Pioneer FX-MG8506ZT User manual

ORDER NO.
CRT2548
PUB. NO. CRT2548
AUDIO SYSTEM
HEAD UNIT
Manufactured for TOYOTA
by PIONEER CORPORATION
VEHICLE DESTINATION PRODUCED AFTER TOYOTA PART No. ID No. PIONEER MODEL No.
LEXUS LS430 EUROPE August 2000 86120-50610 P3900 FX-MG8506ZT/EW
LEXUS LS430 EUROPE August 2000 86120-50770 P3900 FX-MG8506ZT-91/EW
LEXUS LS430 UNITED KINGDOM August 2000 86120-50620 P3901 FX-MG8606ZT/EW
LEXUS LS430 UNITED KINGDOM August 2000 86120-50780 P3901 FX-MG8606ZT-91/EW
LS430
Service
Manual

2
FX-MG8506ZT,MG8506ZT-91,MG8606ZT,MG8606ZT-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.
FX-MG8506ZT/EW
-Supplementary model is identical to the original except for the addition of following items.
Description Part No.
FX-MG8506ZT-91/EW FX-MG8606ZT-91/EW
Polyethylene Bag CEG1026 CEG1026
Carton CHA4120 CHA4120
Contain Box CHL4120 CHL4121
Protector(TOP) CHP2319 CHP2319
Protector(BOTTOM) CHP2320 CHP2320
FX-MG8606ZT/EW
ID No.P3900 ID No.P3901
-This service manual should be used together with the following manual(s):
Model No. Order No. Mech. Module Remarks
CX-631 CRT1640 2L Cassette Mech. Module:Mech.Description, Disassembly
CX-890 CRT2376 G1 CD Mech. Module:Circuit Description, Mech.Description, Disassembly
CONTENTS
1. SAFETY INFORMATION ............................................4
2. EXPLODED VIEWS AND PARTS LIST.......................5
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ...16
4. PCB CONNECTION DIAGRAM ................................44
5. ELECTRICAL PARTS LIST ........................................66
6. ADJUSTMENT..........................................................72
7. GENERAL INFORMATION .......................................75
7.1 DIAGNOSIS.......................................................75
7.1.1 TEST MODE.............................................75
7.1.2 DIAGNOSIS MODE .................................80
7.1.3 DISASSEMBLY ........................................84
7.1.4 PCB LOCATIONS .....................................89
7.1.5 CONNECTOR FUNCTION DESCRIPTION ..90
7.2 IC........................................................................91
7.3 EXPLANATION..................................................96
7.3.1 SYSTEM BLOCK DIAGRAM ...................96
7.3.2 OPERATIONAL FLOW CHART................98
8. OPERATIONS AND SPECIFICATIONS.....................99

3
FX-MG8506ZT,MG8506ZT-91,MG8606ZT,MG8606ZT-91
-CD Player Service Precautions
1. For pickup unit(CXX1313) handling, please refer
to"Disassembly"(see page 84).
During replacement, handling precautions shall be
taken to prevent an electrostatic discharge(protection
by a short pin).
2. During disassembly, be sure to turn the power off
since an internal IC might be destroyed when a con-
nector is plugged or unplugged.
3. Please checking the grating after changing the ser-
vice pickup unit(see page 73).
-When the Repair is Complete
When the repair is complete, make the CD mechanism
ready for transportation
Bup On, Acc OFF
SEEK/TRACK UP+
DISC(CD)+Acc ON
Bup OFF, Acc OFF
Shift completion to the transportation mode.
Disc loading slot illumination : Lighting
Disc loading slot illumination : Blinking The mode is shifting to the transportation mode.

4
FX-MG8506ZT,MG8506ZT-91,MG8606ZT,MG8606ZT-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.
1. Safety Precautions for those who Service this Unit.
• When checking or adjusting the emitting power of the laser diode exercise caution in order to get safe, reliable
results.
Caution:
1. During repair or tests, minimum distance of 13cm from the focus lens must be kept.
2. During repair or tests, do not view laser beam for 10 seconds or longer.
2. A “CLASS 1 LASER PRODUCT” label is affixed to the
bottom of the player.
3. The triangular label is attached to the mechanism
unit holder.
4. Specifications of Laser Diode
Specifications of laser radiation fields to which human access is possible during service.
Wavelength = 800 nanometers
CLASS 1
LASER PRODUCT

FX-MG8506ZT,MG8506ZT-91,MG8606ZT,MG8606ZT-91
2. EXPLODED VIEWS AND PARTS LIST
2.1 EXTERIOR(FX-MG8506ZT/EW,FX-MG8506ZT-91/EW)
5
35
NOTE:
Please use the gray part shown in figure above cut-
ting off when you exchange the rubber(CNV5881)
for new parts.

6
FX-MG8506ZT,MG8506ZT-91,MG8606ZT,MG8606ZT-91

FX-MG8506ZT,MG8506ZT-91,MG8606ZT,MG8606ZT-91
1 Screw BMZ26P040FMC
2 Screw BMZ26P050FMC
3 Screw BMZ50P080FMC
(FX-MG8506ZT/EW)
4 Connector CDE6172
5 Case CNB2541
6 90468-04191 CNC9048
7 Cushion CNM6917
8 Guide CNV6044
9 Main Unit CWM6848
10 Screw BMZ30P060FMC
11 Screw(M3x6) CBA1393
12 Terminal(CN806) CKF1059
13 Connector(CN802) CKM1315
14 Connector(CN801) CKM1322
15 Plug(CN303) CKS-291
16 Connector(CN301) CKS3568
17 Connector(CN804) CKS3751
18 Connector(CN701) CKS3930
19 Holder CNC8163
20 Screw BPZ20P080FMC
21 Button(MODE) CAC5958
22 Button(EJECT) CAC5960
23 Button(SEEK) CAC6356
24 Button(CH) CAC6357
25 Button(TA) CAC6351
* 26 Lighting Conductor Unit CXB6916
27 Holder Unit CXB6898
28 Lighting Conductor CNV5683
29 Lighting Conductor Unit CXB6915
30 Holder CNV6039
31 Lighting Conductor Unit CXB6899
32 Keyboard Unit CWM6860
33 Connector(CN902) CKS3751
34 Connector(CN903) CKS4354
35 Rubber CNV5881
36 Knob Unit CXB3551
37 Grille Unit CXB6893
38 Chassis Unit CXB3549
39 Door CAT2103
40 Spring CBH2427
41 Screw BPZ20P080FMC
42 Button(LOAD) CAC5968
43 Button(EJECT) CAC5969
44 Connector CDE6293
45 Lighting Conductor CNV6638
46 SW Unit CWM6872
47 Connector(CN905) CKS4354
48 Grille Unit CXB6927
49 Screw BPZ20P080FMC
50 Door CAT2151
51 Washer CBF1037
52 Spring CBH2339
53 Gear CNV6116
54 Bracket Unit CXB5254
55 Screw IMS20P030FMC
56 86208-50010 CXB6031
(FX-MG8506ZT/EW)
57 86207-50010 CXB6032
(FX-MG8506ZT/EW)
58 Screw BMZ20P020FMC
59 Screw BMZ26P030FMC
60 Cassette Mechanism Module EXK3885
61 Transistor(Q809,811,812) 2SB1185
62 Screw(M2x2) CBA1250
63 Spring CBH2361
64 Spring CBH2365
65 Spring Unit CXB6850
66 Connector CDE6302
67 Chassis CNA2131
68 Holder CNC7477
69 Holder CNC7826
70 Holder CNC8160
71 Holder CNC8161
72 Holder CNC8162
73 Connector(CN803) CKM1065
74 Sheet CNM5981
75 Insulator CNM7141
76 Sheet CNM6318
77 Insulator CNM6410
78 Cushion CNM6927
79 PCB CNP5399
80 Damper CNV5120
81 Holder CNV5543
82 Screw IMS20P040FMC
83 Mechanism Assy(Service) CXX1430
84 Screw ISS26P050FMC
85 Screw ISS26P060FMC
* 86 Seal CNM5714
87 Rubber CNV6596
88 Spacer CNM7140
89 Spacer CNM7179
-EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
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.
7

8
FX-MG8506ZT,MG8506ZT-91,MG8606ZT,MG8606ZT-91
2.2 EXTERIOR(FX-MG8606ZT/EW,FX-MG8606ZT-91/EW)
35
NOTE:
Please use the gray part shown in figure above cut-
ting off when you exchange the rubber(CNV5881)
for new parts.

9
FX-MG8506ZT,MG8506ZT-91,MG8606ZT,MG8606ZT-91

10
FX-MG8506ZT,MG8506ZT-91,MG8606ZT,MG8606ZT-91
1 Screw BMZ26P040FMC
2 Screw BMZ26P050FMC
3 Screw BMZ50P080FMC
(FX-MG8606ZT/EW)
4 Connector CDE6172
5 Case CNB2541
6 90468-04191 CNC9048
7 Cushion CNM6917
8 Guide CNV6044
9 Main Unit CWM6849
10 Screw BMZ30P060FMC
11 Screw(M3x6) CBA1393
12 Terminal(CN806) CKF1059
13 Connector(CN802) CKM1315
14 Connector(CN801) CKM1322
15 Plug(CN303) CKS-291
16 Connector(CN301) CKS3568
17 Connector(CN804) CKS3751
18 Connector(CN701) CKS3930
19 Holder CNC8163
20 Screw BPZ20P080FMC
21 Button(MODE) CAC5958
22 Button(TA) CAC6351
23 Button(CH) CAC5961
24 Button(SEEK) CAC5962
25 Button(EJECT) CAC5960
* 26 Lighting Conductor Unit CXB6916
27 Holder Unit CXB6898
28 Lighting Conductor CNV5683
29 Lighting Conductor Unit CXB6915
30 Holder CNV6039
31 Lighting Conductor Unit CXB6899
32 Keyboard Unit CWM6859
33 Connector(CN902) CKS3751
34 Connector(CN903) CKS4354
35 Rubber CNV5881
36 Knob Unit CXB3551
37 Grille Unit CXB6891
38 Chassis Unit CXB3549
39 Door CAT2101
40 Spring CBH2427
41 Screw BPZ20P080FMC
42 Button(EJECT) CAC5969
43 Button(LOAD) CAC5968
44 Connector CDE6293
45 Lighting Conductor CNV6638
46 SW Unit CWM6872
47 Connector(CN905) CKS4354
48 Grille Unit CXB6927
49 Screw BPZ20P080FMC
50 Door CAT2151
51 Washer CBF1037
52 Spring CBH2339
53 Gear CNV6116
54 Bracket Unit CXB5254
55 Screw IMS20P030FMC
56 86208-50010 CXB6031
(FX-MG8606ZT/EW)
57 86207-50010 CXB6032
(FX-MG8606ZT/EW)
58 Screw BMZ20P020FMC
59 Screw BMZ26P030FMC
60 Cassette Mechanism Module EXK3885
61 Transistor(Q809,811,812) 2SB1185
62 Screw(M2x2) CBA1250
63 Spring CBH2361
64 Spring CBH2365
65 Spring Unit CXB6509
66 Connector CDE6302
67 Chassis CNA2131
68 Holder CNC7477
69 Holder CNC7826
70 Holder CNC8160
71 Holder CNC8161
72 Holder CNC8162
73 Connector(CN803) CKM1065
74 Sheet CNM5981
75 Insulator CNM6127
76 Sheet CNM6318
77 Insulator CNM6410
78 Cushion CNM6927
79 PCB CNP5399
80 Damper CNV5120
81 Holder CNV5543
82 Screw IMS20P040FMC
83 Mechanism Assy(Service) CXX1430
84 Screw ISS26P050FMC
85 Screw ISS26P060FMC
* 86 Seal CNM5714
87 Rubber CNV6596
88 Spacer CNM7140
89 Spacer CNM7179
-EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.