Pioneer KEH-1900R Service Manual Download

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KEH-1900R,1930R

(2) CONTRAST TABLE

KEH-1900R/X1M/EW and KEH-1930R/X1M/EW are constructed the same except for the following:

Part No.

Mark

No.

Description

KEH-1900R/X1M/EW

KEH-1930R/X1M/EW

Chassis Unit

CXB3224

CXB3225

Panel Unit

CXB3714

CXB3716

Door

CAT2028

CAT2037

Panel

CNS5211

CNS5212

Detach Grille Assy

CXB3376

CXB3373

Button(Eject)

CAC5870

CAC5871

Button(REW)

CAC5872

CAC5873

Button(FF)

CAC5874

CAC5875

Button(Cross,A,F)

CAC6127

CAC5877

Button(-,-)

CAC5878

CAC5879

,-)

CAC6128

CAC5883

Button(SO/OFF,PGM)

CAC5884

CAC5885

Grille Unit

CXB4038

CXB4039

Cover

CNS5209

CNS5210

Keyboard Unit

CWM6272

CWM6274

Summary of Contents for KEH-1900R

Page 1: ...apan ORDER NO CRT2267 HIGH POWER CASSETTE PLAYER WITH RDS TUNER KEH 1900R X1M EW Service Manual CONTENTS 1 SAFETY INFORMATION 2 2 EXPLODED VIEWS AND PARTS LIST 2 3 BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 9 4 PCB CONNECTION DIAGRAM 18 5 ELECTRICAL PARTS LIST 26 6 ADJUSTMENT 31 7 GENERAL INFORMATION 33 7 1 PARTS 33 7 1 1 IC 33 7 1 2 DISPLAY 36 7 2 DISASSEMBLY 37 8 OPERATIONS AND SPECIFICATIONS 38 KEH 19...

Page 2: ...ed 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 s...

Page 3: ...04 CBA1304 6 Polyethylene Bag E36 615 E36 615 7 Carton CHG3600 CHG3601 8 Contain Box CHL3600 CHL3601 9 Protector CHP1622 CHP1622 10 Protector CHP1623 CHP1623 11 Polyethylene Bag CEG 162 CEG 162 12 Case Assy CXB3520 CXB3520 13 Owner s Manual CRD2806 CRD2806 14 Owner s Manual CRD2807 CRD2807 15 Installation Manual CRD2809 CRD2809 16 Passport CRY1013 CRY1013 17 Warranty Card CRY1087 CRY1087 Owner s M...

Page 4: ...4 KEH 1900R 1930R 2 2 EXTERIOR ...

Page 5: ...NC6135 37 Bracket CNC6791 38 Arm CNV4692 39 Arm CNV4693 40 Arm CNV4728 41 Panel Unit See Contrast table 2 42 Door See Contrast table 2 43 Spring CBH1838 44 Panel See Contrast table 2 45 Screw IMS20P030FZK 46 Detach Grille Assy See Contrast table 2 47 Screw BPZ20P120FZK 48 Button Detachable CAC5869 49 Button Eject See Contrast table 2 50 Button REW See Contrast table 2 51 Button FF See Contrast tab...

Page 6: ...1 Panel Unit CXB3714 CXB3716 42 Door CAT2028 CAT2037 44 Panel CNS5211 CNS5212 46 Detach Grille Assy CXB3376 CXB3373 49 Button Eject CAC5870 CAC5871 50 Button REW CAC5872 CAC5873 51 Button FF CAC5874 CAC5875 52 Button Cross A F CAC6127 CAC5877 53 Button CAC5878 CAC5879 55 Button CAC6128 CAC5883 56 Button SO OFF PGM CAC5884 CAC5885 59 Grille Unit CXB4038 CXB4039 60 Cover CNS5209 CNS5210 61 Keyboard ...

Page 7: ...7 KEH 1900R 1930R 2 3 CASSETTE MECHANISM ASSY ...

Page 8: ...NC1446 39 Lever ENC1478 40 Belt ENT1027 41 Gear ENV1504 42 Gear ENV1470 43 Gear ENV1517 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 Pinch Holder Unit EXA1516 53 Arm ENV1519 54 PCB ENP1161 55 Switch EJECT S4 ESG1006 56 Switch FWD REV S3 ESH1006 57 Switch LOAD S1 ESN1016 58 Switch MUTE S2 ESN1017 59 Head Assy H...

Page 9: ...9 KEH 1900R 1930R A B D C 3 BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 3 1 BLOCK DIAGRAM KEH 1900R X1M EW ...

Page 10: ... A b A a Large size SCH diagram Guide page Detailed page CASSETTE PCB FM AM TUNER UNIT TAPE 24dBs A B D 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 ...

Page 11: ...D UNIT GND RL RR FR FL RL FL FR RR ANT UP BACK ACC IL901 904 CEL1547 KEH 1900R X1M EW CEL1479 KEH 1930R X1M EW B PGM TAPE 25dBs TAPE 25dBs FM 9dBs MW LW 1dBs TAPE 22dBs 11 KEH 1900R 1930R 5 6 7 8 A B C D 5 6 7 8 A A b A C C ...

Page 12: ...12 KEH 1900R 1930R A 1 2 3 4 B C D 1 2 3 4 FM AM TUNER UNIT T A a A a A b B ...

Page 13: ...13 KEH 1900R 1930R 5 6 7 8 A B C D 5 6 7 8 CASSETTE PCB TAPE 24dBs A a A a A b D D ...

Page 14: ...14 KEH 1900R 1930R A 1 2 3 4 B C D 1 2 3 4 TUNER AMP UNIT GND RL RR FR FL RL FL FR RR ANT UP BACK ACC TAPE 25dBs TAPE 25dBs FM 9dBs MW LW 1dBs TAPE 22dBs A a A b A b A ...

Page 15: ...15 KEH 1900R 1930R 5 6 7 8 A B C D 5 6 7 8 KEYBOARD UNIT IL901 904 CEL1547 KEH 1900R X1M EW CEL1479 KEH 1930R X1M EW B PGM A b A a A b C C ...

Page 16: ...16 KEH 1900R 1930R A 1 2 3 4 B C D 1 2 3 4 3 3 FM AM TUNER UNIT B 3 1 2 FM AM TUNE B ...

Page 17: ...17 KEH 1900R 1930R 5 6 7 8 A B C D 5 6 7 8 B TUNER UNIT A ...

Page 18: ...P 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 C CORD ASSY ...

Page 19: ...19 KEH 1900R 1930R 5 6 7 8 A B C D 5 6 7 8 D A 2 1 3 IP BUS CN1 B SIDE A ...

Page 20: ...20 KEH 1900R 1930R A 1 2 3 4 B C D 1 2 3 4 A A TUNER AMP UNIT ...

Page 21: ...21 KEH 1900R 1930R 5 6 7 8 A B C D 5 6 7 8 A SIDE B ...

Page 22: ...22 KEH 1900R 1930R A 1 2 3 4 B C D 1 2 3 4 4 2 FM AM TUNER UNIT B SIDE A B A FM AM TUNER UNIT ...

Page 23: ...23 KEH 1900R 1930R 1 2 3 4 A B C D 1 2 3 4 B SIDE B B FM AM TUNER UNIT ...

Page 24: ...KEH 1900R 1930R A 1 2 3 4 B C D 1 2 3 4 SOURCE PGM VOL VOL D 1 2 3 4 5 6 B A F TA AF PTY 4 3 KEYBOARD UNIT C C KEYBOARD UNIT 24 CN603 A SIDE B SIDE A C KEYBOARD UNIT ...

Page 25: ...1900R 1930R 1 2 3 4 A B C D 1 2 3 4 D D CASSETTE PCB 4 4 CASSETTE MECHANISM PCB 1 3 5 7 9 2 4 6 8 10 CN1 S3 FWD REV SW S4 EJECT SW R1 S2 MUTE SW D1 S1 LOAD SW M M1 MOTOR RR FR FL RL FWD REV PB HEAD HD1 CN604 A ...

Page 26: ...e 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 Unit Number CWM6350 Unit Name Tuner Amp Unit MISCELLANEOUS IC 201 IC LA3161P IC 301 IC PM2007A IC 401 IC SN761029DL IC 501 IC TDA7384 IC 601 IC PE5016A IC 602 IC S 80734AN IC 701 IC PM4006B IC 702 IC NJM2...

Page 27: ... 660 RD1 4PU473J R 661 RS1 10S473J R 662 RD1 4PU223J R 663 RD1 4PU473J R 664 RS1 10S222J R 673 RS1 10S0R0J R 701 RD1 4PU102J R 702 RD1 4PU102J R 703 RS1 8S102J R 704 RD1 4PU102J R 705 RS1 10S102J R 706 RS1 10S0R0J R 707 RS1 10S333J R 708 RS1 10S102J R 709 RS1 10S562J R 710 RS1 10S222J R 711 RS1 10S222J R 712 RS1 10S562J R 713 RS1 10S684J R 714 RS1 8S103J R 715 RS1 10S224J R 716 RS1 10S224J R 717 R...

Page 28: ...YB104K16 C 607 CKSQYB224K16 C 608 CEJA2R2M50 C 619 CKSQYB102K50 C 620 CCSQCH101J50 C 621 CCSQCH101J50 C 623 CKSQYB102K50 C 701 CEJA4R7M35 C 702 CKSQYB104K16 C 703 CCSQCH220J50 C 704 CCSQCH220J50 C 705 CKSQYB472K50 C 706 CKSQYB104K16 C 707 CKSYB105K16 C 708 CKSQYB104K16 C 709 CKSQYB222K50 C 710 CKSQYB104K16 C 711 CKSQYB104K16 C 712 CKSQYB223K50 C 713 CEJA4R7M35 C 714 CKSQYB103K50 C 715 CKSQYB103K50...

Page 29: ...K1608 L 51 Ferri Inductor LAU150K L 201 Ferri Inductor LAU4R7K L 202 Ferri Inductor LAU330K L 203 Inductor CTF1287 L 208 Inductor LAU121K L 231 Inductor LCTA3R3J3225 T 31 Coil CTE1116 T 51 Coil CTC1136 TC 1 Trimmer CCL1046 CF 51 Ceramic Filter CTF1442 CF 52 Ceramic Filter CTF1442 CF 53 Ceramic Filter CTF1442 CF 232 Ceramic Filter CTF1348 X 151 Radiator 918 5Hz CSS1365 X 231 Crystal Resonator 10 26...

Page 30: ... 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 CKSRY...

Page 31: ...ope DC Regulated Power Supply TUNER AMP UNIT 50Ω 75Ω FM SSG Stereo Modulator 50Ω 37 5Ω Antenna 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 TC1 DC V Meter 1 VR701 Q701 EMITTER DC V Meter 2 6 ADJUSTMENT Connection Diagram ...

Page 32: ...ition 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 RF 5 129 3 M 60 80 107 9 TC1 mV Meter 1 Minimum Trimmer 6 RF Coil and RF Trimmer shall be adjusted twice or more IFT 7 98 1 M 5 98 1 T31 mV Meter 1 Maximum STEREO MODE ARC 8 98 1 S 40 98 1 VR154 mV Meter 1 Separation 5dB S...

Page 33: ...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 ...

Page 34: ... volume 26 VST O C Strobe pulse output for electronic volume 27 SYSPW O C System power supply control output 28 mute O C System mute output 29 DMINH O C Mechanism mute cancel output 30 31 NC Not used 32 eW BEW I Model select input 33 GND GND 34 36 NC Not used 37 tmute O Tuner mute output 38 FM O C FM power control output 39 AM O C AM power control output 40 44 NC Not used 45 PEE O C Beep tone outp...

Page 35: ...D 25 26 KDT2 3 I Key data input 2 3 27 28 KST5 4 O Key strobe output 5 4 29 55 SEG39 13 O LCD segment output 39 13 56 VCC 5V 57 64 SEG12 5 O LCD segment output 12 5 IC s marked by are MOS type Be careful in handling them because they are very liable to be damaged by electrostatic induction 80 1 20 21 40 41 60 61 PE5016A Format Meaning C C MOS PD6293A 64 1 16 17 32 33 48 49 Pin No Pin Name I O Form...

Page 36: ...36 KEH 1900R 1930R 7 1 2 DISPLAY CAW1512 SEGMENT COMMON ...

Page 37: ...ove 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 A...

Page 38: ...se be sure to connect to both connectors 16 Connecting cords with RCA pin plugs sold sepaeately 15 Speaker leads Green Front left Green black Front left Gray Front right Gray black Front right Green red Rear left Black green Rear left Gray red Rear right Black gray Rear right 17 Blue 17 Blue 18 To system control terminal of the power amp or Auto antenna relay control termi nal Max 300 mA 12 V DC 1...

Page 39: ...Seek Tuning 0 3 2 seconds Manual Tuning continuously 2 seconds or more Note To select a weak broadcasting station that cannot be tuned in with the Seek Tuning function tune in with Manual Tuning F I F II MW LW Each press changes the Source 4 Raise or lower the volume 5 Turn the source OFF AF Function Switching This product s AF function can be switched ON and OFF AF should be switched OFF for norm...

Page 40: ...3 Raise or lower the volume 4 Remove the cassette tape Note The Tape function can be turned ON OFF with the cassette tape remaining in this product Same Time Key Finder Cassette door Eject button TA AF button PTY button Function button SOURCE button buttons AUDIO button BAND button Buttons 1 6 DISP Clock button Detach button Programmable button 5 2 3 buttons buttons ...

Page 41: ...winding 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 respons...

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