PIONEER LS430 Service Manual

ORDER NO.

CRT3058

PUB. NO. CRT3058

AUDIO SYSTEM

POWER AMPLIFIER

Manufactured for TOYOTA by PIONEER CORPORATION

VEHICLE DESTINATION PRODUCED AFTER TOYOTA PART No. ID No. PIONEER MODEL No. LEXUS LS430 Europe, Middle Near East, August 2003 86280-50320 GM-8537ZT/WL

Australia, North America 86280-50330 GM-8537ZT-91/WL General Area

LS430

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GM-8537ZT/WL

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.

GM-8537ZT/WL

- Supplementally model is identical to the original except for the addition of following items. *: Non Spare Part

Part No. Description GM-8537ZT-91/WL Cover CEG1045(x2) Polyethylene Bag CEG1174

* Air Cap CHW1945

Carton CHG4796 Contain Box CHL5173(x1/2)

GM-8537ZT-91/WL

NOTE:

- When diagnosing a product, take care of its heated portion. Power IC (IC701,711,721) Power Supply IC (IC852,853) DSP IC (IC301,311) Heat Sink IC Holder

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

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GM-8537ZT/WL

[ 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.

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 UNIT..........................................................18

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

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

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

7. GENERAL INFORMATION.......................................35

7.1 DIAGNOSIS .......................................................35

7.1.1 DISASSEMBLY .........................................35

7.1.2

CONNECTOR FUNCTION DESCRIPTION ......37

7.1.3 THE METHOD OF DISTINGUISHING DEFECTIVE

DSP IC(IC301 OR IC311) DURING DSP ERROR .....38

7.2 IC ........................................................................40

7.3EXPLANATION...................................................44

7.3.1 SYSTEM BLOCK DIAGRAM.....................44

7.3.2 OPERATIONAL FLOW CHART .................47

8. OPERATIONS ...........................................................48

1. SPECIFICATIONS

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

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

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

Dimensions(No Bracket) . . . .285mm(W)x51mm(H)x128mm(D)

Weight(No Bracket) . . . . . . . .1.6kg

Maximum output power . . . .39W or more(Front)

13W or more(Tweeter) 21W or more(Rear) 35W or more(Woofer)

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2. EXPLODED VIEWS AND PARTS LIST

2.1 EXTERIOR

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GM-8537ZT/WL

1 Screw AMZ30P220FTC 2 Screw BMZ26P140FTC 3 Screw (GM-8537ZT/WL) BMZ40P050FTC 4 Screw (GM-8537ZT/WL) BMZ50P060FTC 5 Screw BSZ26P060FTC

6 Chassis CNA2557 7 Case CNB2790 8 Holder CND1204 9 Shield Case CND1276

* 10 86285-50110 (GM-8537ZT/WL) CND1331

* 11 86286-50040 (GM-8537ZT/WL) CND1332

12 Bracket (GM-8537ZT/WL) CND1465 13 Insulator CNM7999 14 Heat Sink CNR1660 15 ASL Unit CWM8305

16 Connector(CN403) CKS4605 17 DSP Unit CWM8583 18 Socket(CN101) CKS4616 19 Socket(CN102) CKS4616 20 Amp Unit CWM8584

21 Screw BSZ26P080FTC 22 Screw(M3x6) CBA1393 23 Clamper CEF1034 24 Connector(CN903) CKM1064 25 Connector(CN901) CKM1363

26 Connector(CN902) CKM1364 27 Plug(CN801) CKS1036 28 Plug(CN905) CKS4569 29 Plug(CN906) CKS4569 30 Connector(CN404) CKS4639

31 Holder CNC9893 32 Bracket CND1202 33 Holder CND1203 34 Sheet CNM7015 35 Fan Motor CXM1266

36 Screw IMS26P060FTC 37 IC(IC701,711,721) PAL006A 38 IC(IC852) 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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3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

DSP UNIT

A

27

IC251

LOUT1

LOUT2

ROUT3

LOUT4

MCLK1

39

DATA,BCK,LRCK

25

24

21

A/D & D/A

32

RIN

31

LIN

AK4529XQ

DSP

IC301

AK7706VTA

MCLK2

16

A0-16 IO0-7

we,oe

IC321

8

IC62C1024AL-70TI

DACCSN,DACCLK,DACDTI,SMUT,PDN

VDD5

IC101

PD5798A

SYSTEM CONTROLLER

IC311

AK7706VTA

MCLK3

16

(FL)

(RL)

(WF)

(SQL)

74

BEEP

ASLIN

SMUTEIN

reset

asens

bsens

TELMUTE

NAVMUTE

AVCP W

AVCI N

AVCOUT

X271

1

IC271

TC7WU04F

2

21

31

9

17

16

36

35

20

22

23

FRONT LPF

3

NJM4580MD

REAR LPF

3

NJM4580MD WOOFER LPF

5

NJM4580MD

SQUAWKER LPF

3

NJM4580MD

7

8

RESET

1

IC186

S-80835CNUA-B8U

IC351

IC361

IC371

IC381

VDD5

(BEEP)

(ASL1)

BUS DRIVER

2

HA12187FP

1

2

IC191

1

7

5

1

4

7

2

1

8

ELECTRONIC

VOLUME

IN5

IN3

PM0017AM

IN2

SN761029DL

VDD5

IC551

IC581

48

SYS801

VDD

6 5

OUT5

OUT3

OUT2

18

20

21

19

FL

CN102

FLO

13

RLO

11

SQLO

7

WFO

10

SYS801

6

BEEP

1

3

LIN

5

RIN

4

VDD5

1

MUTI

12

ASEN

14

BSEN

3

TMUT

217

NMUT

TXH TXP

811

TXL TXM

910

B

CN905

13

11

7

10

6

1

3

5 4

CN906CN101

18

7

5

16

613

FLIN

RLIN

SQLIN

WFIN

LOUT ROUT

VDD5

MUTIN

ASEN

BSEN

TMUTIN

NMUT

SYS8

AMP UNIT

OPE AMP

13

IC651

NJM4580MD

2

BEEP

OPE AMP

13

IC652

NJM4580MD

2

SYS4

BEEP

ASL1

Q851

Q855

VDD5

SYSTEM MUTE

Q756

SWDVDD

NAVI MUTE

Q757

SWVDD

15

STBY1

POWER AMP

14 11

POWER AMP

15

STBY1

Q854

ACC

ACC SENSE

POWER AMP

4

WOOFER

4

1 7

3

TEL MUTE

FRONT

17

IC701

19

PAL006A

1016

22

PMUT

REAR

21

IC711

23

PAL006A

9

7

(SQLP)

(SQLM)

17

IC721

19

PAL006A

10

22

Q721

PMUT

GAIN

ADJ

AUDIO INPUT

BUFFER

IC601

NJM4580MD

IC851

S-812C56AUA-C3K

µCOM VDD

Q752

Q755

SWDVDD

Q701

A

(RLP)

(RLM)

(WFLP)

(WFLM)

A

Q731

B

LINP

3

RINP

5

BU1

2

BACK UP SENSE

Q751

(FLP)

(FLM)

OUTPUT

CONNECTOR

CN901

SQL-

RL-

FL-

BU1

SQL+

RL+

FL+

CN903

ACC

SPD

MTX+ MTX-

WFL+

(SPD)

(TX+)

(TX-)

WFL-

TMUT

N-MU

MUTE

CN902

R+

L+

INPUT

CONNECTOR

(ACC)

BU1

XOUT

10 12

X101

XIN

SPEED

15

40

MUTE

SYSPW

66

MUTO

MUTEO

7

12

PMUT

Q759

SWITCHED 5V

SWDVDD

Q101

VDD5

VA5

VD5

SYSA5

17 2

SYS5SYSD5

118

Q102

SYS8

SYS4

SYS1

9

10

Q753

SPD1SPD1

11 8

ASL UNIT

C

MIC401

MIC

PMUT

Q760

SYS4

Q758

BSENSE MUTE

5V REGULATOR

IC852

1

BA178M05T

8V REGULATOR

IC853

1

NJM2930F08K

Q863

SWDVDD

SPEED PULSE SENSE

ASL

VR401

Q401

3

SYSTEM POWER

5

IC401

NJM4580MD

B

SYSTEM

POWER SWITCH

Q861

STBY1

Q862

SWITCHED 5V

SYSPW1

8

SWDVDD

8

IC402

NJM4580MD

15

ASL1

34

21

SYS8

CN404

CN403

3

77

Q852

Q853

BU1

VDD5

CN801

Q881

Q882

Q883

13

SYS5

BU1

FAN MOTOR

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A

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GM-8537ZT/WL

A-aA-a A-b A-b

A-aA-a

A-b A-b

A-a A-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

AUDIO INPUT DIFFERENTIAL

OPERATIONAL AMPLIFIER

GAIN ADJUSTMENT

SIGNAL INPUT OFF CIRCUIT

TO SUDDEN DECREASE VOLTAGE

OUTPUT OFFSET

INDICATION

OUTPUT OFFSET

INDICATION

OUTPUT OFFSET

INDICATION

AMP INPUT

C

ASL UNIT

B

AMP UNIT

CD:+8.2dBs (1kHz 0dB)

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GM-8537ZT/WL

3.2 SCHEMATIC DIAGRAM (GUIDE PAGE)

A-b

A B

OUTPUT OFFSET

INDICATION

OFFSET INDICATION

MUTE

SPEED PULSE SENSE

FAN MOTOR

CXM1266

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.

A

DSP UNIT

CD:+28.8dBs

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A

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GM-8537ZT/WL

A-a

A-b A-a

A-a

A-b

C

1

2

3

C

ASL UNIT

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B

A

GM-8537ZT/WL

11

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B

A

5

6

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GM-8537ZT/WL

A-a

A-b A-a

A-a

A-b

B

4

5

6

7

8

9

10

AUDIO INPUT DIFFERENTIAL

OPERATIONAL AMPLIFIER

GAIN ADJUSTMENT

SIGNAL INPUT OFF CIRCUIT

TO SUDDEN DECREASE VOLTAGE

OUTPUT OFFSET

INDICATION

OUTPUT OFFSET

INDICATION

OUTPUT OFFSET

INDICATION

AMP INPUT

B

AMP UNIT

CD:+8.2dBs

(1kHz 0dB)

12

1

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A

GM-8537ZT/WL

A-a

A-b

1

2

3

A

DSP UNIT

13

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-8537ZT/WL

A-a

A-b

B

4

5

6

7

8

9

10

OUTPUT OFFSET

INDICATION

OFFSET INDICATION

MUTE

SPEED PULSE SENSE

FAN MOTOR

CXM1266

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.

CD:+28.8dBs

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GM-8537ZT/WL

4. PCB CONNECTION DIAGRAM

4.1 DSP UNIT

Capacitor

Connector

P.C.Board

Chip Part

A

DSP UNIT

SIDE B

SIDE A

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 dia gram.

2.Viewpoint of PCB diagrams

B

CN906

15

5

6

7

8

F

E

D

C

B

A

5

6

7

8

GM-8537ZT/WL

A

SIDE A

B

CN905