN) (chassis) ...... 178 (W) × 50 (H) × 150 (D) mm [7 (W) × 2 (H) × 5-7/8 (D) in] (nose) ............ 188 (W) × 58 (H) × 20 (D) mm [7-3/8 (W) × 2-1/4 (H) × 3/4 (D) in] (D) (chassis) ...... 178 (W) × 50 (H) × 155 (D) mm [7 (W) × 2 (H) × 6-1/8 (D) in] (nose) ............ 170 (W) × 48 (H) × 15 (D) mm [6-3/4 (W) × 1-7/8 (H) × 5/8 (D) in] Weight ........................................................ 1.2 kg (2.6 lbs) Amplifier Continuous power output is 17 W per channel min. into 4 ohms, both channels driven 50 to 15,000 Hz with no more than 5% THD. Maximum power output ...................................... 40 W × 4 Load impedance .......................... 4 Ω (4 – 8 Ω allowable) Preout maximum output level/ output impedance .................................... 2.2 V/1 kΩ Tone controls (Bass) .............................................. ±12 dB (100 Hz) (Treble) ............................................ ±12 dB (10 kHz) Loudness contour ..........+10 dB (100 Hz), +7 dB (10 kHz) (volume: –30 dB) Cassette player Tape ........................ Compact cassette tape (C-30 – C-90) Tape speed ...... 4.76 cm/sec.(+0.14 cm/sec.,-0.05 cm/sec.) Fast forward/rewinding time ...... Approx. 90 sec. for C-60 Wow & flutter .......................................... 0.13% (WRMS) Frequency response ...................... 40 – 14,000 Hz (±3 dB) Stereo separation ...................................................... 45 dB Signal-to-noise ratio...................... 52 dB (IHF-A network) FM tuner Frequency range .................................... 87.9 – 107.9 MHz Usable sensitivity .................................................... 11 dBf (1.0 µV/75 Ω, mono, S/N: 30 dB) 50 dB quieting sensitivity ........................................ 16 dBf (1.7 µV/75 Ω, mono) Signal-to-noise ratio ...................... 70 dB (IHF-A network) Distortion .......................... 0.3% (at 65 dBf, 1 kHz, stereo) Frequency response ...................... 30 – 15,000 Hz (±3 dB) Stereo separation .......................... 40 dB (at 65 dBf, 1 kHz) Selectivity .................................................... 70 dB (2ACA) Three-signal intermodulation (desired signal level) ........................................ 50 dBf (two undesired signal level: 100 dBf) AM tuner Frequency range ...................................... 530 – 1,710 kHz Usable sensitivity .............................. 18 µV (S/N: 20 dB) Selectivity ................................................ 50 dB (±10 kHz) Note: • Specifications and the design are subject to possible modification without notice due to improvements. - KEH-1900/X1M/UC 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 41 KEH-1900,1950 Specifications General Power source .......... 14.4 V DC (10.8 – 15.1 V allowable) Grounding system ........................................ Negative type Max. current consumption ........................................ 8.5 A Dimensions (DIN) (chassis) ...... 178 (W) × 50 (H) × 150 (D) mm (nose) ............ 188 (W) × 58 (H) × 20 (D) mm (D) (chassis) ...... 178 (W) × 50 (H) × 155 (D) mm (nose) ............ 170 (W) × 48 (H) × 15 (D) mm Weight ...................................................................... 1.2 kg Amplifier Continuous power output is 17 W per channel min. into 4 ohms, both channels driven 50 to 15,000 Hz with no more than 5% THD. Maximum power output ...................................... 40 W × 4 Load impedance .......................... 4 Ω (4 – 8 Ω allowable) Preout maximum output level/output impedance .......................... 2.2 V /1 kΩ Tone controls (Bass) ...................................... +8 – –16 dB (100 Hz) (Treble) ............................................ ±12 dB (10 kHz) Loudness contour ..........+10 dB (100 Hz), +7 dB (10 kHz) (volume: –30 dB) Cassette player Tape ........................ Compact cassette tape (C-30 – C-90) Tape speed ...... 4.76 cm/sec.(+0.14 cm/sec.,-0.05 cm/sec.) Fast forward/rewinding time ...... Approx. 90 sec. for C-60 Wow & flutter .......................................... 0.13% (WRMS) Frequency response ...................... 40 – 14,000 Hz (±3 dB) Stereo separation ...................................................... 45 dB Signal-to-noise ratio .................... 52 dB (IEC-A network) FM tuner Frequency range ...................................... 87.5 – 108 MHz Usable sensitivity .................................................... 11 dBf (1.0 µV/75 Ω, mono, S/N: 30 dB) 50 dB quieting sensitivity ........................................ 16 dBf (1.7 µV/75 Ω, mono) Signal-to-noise ratio ...................... 70 dB (IEC-A network) Distortion .......................... 0.3% (at 65 dBf, 1 kHz, stereo) Frequency response ...................... 30 – 15,000 Hz (±3 dB) Stereo separation .......................... 40 dB (at 65 dBf, 1 kHz) AM tuner Frequency range ........................ 531 – 1,602 kHz (9 kHz) 530 – 1,640 kHz (10 kHz) Usable sensitivity .............................. 18 µV (S/N: 20 dB) Selectivity .................................................. 50 dB (±9 kHz) 50 dB (±10 kHz) Note: • Specifications and the design are subject to possible modification without notice due to improvements. - KEH-1950/X1M/ES 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