Pioneer KEHM-8276, KEHM-8276-ZT Service manual

PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153, 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. 501 Orchard Road, #10-00, wheelock Place, Singapore 238880

C PIONEER ELECTRONIC CORPORATION 1997

K-ZEM. NOV. 1997 Printed in Japan

ORDER NO.

CRT2132

MULTI-CD CONTROL AM/FM CASSETTE DECK

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KEH-M8276ZT X1N/ES

TOYOTA

CONTENTS

1. SAFETY INFORMATION............................................3

2. EXPLODED VIEWS AND PARTS LIST.......................4

3. SCHEMATIC DIAGRAM.............................................8

4. PCB CONNECTION DIAGRAM................................18

5. ELECTRICAL PARTS LIST ........................................28

6. ADJUSTMENT..........................................................35

7. GENERAL INFORMATION.......................................37

7.1 PARTS .................................................................37

7.1.1 IC................................................................37

7.1.2 DISPLAY.....................................................41

7.2 DIAGNOSIS ........................................................42

7.2.1 SELF-DIAGNOSTIC FUNCTION...............42

7.2.2 DISASSEMBLY .........................................46

7.2.3 CONNECTOR FUNCTION DESCRIPTION ..47

7.2.4 TEST MODE...............................................48

7.3 EXPLANATION...................................................50

7.3.1 BLOCK DIAGRAM.....................................50

7.3.2 SYSTEM BLOCK DIAGRAM.....................52

8. OPERATIONS AND SPECIFICATIONS.....................53

NOTE:

- Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation.

"Dolby" and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation.

- See the separate manual CX-631(CRT1640) for the cassette mechanism description.

- The cassette mechanism module employed in this model is one of 2L series.

VEHICLE DESTINATION PRODUCED AFTER TOYOTA PART No. ID No. PIONEER MODEL No.
COROLLA THAILAND OCTOBER 1997 86120-YZB13 T7402 KEH-M8276ZT/X1N/ES

2

KEH-M8276ZT

3

KEH-M8276ZT

1. SAFETY INFORMATION

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 mot risk trying to do so
and refer the repair to a qualified service technician.

4

KEH-M8276ZT

2. EXPLODED VIEWS AND PARTS LIST

2.1 EXTERIOR

Fig. 1

5

KEH-M8276ZT

1 Screw BMZ26P050FMC
2 Screw BMZ26P150FMC
3 Screw BMZ30P050FMC
4 Screw BMZ30P080FZK
5 Case CNB2149

6 Earth Board CNC7121
7 Insulator CNM5187

* 8 Cushion CNM5281

9 Insulator CNM5476

10 Heat Sink CNR1445
11 Control Unit CWM5224

12 Screw BMZ30P050FMC
13 Screw CBA1339
14 Plug(CN101) CKM1221
15 Connector(CN602) CKS1730

16 Connector(CN104) CKS2516
17 Connector(CN103) CKS2518
18 Plug(CN102) CKS3535
19 Antenna Jack(ANT551) CKX1006
20 Holder CNC5399

* 21 Holder CNC6066

22 Holder CNC6211
23 Tuner Unit CWE1426
24 Holder CNC6122
25 Amp Unit CWM5425

26 Connector(CN802) CKM1117
27 Connector(CN801) CKM1118
28 Connector(CN804) CKS2526
29 Connector(CN803) CKS2528
30 Holder CNC5767

31 Bracket CNC6957
32 Screw BPZ20P080FMC
33 Button( ) CAC5022
34 Button(SCAN) CAC5039
35 Button(MUTE) CAC5040

36 Button( , ) CAC5041
37 Button(MODE) CAC5042
38 Button(TUNE,TRACK) CAC5043
39 Button(CD,AM/FM,TAPE) CAC5044
40 Button(1,4) CAC5045

41 Button(2,5) CAC5046
42 Button(3,6) CAC5047
43 Door CAT1932
44 Spring CBH1712
45 Earth Board CNC6960

46 Double Faced Tape CNM5190
47 Cushion CNM5264
48 Cushion CNM5265
49 Plate CNS4377
50 Grille CNS4378

51 Lighting Conductor CNV4851
52 Lighting Conductor CNV5212
53 Keyboard Unit CWM5225
54 LCD(LCD901) CAW1415
55 Socket(CN902) CKS3548

56 Holder CNC7090
57 Insulator CNM5295
58 Plate CNM5672
59 Holder CNV4926
60 Lighting Conductor CNV4927

61 Knob Unit CXB1074
62 Spring CBL-108
63 Chassis Unit CXB1073
64

Cassette Mechanism Module EXK3315

65 Screw IMS30P050FMC
66 IC(IC451) PA2024A

67 IC(IC801) TDA7385

- EXTERIOR SECTION PARTS LIST

Mark No. Description Part No.

Mark No. Description Part No.

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.

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KEH-M8276ZT

2.2 CASSETTE MECHANISM MODULE

Fig. 2

7

KEH-M8276ZT

1 Screw BSZ20P040FMC
2 Washer CBF1037
3 Washer CBF1038
4 Washer CBG1003
5 Deck Unit CWM1007

6 Screw EBA1028
7 Screw EBA1037
8 Spring EBH1531
9 Spring EBH1575

10 Cushion EWM1034
11 Spring EBH1515

12 Spring EBH1587
13 Spring EBH1517
14 Spring EBH1518
15 Spring EBH1519

16 Spring EBH1537
17 Cord EDD1015
18 Photo-interrupter

(EGN2,3) EGN1006

19 Photo-interrupter(EGN1) EGN1005
20 Roller ENR1031

21 Shaft ELA1373
22 Pinch Roller ENV1518
23 Arm ENC1396
24 Arm ENC1397
25 Guide ENC1398

26 Holder ENC1417
27 Lever ENC1448
28 Arm ENC1401
29 Motor EXM1027
30 Belt ENT1027

31 Gear ENV1347
32 Collar ENV1508
33 Gear ENV1350
34 Flywheel ENV1410
35 Worm Gear ENV1439

36 Worm Wheel ENV1440
37 Gear ENR1028
38 Lever ENV1442
39 Arm ENV1445
40 Gathering PCB ENX1037

41 Gathering PCB ENX1038
42 Switch(S1,S2) ESG1004
43 Motor Unit(M2) EXA1485
44 Chassis Unit EXA1511
45 Pinch Holder ENV1485

46 Pinch Holder ENV1486
47 Reel Unit EXA1456
48 Head Base Unit EXA1457
49 Lever Unit EXA1438
50 Gear Unit EXA1436

51 Frame Unit EXA1458
52 Lever Unit EXA1439
53 Head Assy(HD1) EXA1452
54 Motor Unit(M1) EXA1454
55 Washer HBF-179

56 Screw BMZ20P022FMC
57 Spring EBH1545
58 Washer YE20FUC
59 Pinch Holder Unit EXA1529
60 Pinch Holder Unit EXA1528

61 Resistor(R1) RD1/4HM181J
62 Connector(CN253) CKS2129
63 Connector(CN251) CKS1711
64 Connector(CN252) CKS2127
65 Spare Unit CXA3028

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

- CASSETTE MECHANISM MODULE SECTION PARTS LIST

8

KEH-M8276ZT

A

1

234

B

C

D

12

34

3. SCHEMATIC DIAGRAM

3.1 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 A-b

A-a

A-b

A-b

A-a

Large size

SCH diagram

Guide page

Detailed page

A

A-a

A

C

D

E F G

C

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KEH-M8276ZT

5

6

7

8

A

B

C

D

5

6

7

8

A-b

A

B

B

Fig. 3

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KEH-M8276ZT

A

1

234

B

C

D

12

34

A-a

A-a

A-b

A

C

D

11

KEH-M8276ZT

5

6

7

8

A

B

C

D

5

6

7

8

A-a

A-a

A-b

C

E F G

Fig. 4

C

12

KEH-M8276ZT

A

1

234

B

C

D

12

34

A-b

A-a

A-b

B

B

13

KEH-M8276ZT

5

6

7

8

A

B

C

D

5

6

7

8

A-b

A-a

A-b

Fig. 5

14

KEH-M8276ZT

A

1

234

B

C

D

12

34

3.2 TUNER UNIT

PA4023B

D

D

TUNER UNIT

15

KEH-M8276ZT

5

6

7

8

A

B

C

D

5

6

7

8

A

D

Fig. 6

16

KEH-M8276ZT

A

1

234

B

C

D

12

34

3.3 CASSETTE MECHANISM MODULE

E

E

A

CN602

A

17

KEH-M8276ZT

5

6

7

8

A

B

C

D

5

6

7

8

E

F

G

Fig. 7

F

G