Pioneer KEH-1900-R, KEH-1930-R Service manual

PIONEER ELECTRONIC 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 ELECTRONIC CORPORATION 1999

K-ZZB. MAR. 1999 Printed in Japan

ORDER NO.

CRT2267

HIGH POWER CASSETTE PLAYER WITH RDS TUNER

KEH-1900R X1M/EW

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-1930R X1M/EW

NOTE:

- See the separate manual CX-644(CRT1800) for the cassette mechanism description.

- The cassette mechanism assy employed in this model is one of 2M series.

KEH-1900R/X1M/EW

KEH-1900R,1930R

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.

KEH-1900R,1930R

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-1900R/X1M/EW KEH-1930R/X1M/EW

1 Cord Assy CDE5807 CDE5807 2 Accessory Assy CEA1917 CEA1917 3 Handle CNC5395 CNC5395 4 Bush CNV3930 CNV3930 5 Screw CBA1304 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 Manual, Installation Manual

Model Part No. Language KEH-1900R/X1M/EW CRD2806 English,Spanish,Dutch KEH-1930R/X1M/EW CRD2807 French,Italian,German

CRD2809 English,Spanish,Dutch,French,Italian,German

KEH-1900R,1930R

2.2 EXTERIOR

KEH-1900R,1930R

(1) EXTERIOR SECTION PARTS LIST

Mark No. Description Part No.

1 Screw BSZ26P050FMC 2 Screw BSZ30P100FMC 3 Cord Assy CDE5807 4 Terminal Cover CKX-003 5 Case CNB2481

6 Screw BSZ30P055FUC 7 Screw BSZ30P060FMC 8 Screw BSZ30P100FMC 9 Holder CNC5704

10 Cushion CNM4870

11 Insulator CNM5025 12 Tuner Amp Unit CWM6350 13 ••••• 14 Screw BSZ26P080FMC 15 Screw BSZ26P140FMC

16 FM/AM Tuner Unit CWE1466 17 Holder CNC6554 18 ••••• 19 Plug(CN601) CKM1270 20 Connector(CN604) CKS3362

21 ••••• 22 Connector(CN603) CKS3581 23 Antenna Jack(CN301) CKX1056 24 Panel CNB2246 25 Holder CNC5399

26 Holder CNC6216 27 Heat Sink CNC6217 28 ••••• 29 Holder CNC6845 30 Chassis Unit

See Contrast table(2)

31 Holder Unit CXB2687 32 Button CAC4836 33 Spring CBH1834 34 Spring CBH1835 35 Spring CBH1996

36 Bracket CNC6135 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 table(2) 52 Button(F,A,Cross) See Contrast table(2) 53 Button(-,-) See Contrast table(2) 54 Button(1-6,D,B) CAC5881 55 Button(+,-)

See Contrast table(2)

56 Button(SO/OFF,PGM) See Contrast table(2) 57 Spring CBH1836 58 Spring CBH2103 59 Grille Unit

See Contrast table(2)

60 Cover See Contrast table(2)

61 Keyboard Unit See Contrast table(2) 62 LCD(LCD901) CAW1512 63 Connector(CN901) CKS3580 64 Holder CNC8054 65 Connector CNV5586

66 Rubber CNV5587 67 Holder CNV5589 68 Lighting Conductor CNV5752 69 Case Assy CXB3520 70 IC(IC501) TDA7384

71 Fuse(10A)(FU951) CEK1136 72 Transistor(Q804) 2SD2396 73

Cassette Mechanism Assy EXK3450

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

30 Chassis Unit CXB3224 CXB3225 41 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 Unit CWM6272 CWM6274

KEH-1900R,1930R

2.3 CASSETTE MECHANISM ASSY

KEH-1900R,1930R

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 EBH1590 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 ENC1476 33 Bracket ENC1512 34 Lever ENC1523 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 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(HD1) EXA1466 60 Motor Unit(M1) EXA1467

61 Flywheel Unit EXA1547 62 ••••• 63 Arm Unit EXA1447 64 Arm Unit EXA1448 65 Arm Unit EXA1550

66 Reel Unit EXA1450 67 Pinch Holder ENV1466 68 Pinch Roller ENV1518 69 Pinch Holder ENV1467 70 Pinch Holder Unit EXA1515

71 Chassis Unit EXA1498 72 Arm ENV1524 73 Washer CBF-167 74 Resistor(R1) RD1/4HM472J

75-78 •••••

79 Cover ENC1452 80 ••••• 81 Spring EBH1592 82 Washer CBF1051

Mark No. Description Part No. Mark No. Description Part No.

- CASSETTE MECHANISM ASSY SECTION PARTS LIST

KEH-1900R,1930R

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

- KEH-1900R/X1M/EW

KEH-1900R,1930R

234

A-a A-b

A-a

A-b

A-a

Large size

SCH diagram

Guide page

Detailed page

CASSETTE

PCB

FM/AM TUNER UNIT

TAPE:-24dBs

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

TUNER AMP UNIT

KEYBOARD UNIT

GND

+RL-

ANT

BACK

ACC

IL901~904: CEL1547(KEH-1900R/X1M/EW) : CEL1479(KEH-1930R/X1M/EW)

PGM

TAPE:-25dBs

FM:+9dBs

MW/LW:-1dBs

TAPE:+22dBs

KEH-1900R,1930R

A-b

KEH-1900R,1930R

234

FM/AM TUNER UNIT

A-a

A-b

KEH-1900R,1930R

CASSETTE

PCB

TAPE:-24dBs

A-a

A-b

+ 28 hidden pages