ORDER NO.
CRT2542
PUB. NO.
CRT2542
AUDIO SYSTEM
HEAD UNIT
Manufactured for TOYOTA
by PIONEER CORPORATION
VEHICLE
DESTINATION
PRODUCED AFTER
TOYOTA PART No.
ID No.
PIONEER MODEL No.
LEXUS GS430
U.S.A., CANADA
August 2000
86120-3A582
P1719
KEX-M8506ZT/UC
LEXUS GS430
U.S.A., CANADA
August 2000
86120-3A582
P1719
KEX-M8506ZT-91/UC
LEXUS GS430
U.S.A., CANADA
August 2000
86120-3A740
P1724
KEX-M9506ZT/UC
LEXUS GS430
U.S.A., CANADA
August 2000
86120-3A740
P1724
KEX-M9506ZT-91/UC
GS430
Service
Manual
2
KEX-M8506ZT,M8506ZT-91,M9506ZT,M9506ZT-91
- Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation.
"Dolby" and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation.
- These models do not provide the test mode for CD changers.
- KEX-M8506ZT/UC and KEX-M9506ZT/UC have adopted AVC-LAN.
KEX-M8506ZT/UC
- Supplementary model is identical to the original except for the addition of following items.
Description
Part No.
KEX-M8506ZT-91/UC KEX-M9506ZT-91/UC
Polyethylene Bag
CEG1106
CEG1106
Carton
CHA1721
CHA1721
Contain Box
CHL4162
CHL4165
Cover
CEG1045
CEG1045
KEX-M9506ZT/UC
ID No.P1719
ID No.P1724
- This service manual should be used together with the following manual(s):
Model
Order No.
Mech. Module
Remarks
CX-631
CRT1640
2L
Cassette Mech. Module:Mech.Description
CONTENTS
1. SAFETY INFORMATION ............................................3
2. EXPLODED VIEWS AND PARTS LIST .......................4
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM .....8
4. PCB CONNECTION DIAGRAM ................................22
5. ELECTRICAL PARTS LIST ........................................32
6. ADJUSTMENT..........................................................39
7. GENERAL INFORMATION .......................................43
7.1 DIAGNOSIS .......................................................43
7.1.1 DISASSEMBLY ........................................43
7.1.2 CONNECTOR FUNCTION DESCRIPTION ..44
7.1.3 TROUBLESHOOTING................................45
7.2 IC ........................................................................46
7.3 EXPLANATION..................................................49
7.3.1 SYSTEM BLOCK DIAGRAM ...................49
7.3.2 OPERATIONAL FLOW CHART ................50
8. OPERATIONS AND SPECIFICATIONS.....................51
3
KEX-M8506ZT,M8506ZT-91,M9506ZT,M9506ZT-91
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.
KEX-M8506ZT,M8506ZT-91,M9506ZT,M9506ZT-91
3
1
1
1
5
15
45
7
17
11
12
10
43
44
42
6
43
18
9
19
16
7
8
8
13
14
8
8
4
2
2
20
43
29
28
23
26
27
36
41
37
35
39
40
24
26
28
29
43
33
34
21
21
21
21
30
31
32
22
38
25
33
34
32
2. EXPLODED VIEWS AND PARTS LIST
2.1 EXTERIOR
4
5
KEX-M8506ZT,M8506ZT-91,M9506ZT,M9506ZT-91
- EXTERIOR SECTION PARTS LIST
Mark No. Description
Part No.
Mark No. Description
Part No.
1 Screw
BMZ26P050FMC
2 Screw
BMZ30P050FMC
3 Case
CNB2552
4 Insulator
CNM6654
5 Cushion
CNM6934
6 Main Unit
CWM7087
7 Screw
BMZ30P080FMC
8 Screw
BPZ30P060FSN
9 Terminal(CN202)
CKF1059
10 Terminal(CN303)
CKF1059
11 Connector(CN302)
CKM1065
12 Connector(CN301)
CKM1322
13 Plug(CN651)
CKS3542
14 Connector(CN701)
CKS3568
15 Antenna Jack(CN201)
CKX1024
16 Holder
CNC8711
17 Holder
CNC8712
18 FM/AM Tuner Unit
CWE1543
19 Holder
CNC6774
20 Chassis Unit
CXB5290
21 Screw
BPZ26P080FMC
22 Button(EJECT)
CAC4839
23 Button(CH-PROG-DISC)
CAC6549
24 Button(SEEK-TRACK)
CAC6550
25 Button(TRAF)
CAC6552
26 Lighting Conductor
CNV4806
27 Rubber
CNV4808
28 Lighting Conductor
CNV4868
29 Holder
CNV4899
30 Keyboard Unit
CWM7100
31 Socket(CN901)
CKS3555
32 Knob Assy
CXA9741
*
33 Knob
CAA1408
34 Spring
CBL-108
35 Button Assy(AM)
CXB1607
36 Button Assy(TAPE)
CXB1608
37 Button Assy(FM)
CXB1611
38 Grille Unit(M8506ZT)
CXB5289
Grille Unit(M9506ZT)
CXB5583
39 Door(M8506ZT)
CAT2128
Door(M9506ZT)
CAT2141
40 Spring
CBH1371
41 Button Assy(DISC)
CXB5504
42 Cassette Mechanism ModuleEXK3885
43 Screw
IMS26P050FMC
44 Transistor(Q331)
2SB1185
45 Transistor(Q521)
2SB1185
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.