Pioneer GM-8886ZT Service Manual

ORDER NO.

CRT2242

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PUB. NO. CRT2242

AUDIO SYSTEM

POWER AMPLIFIER

Manufactured for TOYOTA

by PIONEER ELECTRONIC CORPORATION

VEHICLE DESTINATION PRODUCED AFTER TOYOTA PART No. ID No. PIONEER MODEL No. LEXUS SC300, U.S.A., CANADA August 1998 86280-24210 GM-8886ZT/UC, LEXUS SC400 GM-8886ZT-91/UC

SC300,400

2

GM-8886ZT,8886ZT-91

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 not risk trying to do so and refer the repair to a qualified service technician.

CONTENTS

1. SAFETY INFORMATION ............................................2

2. EXPLODED VIEWS AND PARTS LIST.......................3

3. SCHEMATIC DIAGRAM .............................................4

4. PCB CONNECTION DIAGRAM ................................10

5. ELECTRICAL PARTS LIST ........................................18

6. ADJUSTMENT..........................................................23

7. GENERAL INFORMATION .......................................25

7.1 IC.........................................................................25

7.2 DIAGNOSIS........................................................28

7.2.1 DISASSEMBLY..........................................28

7.2.2 CONNECTOR FUNCTION DESCRIPTION .......29

7.3 EXPLANATION...................................................30

7.3.1 BLOCK DIAGRAM.....................................30

7.3.2 SYSTEM BLOCK DIAGRAM.....................31

7.3.3 SERVICE MODE FOR DSP AMPLIFIER ....32

8. OPERATIONS AND SPECIFICATIONS.....................34

NOTE:

- The GM-8886ZT-91/UC is supplementary genuine part for a TOYOTA vehicle, and a PIONEER product for recycling stock.

- As for the structure and electrical system, there is no difference between the GM-8886ZT-91/UC and GM-8886ZT/UC.

- The supplementary model is identical with the original ones except for the following items.

R1A

R3T

TLMT

E

R1H

FL+

RDK

RDH

FL-

RDL

RDJ

RDA

WF+

RDQ

WF-

RDM

RL-

RCZ

RR+

RDP

RL+

RCY

RR-

RDN

SGND

R8G

TXM-

ROY

TXM+

L+

R1L

R+

R1J

L-

R-

R1M

R1K

BUS-

BUS+

RDB

ACC

R1B

MUTE

R1D

CDR+

CDR-

UHY

UHZ

MUTE

R2N

SGD4

2CB

CDL+

UHO

CDL-

UH1

FR-

FR+

BU

GM-8886ZT/UC, GM-8886ZT-91/UC

Description Part No. Cover CEG1045 Carton CHA2114 Contain Box CHD2114

3

GM-8886ZT,8886ZT-91

2. EXPLODED VIEWS AND PARTS LIST

2.1 EXTERIOR

A

B

1

15

16

17

2

1

4

1

2

9

11

3

8

14

18

29

28

27

30

6

1

10

24

19

5

26

13

21

20

12

23

22

25

7

1

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.

- EXTERIOR SECTION PARTS LIST

Mark No. Description Part No.

1 Screw BMZ30P060FMC 2 Screw BMZ50P080FMC 3 Screw CBA1327 4 Chassis CNA1852 5 Case CNB2102

6 Shield CNC6809 7 Shield CNC6810 8 Bracket CNC7486 9 Bracket CNC7487

10 Insulator CNM5537

11 Heat Sink CNR1432 12 Amp Unit CWM5682 13 Screw BMZ30P060FMC 14 Screw CBA1393 15 Connector(CN901) CKM1222

16 Connector(CN902) CKM1293 17 Connector(CN903) CKM1245 18 Plug(CN905) CKS3631 19 Plug(CN906) CKS3631 20 Bracket CNC6807

21 Holder CNC6808 22 DSP Unit CWM5683 23 Socket(CN51) CKS3632 24 Socket(CN52) CKS3632 25 Screw IMS30P060FMC

26 Seal CNM5381 27 IC(IC801) TA8221AH1 28 IC(IC821) PAL001A 29 IC(IC851) TA8225H-LF1 30 IC(IC901) NJM7805FA

4

GM-8886ZT,8886ZT-91

1

23

4

1

234

D

C

B

A

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”.

B

PD5452A

+7.13

+0.93

-13.87

HA12187FP

A-a

A-a A-b

A-a

A-b

A-a

Large size

SCH diagram

Guide page

Detailed page

B

5

GM-8886ZT,8886ZT-91

5

6

78

5

6

78

D

C

B

A

A-b

A

B

6

GM-8886ZT,8886ZT-91

1

23

4

1

234

D

C

B

A

PD5452A

HA12187FP

A-a

A-b

7

GM-8886ZT,8886ZT-91

5

6

78

5

6

7

8

D

C

B

A

A-a

A-b

B

+7.13

+0.93

-13.87

8

GM-8886ZT,8886ZT-91

1

23

4

1

234

D

C

B

A

A-a

A-b

A

9

GM-8886ZT,8886ZT-91

5

6

78

5

6

7

8

D

C

B

A

A-b

A-a

A-b

B

10

GM-8886ZT,8886ZT-91

1

23

4

1

234

D

C

B

A

4. PCB CONNECTION DIAGRAM

4.1 DSP 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.

Capacitor

Connector

P.C.Board

Chip Part

SIDE A

SIDE B

A

2. Viewpoint of PCB diagrams

B

CN906

DSP UNIT

A

11

GM-8886ZT,8886ZT-91

5

6

78

5

6

7

8

D

C

B

A

SIDE A

B

CN905