Pioneer KEH-1900 Service Manual Download Page 14 | Manualshive

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KEH-1900,1950

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4

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600

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H

ES ONLY

FUSE

POWER AMP

AM : -0.9dBs

FM : 5.1dBs

T

APE : -3.9dBs

T

APE : 22.1dBs

T

APE : -4.5dBs

FM : 100% 35.1dBs

AM : 30% 24.1dBs

T

APE : 315Hz 0dB 22.1dBs

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A-b

A-b

www. xiaoyu163. com

QQ 376315150

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TEL 13942296513

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TEL 13942296513 QQ 376315150 892498299

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

http://www.xiaoyu163.com

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Summary of Contents for KEH-1900

Page 1: ...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 CR...

Page 2: ...liability 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 r...

Page 3: ...arton 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 Portugue...

Page 4: ...R 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 http www xiaoyu163 com ...

Page 5: ...307 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 U...

Page 6: ...ISM ASSY 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 http www xiaoyu163 com ...

Page 7: ...r 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 U...

Page 8: ...4 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 ...

Page 9: ...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 ...

Page 10: ... 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 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 37631515...

Page 11: ...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 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 http www xiaoyu163 com ...

Page 12: ...ECTRONIC 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 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 http www xiaoyu163 com ...

Page 13: ...STEM CONTROLLER EQ AMP CASSETTE PCB D 73dBs A a A a A b D 3 4 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 http www xiaoyu163 com ...

Page 14: ...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 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 http www xiaoyu163 com ...

Page 15: ... B REMOTE KEYBOARD UNIT C KEY LCD DRIVER A b A a A b C 3 4 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 http www xiaoyu163 com ...

Page 16: ...JS RD39JS R1 R2 2R2M 2R2M D6 MA157 KEH 1900 X1M UC KEH 1950 X1M ES B 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 http www xiaoyu163 com ...

Page 17: ...B R UNIT IFC A 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 http www xiaoyu163 com ...

Page 18: ...ation 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 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 http www ...

Page 19: ... D 5 6 7 8 A SIDE A 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 http www xiaoyu163 com ...

Page 20: ...A TUNER AMP UNIT 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 http www xiaoyu163 com ...

Page 21: ... 8 A SIDE B 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 http www xiaoyu163 com ...

Page 22: ...IT B SIDE A B FM AM TUNER UNIT A 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 http www xiaoyu163 com ...

Page 23: ... B B FM AM TUNER UNIT 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 http www xiaoyu163 com ...

Page 24: ...KEYBOARD UNIT C C KEYBOARD UNIT 24 SIDE B SIDE A C KEYBOARD UNIT 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 http www xiaoyu163 com ...

Page 25: ...CN601 25 KEH 1900 1950 1 2 3 4 A B C D 1 2 3 4 D D CASSETTE PCB 4 4 CASSETTE PCB 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 http www xiaoyu163 com ...

Page 26: ...0 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 10S4...

Page 27: ... 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 ...

Page 28: ...mic 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...

Page 29: ... 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 C...

Page 30: ... 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 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 http w...

Page 31: ...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 ...

Page 32: ...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 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 ...

Page 33: ... 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 QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 ...

Page 34: ...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 Casse...

Page 35: ...m 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 QQ3763151...

Page 36: ...EGMENT COMMON 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 http www xiaoyu163 com ...

Page 37: ...ons 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...

Page 38: ...F 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 X...

Page 39: ...tion 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 ...

Page 40: ...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 ...

Page 41: ...d 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 res...

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