LS430
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".
3
5
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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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GM-8537ZT/WL
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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GM-8537ZT/WL
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
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
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
7
5
6
7
8
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B
A
5
6
7
8
GM-8537ZT/WL
A-aA-a A-b A-b
A-aA-a
A-b A-b
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
9
5
6
7
8
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B
A
5
6
7
8
GM-8537ZT/WL
A-a
A-b
A-a
A-a
A-b
C
1
2
3
C
ASL UNIT
10
1
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34
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B
A
GM-8537ZT/WL
11
5
6
7
8
F
E
D
C
B
A
5
6
7
8
GM-8537ZT/WL
A-a
A-b
A-a
A-a
A-b
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
234
12
34
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B
A
GM-8537ZT/WL
A-a
A-b
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
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
14
1
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34
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B
A
GM-8537ZT/WL
4. PCB CONNECTION DIAGRAM
4.1 DSP UNIT
Capacitor
Connector
P.C.Board
Chip Part
A
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
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