Pioneer GM-8437ZT Manual de usuario

PIONEER CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan

PIONEER ELECTRONICS (USA) INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.

PIONEER EUROPE NV Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium

PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936

C PIONEER CORPORATION 2004 K-ZZB. APR. 2004 Printed in Japan

ORDER NO.

CRT3180

POWER AMPLIFIER

GM-8437ZTWL

Service

Manual

TOYOTA

VEHICLE DESTINATION PRODUCED AFTER TOYOTA PART No. ID No. PIONEER MODEL No.

CROWN Singapore, Hong Kong, December 2004 86280-30470 GM-8473ZT/WL

Thailand, Indonesia

GM-8437ZT/WL

For details, refer to "Important symbols for good services".

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[ Important symbols for good services ]

In this manual, the symbols shown-below indicate that adjustments, settings or cleaning should be made securely.

When you find the procedures bearing any of the symbols, be sure to fulfill them:

2. Adjustments

To keep the original performances of the product, optimum adjustments or specification confirmation is indispensable.

In accordance with the procedures or instructions described in this manual, adjustments should be performed.

3. Cleaning

For optical pickups, tape-deck heads, lenses and mirrors used in projection monitors, and other parts requiring cleaning,

proper cleaning should be performed to restore their performances.

5. Lubricants, glues, and replacement parts

Appropriately applying grease or glue can maintain the product performances. But improper lubrication or applying

glue may lead to failures or troubles in the product. By following the instructions in this manual, be sure to apply the

prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed

ones should be used.

4. Shipping mode and shipping screws

To protect the product from damages or failures that may be caused during transit, the shipping mode should be set or

the shipping screws should be installed before shipping out in accordance with this manual, if necessary.

1. Product safety

You should conform to the regulations governing the product (safety, radio and noise, and other regulations), and

should keep the safety during servicing by following the safety instructions described in this manual.

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.

NOTE:

-When diagnosing a product, take care of its heated portion.

Power IC (IC802,803)

Power Supply IC (IC901,902)

DSP IC (IC301,311)

Heat Sink

IC Holder

-Service Precaution

You should conform to the regulations governing the product (safety, radio and noise, and other regulations),

and should keep the safety during servicing by following the safety instructions described in this manual.

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CONTENTS

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

1. SPECIFICATIONS.......................................................3

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

2.1 EXTERIOR............................................................4

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ....6

3.1 BLOCK DIAGRAM ...............................................6

3.2 SCHEMATIC DIAGRAM(GUIDE PAGE) ..............8

4. PCB CONNECTION DIAGRAM................................14

4.1 DSP UNIT...........................................................14

4.2 AMP ASSY.........................................................18

4.3 ASL UNIT...........................................................22

5. ELECTRICAL PARTS LIST........................................23

6. ADJUSTMENT.........................................................28

7. GENERAL INFORMATION.......................................30

7.1 DIAGNOSIS .......................................................30

7.1.1 DISASSEMBLY.........................................30

7.1.2 CONNECTOR FUNCTION DESCRIPTION ......32

7.1.3 THE METHOD OF DISTINGUISHING DEFECTIVE

DSP IC(IC301 OR IC311) DURING DSP ERROR .....33

7.2 IC ........................................................................35

7.3 EXPLANATION...................................................40

7.3.1 SYSTEM BLOCK DIAGRAM.....................40

7.3.2 OPERATIONAL FLOW CHART .................41

8. OPERATIONS...........................................................41

1. SPECIFICATIONS

Power source . . . . . . . . . . . . .13.2±0.1V(10.5-16.0V)

Grounding . . . . . . . . . . . . . . . .Negative type

Backup current . . . . . . . . . . . .0.3mA or less

Dimensions . . . . . . . . . . . . . . .235mm(W)x51mm(H)x128mm(D)

Weight . . . . . . . . . . . . . . . . . . .1348g

Maximum output power . . . .22W or more(Front)

11W or more(Center)

22W or more(Rear)

35W or more(Woofer)

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2. EXPLODED VIEWS AND PARTS LIST

2.1 EXTERIOR

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1 Screw AMZ30P220FTC

2 Screw BSZ26P060FTC

3 Chassis CNA2493

4 Case CNB2743

5 Shield Case CND1276

6 Seal CNM6686

7 Insulator CNM7999

8 Heat Sink CNR1641

9 Amp Assy CWM8256

10 Screw BSZ26P080FTC

11 Screw(M3x6) CBA1393

12 Connector(CN901) CKM1363

13 Connector(CN902) CKM1364

14 Plug(CN905) CKS4569

15 Plug(CN906) CKS4569

16 Connector(CN404) CKS4639

17 Bracket CNC9890

18 Holder CNC9893

19 Holder CND1275

20 Sheet CNM7015

21 DSP Unit CWM8259

22 Socket(CN101) CKS4616

23 Socket(CN102) CKS4616

24 ASL Unit CWM8925

25 Connector(CN403) CKS4605

26 Screw IMS26P060FTC

27 IC(IC802,803) PAL006A

28 IC(IC902) BA178M05T

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.

-For the applying amount of lubricants or glue, follow the instructions in this manual.

( In the case of no amount instructions, apply as you think it appropriate.)

-EXTERIOR SECTION PARTS LIST

Mark No. Description Part No.

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IC251

AK4529XQ

IC551

PM0017AM

IC101

IC186

S-80835CNUA-B8U

IC902

BA178M05T

IC901

NJM2930F08K

Q904

Q906

5V REGULATOR

8V REGULATOR

µCOM VDD

BALANCE→UNBALANCE

INPUT

CONNECTOR

OUTPUT

CONNECTOR

IC501

NJM4580MD

IC802

PAL006A

POWER AMP

GAIN ADJ

IC751

NJM4580MD

75 12

SYS4

BU1

STBY1

BU1

FL- FL+

IC803

PAL006A

RL- RL+

CN901

R+

L+

MUTE

ACC

ASEN

BSEN

asens

bsens

Q922

Q921

RESET

reset 92

SYSTEM CONTROLLER

SYSPW1

SYS1

SYS5SYSD5 118

17 2

SYSA5

VA5

VD5

Q908

SYSPW

STBY1

MUTEO

MUTO

MUTE

MUTIN

MUTI

SMUTEIN

BSENSE

MUTE

VDD5

VDD

BEEP 21

ACC SENSE

BACK UP SENSE

SYSTEM MUTE

BEEP

SYS1

CN906

CN101

CN905

CN102

CN902

ELECTRONIC

VOLUME

ASLIN

IC191

HA12187FP

BUS DRIVER

AVCIN

AVCOUT

AVCPW

811

10 12

XOUT

XIN

IC321

RLO RLIN

18 FLO FLIN

WFO WFIN

(FLM)

(FLP)

LIN

RIN

IN5

IN1

OUT5

OUT1

ADSP UNIT AMP ASSY

PMUT

STBY1

PMUT

(ASL1)

SPD

(SPD)

Q907

11 8 SPD1SPD1

SPEED PULSE SENSE

SPEED

6TXH TXP

TX+

A/D & D/A

IC351

NJM4580MD

FRONT LPF

OUT3

(CTR-)

(CTR+)

IC62C1024AL-70TI

DACCSN,DACCLK,DACDTI,SMUT,PDN

IC271

TC7WU04F

X271

IC402

NJM4580MD

Q401

MIC

MIC401 VR401

IC401

NJM4580MD

ASL

CASL UNIT

CN404

CN403

SYS8

ASL1

S-812C56AUA-C3K

Q901

SYS8

Q833

Q832

Q831

PMUT

Q633

VDD5

SYS8

VDD5

910

TXL TXM

TX-

(BEEP)

BSEN

(ACC)

Q601

SWDVDD

20 8

SWDVDD

(TX+)

(TX-)

Q905 VDD5

SWDVDD

Q909

PD5769B

Q101

VDD5

Q102

X101

LINP

RINP

LIN

RIN

Q631

SWITCHED 5V

SYS801 SYS8

GAIN ADJ

IC701

NJM4580MD

BEEP

SYS4

LOUT

ROUT

IC361

NJM4580MD

REAR LPF

IC371

NJM4580MD

WOOFER LPF

IN3

(FL)

(RL)

(CTR)

IC301

AK7706VTA

IC311

AK7706VTA

A0-16

IO0-7

we,oe

VDD5

DSP

LOUT1

LOUT2

LOUT3

MCLK1

MCLK3

MCLK2

16 16 2

VDD5

DATA,BCK,LRCK

Q632

IC903

Q902

Q903

ACC

SWITCHED 5V

SYSTEM POWER

613 HSW

HSW

calib

Q634

SYSTEM

MUTE

IC640

NJM4580MD

VOICE INTERRUPTION

INPUT DIFFERENTIAL

OPERATIONAL AMPLIFIER

INT1+

SYS8 8

IC451

TC74HC4066AFT

IC461

TC74HC4066AFT

IC471

TC7W66FU

ROUT3 24 (WF)

EXTERNAL INPUT

CHANGE

(FL)

(RL)

(CTR)

IN2

(WF)

MUTE FOR

EXTERNAL

INPUT CHANGE

OUT2

CTRO 99

CTRIN

5(RL+)

(RL-)

CTR- CTR+

(WF-)

(WF+)

WF- WF+

Q803

Q802

FSW

Q913

PWSENS 65 514

FS FS

FSW

OUTPUT OFFSET

INDICATION

XTI

44 46

FLMUTE

RLMUTE

WFMUTE

CTRMUTE

(FL)

(RL)

(CTR)

(WF)

Q851

6V REG.

VCC

ASL1

INT1O

INT1IN

TELMUTE 36 TMUT

TMUTEIN

217

Q621

TEL MUTE

TMUT

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GM-8437ZT/WL

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

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A-aA-a A-bA-b

A-bA-b

A-aA-a

Large size

SCH diagram

Guide page

Detailed page

Note: When ordering service parts, be sure to refer to " EXPLODED VIEWS AND PARTS LIST" or

"ELECTRICAL PARTS LIST". A-a

A B C

SIGNAL INPUT

OFF CIRCUIT TO

SUDDEN DECREASE

VOLTAGE

GAIN ADJUSTMENT

BALANCE UNBALANCE

AUDIO INPUT DIFFERENTIAL

OPERATIONAL AMPLIFIER

VOICE INTERRUPTION

INPUT DIFFERENTIAL

OPERATIONAL AMPLIFIER

(BALANCE)

CASL UNIT

BAMP ASSY

CD:-3.5dBs

CD:+8.2dBs

(1kHz, 0dB)

CD:+1.7dBs

3.2 SCHEMATIC DIAGRAM (GUIDE PAGE)

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A-b

A-a A-b

A-b

A-a

A B

EXTERNAL INPUT

CHANGE MUTE FOR

EXTERNAL INPUT CHANGE

SPEED PULSE SENSE

OUTPUT OFFSET

INDICATION

OUTPUT OFFSET

INDICATION MUTE

OUTPUT OFFSET

INDICATION

OUTPUT OFFSET

INDICATION

ADSP UNIT

Decimal points for resistor

and capacitor fixed values

are expressed as :

2.2 2R2

0.022 R022

←

Symbol indicates a resistor.

No differentiation is made between chip resistors and

discrete resistors.

NOTE :

Symbol indicates a capacitor.

No differentiation is made between chip capacitors and

discrete capacitors.

MAY DAY MUTE

(HELP NET MUTE)

CD:+27.7dBs

CD:-5.87dBs

CD:+2.0dBs

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A-a A-b

A-a

A-b

CD:-3.5dBs

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