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Service
Manual ORDER NO.
CRT2497
GS300,430
AUDIO SYSTEM
POWER AMPLIFIER
VEHICLE DESTINATION PRODUCED AFTER TOYOTA PART No. ID No. PIONEER MODEL No.
LEXUS GS300,430 USA,EUROPE August 2000 86280-30372 GM-8506ZT/E
GM-8506ZT-91/E
86280-30362 GM-8606ZT/E
GM-8606ZT-91/E
Manufactured for TOYOTA
by PIONEER CORPORATION PUB. NO. CRT2497
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
GM-8506ZT/E GM-8606ZT/E
NOTE:
- The GM-8506ZT-91/E and GM-8606ZT-91/E are supplementally 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-8506ZT-91/E, GM-8606ZT-91/E and
GM-8506ZT/E, GM-8606ZT/E.
- Supplementally model is identical to the original except for the addition of following items.
Part No.
Description GM-8506ZT-91/E GM-8606ZT-91/E
Cover CEG1045 CEG1045
Air cushioned bag CEG1081 CEG1081
Carton CHG3331 CHG3331
Contain Box CHL4148 CHL4149
CONTENTS
1. SAFETY INFORMATION............................................2 7. GENERAL INFORMATION.......................................29
2. EXPLODED VIEWS AND PARTS LIST ......................3 7.1 DIAGNOSIS .......................................................29
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ....5 7.1.1 DISASSEMBLY.........................................29
4. PCB CONNECTION DIAGRAM................................12 7.1.2 CONNECTOR FUNCTION DESCRIPTION ......30
5. ELECTRICAL PARTS LIST........................................20 7.2 IC ........................................................................31
6. ADJUSTMENT .........................................................25 7.3 EXPLANATION...................................................33
7.3.1 OPERATIONAL FLOW CHART .................33
7.3.2 SYSTEM BLOCK DIAGRAM.....................35
7.3.3 SERVICE MODE FOR DSP AMPLIFIER ....36
8. SPECIFICATIONS .....................................................39
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.
2
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
2. EXPLODED VIEWS AND PARTS LIST
2.1 EXTERIOR (GM-8506ZT/E)
1 5
7
1
13 29
28 30 2
8
14 1
1 10
6 21
20
19
17
22 16
27
11
26 18
25 23
15 24
1 12
3
4
1
2
9
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. Mark No. Description Part No.
1 Screw BMZ30P060FMC 16 Screw(M3x6) CBA1393
2 Screw BMZ50P060FMC 17 Bracket CNC6807
3 Screw(M3x5) CBA1327 18 Holder CNC6808
4 Chassis CNA1852 19 Connector(CN901) CKM1222
5 Case CNB2102 20 Connector(CN902) CKM1244
6 Shield CNC6809 21 Connector(CN903) CKM1245
7 Shield CNC6810 22 Plug(CN905) CKS3631
8 Bracket CNC6813 23 Plug(CN906) CKS3631
9 Bracket CNC6811 24 IC(IC901) NJM7805FA
10 Insulator CNM5537 25 IC(IC801) TA8221AH1
11 Heat Sink CNR1432 26 IC(IC821) PAL001A
12 Amp Unit CWM6207 27 IC(IC851) TA8225H-LF1
13 DSP Unit CWM7243 28 Socket(CN51) CKS3632
14 Screw IMS30P060FMC 29 Socket(CN52) CKS3632
15 Screw BMZ30P060FMC * 30 Seal CNM5381
3
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
2.2 EXTERIOR (GM-8606ZT/E)
1 5
7
1
13 29
28 30
14 1 2
1 10
6 21 8
20
19
17
22 16
27
11
26 18
25 23
15 24
12
3
1
2
9
4
1
- EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
1 Screw BMZ30P060FMC 16 Screw(M3x6) CBA1393
2 Screw BMZ50P060FMC 17 Bracket CNC6807
3 Screw(M3x5) CBA1327 18 Holder CNC6808
4 Chassis CNA1852 19 Connector(CN901) CKM1222
5 Case CNB2102 20 Connector(CN902) CKM1244
6 Shield CNC6809 21 Connector(CN903) CKM1245
7 Shield CNC6810 22 Plug(CN905) CKS3631
8 Bracket CNC6813 23 Plug(CN906) CKS3631
9 Bracket CNC6812 24 IC(IC901) NJM7805FA
10 Insulator CNM5537 25 IC(IC801) TA8221AH1
11 Heat Sink CNR1432 26 IC(IC821) PAL001A
12 Amp Unit CWM6208 27 IC(IC851) TA8225H-LF1
13 DSP Unit CWM7245 28 Socket(CN51) CKS3632
14 Screw IMS30P060FMC 29 Socket(CN52) CKS3632
15 Screw BMZ30P060FMC * 30 Seal CNM5381
4
1 2 3 4
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM A
A DSP UNIT B AMP UNIT
B
C
D
5
1 2 3 4
1 2 3 4
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
3.2 SCHEMATIC DIAGRAM
Note: When ordering service parts, be sure to refer to "EXPLODED VIEWS AND PARTS LIST" or "ELECTRICAL
PARTS LIST".
A
A-a
4.9V 4.9V
Large size
A-a A-b
SCH diagram
A-a A-b Guide page
5.0V
A-a A-b Detailed page
B
2.3V
4.9V 4.9V
3.4V
4.9V
3.5V
3.5V 7.9V
3.0V
3.0V
3.0V
3.0V 4.1V 7.5V
3.0V
3.4V 1.0V
0.4V
7.8V
3.5V
7.9V
3.5V
3.5V
3.5V
7.9V
7.9V
3.8V
C
5.0V
TAPE: -1.05dBs
CD: +6.95dBs
TUNER(EW): -9.05dBs
TUNER(UC):-14.05dBs TAPE: -6.85dBs
3.8V
2.5V
5.0V
3.8V
D
6 A B
1 2 3 4
5 6 7 8
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
A-b A
4.9V
A DSP UNIT
4.3V 7.9V 7.9V
4.3V
4.3V
4.9V
2.5V 4.3V
TAPE: -10.05dBs
CD: -3.55dBs
2.5V
4.3V
5.0V
4.9V
4.9V
4.3V
4.3V
4.9V
TAPE: -12.35dBs
CD: -5.85dBs
4.3V
B
2.5V
4.9V
4.3V
4.3V
4.3V
4.9V
4.9V
2.5V
2.5V
2.5V
2.5V
2.5V
3.8V
3.0V
3.8V
3.8V
3.8V
4.9V
2.5V
3.8V
7.9V
2.5V
7.9V
TAPE: +0.2dBs
CD: +8.2dBs
TUNER(EW): -7.8dBs
TUNER(UC):-12.8dBs
13.2V
12.7V
C
13.2V
0.3mH
13.1V 13.2V
3.8V 5.0V
4.1V
3.8V 7.9V
TAPE: +25.15dBs
1.8V
7.6V
1.2V 13.2V
NOTE :
Symbol indicates a resistor.
No differentiation is made between chip resistors and
Decimal points for resistor D
and capacitor fixed values
discrete resistors. are expressed as :
Symbol indicates a capacitor. 2.2 2R2
No differentiation is made between chip capacitors and 0.022 R022
discrete capacitors.
B AMP UNIT
5 6 7
A B 8
7
B
A
D
C
8
A-a A-b
1
1
4.9V 4.9V
A-a
1
2
2
5.0V
2
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
3
3
2.3V
4.9V 4.9V
3.4V
4.9V
4
4
3.5V
3.5V 7.9V
3.0V
3.0V
3.0V 3
3.0V 4.1V 7.5V
3.0V
3.4V 1.0V
0.4V
7.8V
3.5V
7.9V
3.5V
3.5V
3.5V
3.5V
7.9V
3.5V
3.5V
3.5V
7.9V
7.9V
3.8V
4
5
5
5.0V
TAPE: -1.05dBs
CD: +6.95dBs
TUNER(EW): -9.05dBs
TUNER(UC):-14.05dBs TAPE: -6.85dBs
6
6
3.8V
2.5V
5
5.0V
7
7
3.8V
6
7
8
8
A-a B
9
A-a A-b
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
A
B
D
C
B
A
D
C
A-a A-b
10
1
1
4.9V
A DSP UNIT
A-b
4.3V 7.9V 7.9V
1
4.3V
4.3V
4.9V
2.5V 4.3V
2
2
TAPE: -10.05dBs
CD: -3.55dBs
2.5V
4.3V
5.0V
4.9V
4.9V
2
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
4.3V
4.3V
3
3
4.9V
4.3V
CD: -5.85dBs
TAPE: -12.35dBs
2.5V
4.9V
4.3V
4.3V
4.3V
4
4
4.9V
3
2.5V
4.9V
2.5V
2.5V
2.5V
2.5V
3.8V
3.0V
3.8V
3.8V
3.8V
4.9V
2.5V
3.8V
7.9V
2.5V
7.9V
3
3.0
3.8
3.8
3.8
4.9
2.5
3.8
7.9
2.5
7.9V
TAPE: +0.2dBs
CD: +8.2dBs
4 TUNER(EW): -7.8dBs
TUNER(UC):-12.8dBs
13.2V
12.7V
5
5
13.2V
0.3mH
13.1V 13.2V
3.8V 5.0V
6
6
4.1V
3.8V 7.9V
TAPE: +25.15dBs
5
7
7
1.8V
7.6V
1.2V 13.2V
6 NOTE :
Symbol indicates a resistor. Decimal points for resistor
No differentiation is made between chip resistors and and capacitor fixed values
discrete resistors. are expressed as :
Symbol indicates a capacitor. 2.2 2R2
No differentiation is made between chip capacitors and 0.022 R022
discrete capacitors.
7
B AMP UNIT
8
8
A-b B
A-a A-b
11
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
A
B
D
C
1 2 3 4
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
4. PCB CONNECTION DIAGRAM
A
4.1 DSP UNIT
NOTE FOR PCB DIAGRAMS
1. The parts mounted on this PCB 2. Viewpoint of PCB diagrams
include all necessary parts for
several destination. Connector Capacitor
For further information for
SIDE A
respective destinations, be sure
to check with the schematic dia-
gram.
P.C.Board Chip Part SIDE B
A DSP UNIT
B CN906
B
C
D
12 A1 2 3 4
5 6 7 8
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
A
SIDE A
B CN905
B
C
D
5 6 7
A 8
13
1 2 3 4
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
A
A DSP UNIT
B
C
D
14 A
1 2 3 4
5 6 7 8
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
A
SIDE B
B
1 3
2
C
D
5 6 7
A8
15
1 2 3 4
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
4.2 AMP UNIT
A
B AMP UNIT
A CN51
B
C
D
16 B1 2 3 4
5 6 7 8
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
A
SIDE A
A CN52
B
C
D
5 6 7
B 8
17
1 2 3 4
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
A
B AMP UNIT
B
C
D
18 B
1 2 3 4
5 6 7 8
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
A
SIDE B
B
C
D
5 6 7
B 8
19
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
5. ELECTRICAL PARTS LIST
NOTE:
- Parts whose parts numbers are omitted are subject to being not supplied.
- The part numbers shown below indicate chip components.
Chip Resistor
RS1/_S___J,RS1/__S___J
Chip Capacitor (except for CQS.....)
CKS....., CCS....., CSZS.....
=====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No.
--- ------ ------------------------------------------ ------------------------- --- ------ ------------------------------------------ -------------------------
Unit Number : CWM7243(GM-8506ZT/E) L 361 Inductor LCTB1R0K2125
A Unit Number : CWM7245(GM-8606ZT/E)
Unit Name : DSP Unit
L
L
362
363
Inductor
Inductor
LCTB1R0K2125
LCTB120K2125
L 371 Inductor LCTB1R0K2125
L 372 Inductor LCTB1R0K2125
MISCELLANEOUS
L 373 Inductor LCTB120K2125
IC 101 IC AK5350-VF L 381 Inductor LCTB1R0K2125
IC 121 IC TC74HCU04AF L 401 Inductor LCTB1R0K2125
IC 131 IC PD2055A L 402 Inductor LCTB1R0K2125
IC 141 IC PD2055A L 403 Inductor LCTB1R0K2125
IC 151 IC TC74HC74AF
L 404 Inductor LCTB1R0K2125
IC 301 IC PD5584B L 421 Inductor LCTB1R0K2125
IC 331 IC S-80740AND4I L 422 Inductor LCTB1R0K2125
IC 341 IC CA0008AM L 424 Inductor LCTB1R0K2125
IC 351 IC SM5875AMP X 121 Radiator 22.5792MHz CSS1406
IC 361 IC SM5875AMP
X 301 Ceramic Resonator 6.290MHz CSS1305
IC 371 IC SM5875AMP X 351 Crystal Resonator 16.9344MHz CSS1052
IC 401 IC PMJ003A VR 601 Semi-fixed 10k(B) CCP1019
IC 421 IC SN761027DL VR 602 Semi-fixed 10k(B) CCP1206
IC 451 IC NJM2068MD MIK 601 Microphone CPM1011
IC 461 IC NJM2068MD
IC 471 IC NJM2068MD RESISTORS
IC 601 IC PM2002
Q 601 Transistor 2SK209 R 52 RS1/10S2R2J
Q 602 Chip Transistor 2SC2712 R 101 RS1/10S331J
D 481 Diode HZU4R3(B3) R 102 RS1/10S331J
R 103 RS1/10S331J
D 601 Chip Diode MA151K R 104 RS1/10S331J
D 602 Chip Diode MA151K
D 603 Chip Diode MA151K R 105 RS1/10S221J
L 51 Chip-Inductor LCTA2R2J3225 R 106 RS1/10S221J
L 52 Inductor LCTB1R0K3216 R 107 RS1/10S221J
R 108 RS1/10S221J
L 53 Chip-Inductor LCTA2R2J3225 R 121 RS1/10S105J
L 101 Inductor LCTB1R0K2125
L 102 Inductor LCTB1R0K2125 R 123 RS1/10S102J
L 103 Inductor LCTB1R0K2125 R 131 RS1/10S221J
L 104 Inductor LCTB1R0K2125 R 132 RS1/10S221J
R 133 RS1/10S102J
L 105 Inductor LCTB4R7K2125 R 141 RS1/10S221J
L 106 Inductor LCTB120K2125
L 107 Inductor LCTB1R0K2125 R 142 RS1/10S221J
L 121 Inductor LCTBR82K2125 R 143 RS1/10S102J
L 122 Inductor CTF1305 R 151 RS1/10S102J
R 152 RS1/10S102J
L 131 Inductor LCTBR82K2125 R 301 RS1/10S473J
L 141 Inductor LCTBR82K2125
L 151 Inductor LCTB1R0K2125 R 302 1k CCN1120
L 301 Inductor LCTB1R0K2125 R 303 RA3C102J
L 302 Inductor LCTB1R0K2125 R 304 RS1/10S102J
R 305 RS1/10S102J
L 341 Inductor CTF1305 R 306 RS1/10S102J
L 342 Inductor CTF1305
L 351 Inductor LCTB1R0K2125 R 307 RS1/10S102J
L 352 Inductor LCTB1R0K2125 R 308 RA3C473J
L 353 Inductor LCTB120K2125 R 309 RS1/10S102J
R 310 RS1/10S102J
R 312 (GM-8506ZT/E) RS1/10S473J
20
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
=====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No.
--- ------ ------------------------------------------ ------------------------- --- ------ ------------------------------------------ -------------------------
R 313 (GM-8606ZT/E) RS1/10S473J R 608 RS1/10S472J
R 314 RS1/10S102J R 609 RS1/10S682J
R 315 RS1/10S102J R 610 RS1/10S103J
R 316 RS1/10S102J R 611 RS1/10S154J
R 317 RS1/10S473J