Pioneer GS300 User manual

ORDER NO.
CRT2497
PUB. NO. CRT2497
AUDIO SYSTEM
POWER AMPLIFIER
Manufactured for TOYOTA
by PIONEER CORPORATION
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
GS300,430
Service
Manual

2
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
GM-8506ZT/E GM-8606ZT/E
CONTENTS
1. SAFETY INFORMATION............................................2
2. EXPLODED VIEWS AND PARTS LIST ......................3
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ....5
4. PCB CONNECTION DIAGRAM................................12
5. ELECTRICAL PARTS LIST........................................20
6. ADJUSTMENT.........................................................25
7. GENERAL INFORMATION.......................................29
7.1 DIAGNOSIS .......................................................29
7.1.1 DISASSEMBLY.........................................29
7.1.2 CONNECTOR FUNCTION DESCRIPTION ......30
7.2 IC ........................................................................31
7.3EXPLANATION...................................................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.
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

1 Screw BMZ30P060FMC
2 Screw BMZ50P060FMC
3 Screw(M3x5) CBA1327
4 Chassis CNA1852
5 Case CNB2102
6 Shield CNC6809
7 Shield CNC6810
8 Bracket CNC6813
9 Bracket CNC6811
10 Insulator CNM5537
11 Heat Sink CNR1432
12 Amp Unit CWM6207
13 DSP Unit CWM7243
14 Screw IMS30P060FMC
15 Screw BMZ30P060FMC
16 Screw(M3x6) CBA1393
17 Bracket CNC6807
18 Holder CNC6808
19 Connector(CN901) CKM1222
20 Connector(CN902) CKM1244
21 Connector(CN903) CKM1245
22 Plug(CN905) CKS3631
23 Plug(CN906) CKS3631
24 IC(IC901) NJM7805FA
25 IC(IC801) TA8221AH1
26 IC(IC821) PAL001A
27 IC(IC851) TA8225H-LF1
28 Socket(CN51) CKS3632
29 Socket(CN52) CKS3632
* 30 Seal CNM5381
3
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
2. EXPLODED VIEWS AND PARTS LIST
2.1 EXTERIOR (GM-8506ZT/E)
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.
3
11 27
26
25
24
15
5
1
4
1
18
22
23
12
16
19
20
21
1
17
6
7
1
28
29
13
10
1
14
1
2
9
2
8
30
-EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.

4
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
1 Screw BMZ30P060FMC
2 Screw BMZ50P060FMC
3 Screw(M3x5) CBA1327
4 Chassis CNA1852
5 Case CNB2102
6 Shield CNC6809
7 Shield CNC6810
8 Bracket CNC6813
9 Bracket CNC6812
10 Insulator CNM5537
11 Heat Sink CNR1432
12 Amp Unit CWM6208
13 DSP Unit CWM7245
14 Screw IMS30P060FMC
15 Screw BMZ30P060FMC
16 Screw(M3x6) CBA1393
17 Bracket CNC6807
18 Holder CNC6808
19 Connector(CN901) CKM1222
20 Connector(CN902) CKM1244
21 Connector(CN903) CKM1245
22 Plug(CN905) CKS3631
23 Plug(CN906) CKS3631
24 IC(IC901) NJM7805FA
25 IC(IC801) TA8221AH1
26 IC(IC821) PAL001A
27 IC(IC851) TA8225H-LF1
28 Socket(CN51) CKS3632
29 Socket(CN52) CKS3632
* 30 Seal CNM5381
-EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
3
11 27
26
25
24
15
5
18
22
23
12
16
19
20
21
1
17
6
7
1
28
29
13
10
1
14
1
8
1
4
1
2
9
2
30
2.2 EXTERIOR (GM-8606ZT/E)

5
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
1234
A
B
C
D
1234
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
AB
DSP UNIT AMP UNIT

6
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
A
1234
B
C
D
1234
3.2 SCHEMATIC DIAGRAM
Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL
PARTS LIST”.
TAPE: -1.05dBs
CD: +6.95dBs
TUNER(EW): -9.05dBs
TUNER(UC):-14.05dBs TAPE: -6.85dBs
4.9V
5.0V
4.9V
2.3V
4.9V
4.9V
4.9V
7.9V
7.5V
0.4V
1.0V
4.1V
3.4V
3.0V
3.0V
3.0V
3.0V
3.0V
3.4V
7.8V
7.9V
3.5V 3.5V
3.5V
3.5V
3.5V
3.5V
7.9V
5.0V
2.5V
5.0V
3.8V
3.8V
3.8V
7.9V
A-a A-b
A-a A-b
A-b
A-a
Large size
SCH diagram
Guide page
Detailed page
A
A-a
B

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.
ADSP UNIT
BAMP UNIT
TAPE: +0.2dBs
CD: +8.2dBs
TUNER(EW): -7.8dBs
TUNER(UC):-12.8dBs
TAPE: +25.15dBs
TAPE: -10.05dBs
CD: -3.55dBs
TAPE: -12.35dBs
CD: -5.85dBs
13.2V
3.8V 5.0V
3.8V 7.9V
7.6V
1.2V
1.8V
13.1V 13.2V
4.1V
13.2V
0.3mH
12.7V
13.2V
7.9V
3.8V
3.8V
3.8V
3.8V
3.8V
2.5V
2.5V
2.5V
2.5V
3.0V
2.5V
2.5V
4.9V
4.9V
7.9V
2.5V
4.9V
4.3V
4.3V
4.3V
4.3V
4.3V
4.3V
4.9V
2.5V
4.9V
2.5V
4.9V
2.5V
4.9V
4.3V 7.9V
4.3V
4.3V
4.3V
4.3V
7.9V
5.0V
4.9V
4.9V
7
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
5678
A
B
C
D
5678
A-b
AB

8
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
A
1234
B
C
D
1234
4.9V
5.0V
4.9V
2.3V 4.9V
4.9V
4.9V
7.9V
7.5V
0.4V
1.0V
4.1V
3.4V
3.0V 3.0V 3.0V 3.0V
3.0V
3.4V 7.8V
7.9V
3.5V 3.5V
3.5V
3.5V
3.5V
3.5V
A-a A-b
A-a
1
2
3

9
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
5678
A
B
C
D
5678
A-a A-b
TAPE: -1.05dBs
CD: +6.95dBs
TUNER(EW): -9.05dBs
TUNER(UC):-14.05dBs TAPE: -6.85dBs
7.9V
3.5V 3.5V
3.5V
3.5V
7.9V
5.0V
2.5V
5.0V
3.8V
3.8V
3.8V
7.9V
A-a
B
4
5
6
7

10
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
A
1234
B
C
D
1234
A-a A-b
ADSP UNIT
TAPE: -10.05dBs
CD: -3.55dBs
TAPE: -12.35dBs
CD: -5.85dBs
7.9V
3.8V
3.8V
3.8V
3.8V
3.8V
2.5V
2.5V
2.5V
2.5V
3.0V
2.5V
2.5V
4.9V
4.9V
7.9V
2.5V
4.9V
4.3V
4.3V
4.3V
4.3V
4.3V
4.3V
4.9V
2.5V
4.9V
2.5V
4.9V
2.5V
4.9V
4.3V 7.9V
4.3V
4.3V
4.3V
4.3V
7.9V
5.0V
4.9V
4.9V
A-b
1
2
3

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.
BAMP UNIT
TAPE: +0.2dBs
CD: +8.2dBs
TUNER(EW): -7.8dBs
TUNER(UC):-12.8dBs
TAPE: +25.15dBs
13.2V
3.8V 5.0V
3.8V 7.9V
7.6V
1.2V
1.8V
13.1V 13.2V
4.1V
13.2V
0.3mH
12.7V
13.2V
7.9
3.8
3.8
3.8
3
3.8
2.5
2.5
3.0
4.9
7.9V
11
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
5678
A
B
C
D
5678
A-a A-b
A-b
B
4
5
6
7

12
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
A
1234
B
C
D
1234
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 dia-
gram.
Capacitor
Connector
P.C.Board Chip Part
SIDE A
SIDE B
2. Viewpoint of PCB diagrams
DSP UNIT
CN906
A
AB

13
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
5678
A
B
C
D
5678
SIDE A
CN905
A
B

14
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
A
1234
B
C
D
1234
DSP UNIT
A
A

15
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
5678
A
B
C
D
5678
13
2
SIDE B
A

16
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
A
1234
B
C
D
1234
CN51
AMP UNIT
B
B
A
4.2 AMP UNIT

17
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
5678
A
B
C
D
5678
SIDE A
CN52
B
A

18
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
A
1234
B
C
D
1234
AMP UNIT
B
B

19
GM-8506ZT,8506ZT-91,8606ZT,8606ZT-91
5678
A
B
C
D
5678
SIDE B
B

Unit Number : CWM7243(GM-8506ZT/E)
Unit Number : CWM7245(GM-8606ZT/E)
Unit Name : DSP Unit
MISCELLANEOUS
IC 101 IC AK5350-VF
IC 121 IC TC74HCU04AF
IC 131 IC PD2055A
IC 141 IC PD2055A
IC 151 IC TC74HC74AF
IC 301 IC PD5584B
IC 331 IC S-80740AND4I
IC 341 IC CA0008AM
IC 351 IC SM5875AMP
IC 361 IC SM5875AMP
IC 371 IC SM5875AMP
IC 401 IC PMJ003A
IC 421 IC SN761027DL
IC 451 IC NJM2068MD
IC 461 IC NJM2068MD
IC 471 IC NJM2068MD
IC 601 IC PM2002
Q 601 Transistor 2SK209
Q 602 Chip Transistor 2SC2712
D 481 Diode HZU4R3(B3)
D 601 Chip Diode MA151K
D 602 Chip Diode MA151K
D 603 Chip Diode MA151K
L 51 Chip-Inductor LCTA2R2J3225
L 52 Inductor LCTB1R0K3216
L 53 Chip-Inductor LCTA2R2J3225
L 101 Inductor LCTB1R0K2125
L 102 Inductor LCTB1R0K2125
L 103 Inductor LCTB1R0K2125
L 104 Inductor LCTB1R0K2125
L 105 Inductor LCTB4R7K2125
L 106 Inductor LCTB120K2125
L 107 Inductor LCTB1R0K2125
L 121 Inductor LCTBR82K2125
L 122 Inductor CTF1305
L 131 Inductor LCTBR82K2125
L 141 Inductor LCTBR82K2125
L 151 Inductor LCTB1R0K2125
L 301 Inductor LCTB1R0K2125
L 302 Inductor LCTB1R0K2125
L 341 Inductor CTF1305
L 342 Inductor CTF1305
L 351 Inductor LCTB1R0K2125
L 352 Inductor LCTB1R0K2125
L 353 Inductor LCTB120K2125
L 361 Inductor LCTB1R0K2125
L 362 Inductor LCTB1R0K2125
L 363 Inductor LCTB120K2125
L 371 Inductor LCTB1R0K2125
L 372 Inductor LCTB1R0K2125
L 373 Inductor LCTB120K2125
L 381 Inductor LCTB1R0K2125
L 401 Inductor LCTB1R0K2125
L 402 Inductor LCTB1R0K2125
L 403 Inductor LCTB1R0K2125
L 404 Inductor LCTB1R0K2125
L 421 Inductor LCTB1R0K2125
L 422 Inductor LCTB1R0K2125
L 424 Inductor LCTB1R0K2125
X 121 Radiator 22.5792MHz CSS1406
X 301 Ceramic Resonator 6.290MHz CSS1305
X 351 Crystal Resonator 16.9344MHz CSS1052
VR 601 Semi-fixed 10kΩ(B) CCP1019
VR 602 Semi-fixed 10kΩ(B) CCP1206
MIK 601 Microphone CPM1011
RESISTORS
R 52 RS1/10S2R2J
R 101 RS1/10S331J
R 102 RS1/10S331J
R 103 RS1/10S331J
R 104 RS1/10S331J
R 105 RS1/10S221J
R 106 RS1/10S221J
R 107 RS1/10S221J
R 108 RS1/10S221J
R 121 RS1/10S105J
R 123 RS1/10S102J
R 131 RS1/10S221J
R 132 RS1/10S221J
R 133 RS1/10S102J
R 141 RS1/10S221J
R 142 RS1/10S221J
R 143 RS1/10S102J
R 151 RS1/10S102J
R 152 RS1/10S102J
R 301 RS1/10S473J
R 302 1kΩCCN1120
R 303 RA3C102J
R 304 RS1/10S102J
R 305 RS1/10S102J
R 306 RS1/10S102J
R 307 RS1/10S102J
R 308 RA3C473J
R 309 RS1/10S102J
R 310 RS1/10S102J
R 312 (GM-8506ZT/E) RS1/10S473J
20
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.
--- ------ ------------------------------------------ -------------------------
A