Pioneer KEX-M8906ZT, KEX-M8806ZT Service Manual
ORDER NO.
CRT2546
PUB. NO. CRT2546
AUDIO SYSTEM
HEAD UNIT
Manufactured for TOYOTA
by PIONEER CORPORATION
VEHICLE DESTINATION PRODUCED AFTER TOYOTA PART No. ID No. PIONEER MODEL No.
LEXUS LX470 EUROPE August 2000 86120-60410 P3726 KEX-M8806ZT/EW
LEXUS LX470 EUROPE August 2000 86120-60410 P3726 KEX-M8806ZT-91/EW
LEXUS LX470 EUROPE August 2000 86120-60400 P3727 KEX-M8906ZT/EW
LEXUS LX470 EUROPE August 2000 86120-60400 P3727 KEX-M8906ZT-91/EW
LX470
2
KEX-M8806ZT,M8806ZT-91,M8906ZT,M8906ZT-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-M8806ZT/EW and KEX-M8906ZT/EW have adopted AVC-LAN.
KEX-M8806ZT/EW
- Supplementary model is identical to the original except for the addition of following items.
Description Part No.
KEX-M8806ZT-91/EW KEX-M8906ZT-91/EW
Polyethylene Bag CEG1106 CEG1106
Carton CHA1721 CHA1721
Contain Box CHL4141 CHL4142
Cover CEG1045 CEG1045
KEX-M8906ZT/EW
ID No.P3726
ID No.P3727
- 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 ...10
4. PCB CONNECTION DIAGRAM ................................26
5. ELECTRICAL PARTS LIST ........................................38
6. ADJUSTMENT..........................................................45
7. GENERAL INFORMATION .......................................49
7.1 DIAGNOSIS .......................................................49
7.1.1 DISASSEMBLY ........................................49
7.1.2 CONNECTOR FUNCTION DESCRIPTION ..50
7.1.3 TROUBLESHOOTING................................51
7.2 IC ........................................................................52
7.3 EXPLANATION..................................................55
7.3.1 SYSTEM BLOCK DIAGRAM ...................55
7.3.2 OPERATIONAL FLOW CHART ................56
8. OPERATIONS AND SPECIFICATIONS.....................57
3
KEX-M8806ZT,M8806ZT-91,M8906ZT,M8906ZT-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.
4
KEX-M8806ZT,M8806ZT-91,M8906ZT,M8906ZT-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
27
21
30
31
21
21
21
21
50
46
46
36
41
37
35
49
49
43
23
26
39
40
24
26
43
33
34
32
22
38
25
33
34
32
48
47
29
28
2. EXPLODED VIEWS AND PARTS LIST
2.1 EXTERIOR(KEX-M8806ZT)
5
KEX-M8806ZT,M8806ZT-91,M8906ZT,M8906ZT-91
Mark No. Description Part No.
Mark No. Description Part No.
1 Screw BMZ26P050FMC
2 Screw BMZ30P050FMC
3 Case CNB2590
4 Insulator CNM6654
5 Cushion CNM6934
6 Main Unit CWM7246
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) CKX1041
16 Holder CNC8711
17 Holder CNC8712
18 FM/AM Tuner Unit CWE1610
19 Holder CNC6122
20 Chassis Unit CXB5297
21 Screw BPZ26P100FMC
22 Button(EJECT) CAC6642
23 Button(CH,PROG,DISC) CAC6771
24 Button(SEEK,TRACK) CAC6772
25 Button(TA) CAC6711
26 Lighting Conductor CNV6144
27 Rubber CNV6145
28 Lighting Conductor CNV6500
29 Holder CNV6502
30 Keyboard Unit CWM7103
31 Socket(CN901) CKS3555
32 Knob Assy CXB5296
* 33 Knob CAA1500
34 Spring CBL-108
35 Button(AM) CAC5252
36 Button(TAPE) CAC5254
37 Button(FM) CAC5253
38 Grille Unit CXB6093
39 Door CAT2167
40 Spring CBH1371
41 Button(DISC) CAC6186
42
Cassette Mechanism ModuleEXK3885
43 Screw IMS26P050FMC
44 Transistor(Q331) 2SB1185
45 Transistor(Q521) 2SB1185
46 Shield CNC9047
47 Holder CNV6503
48 Lighting Conductor CNV6501
49 Holder Unit CXB2765
50 Lighting Conductor CNV6143
-
EXTERIOR SECTION PARTS LIST(KEX-M8806ZT)
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.
6
KEX-M8806ZT,M8806ZT-91,M8906ZT,M8906ZT-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
27
21
30
31
21
21
21
21
50
46
46
36
41
37
35
49
49
43
23
26
39
40
24
26
43
33
34
32
22
38
25
33
34
32
48
47
29
28
2.2 EXTERIOR(KEX-M8906ZT)
7
KEX-M8806ZT,M8806ZT-91,M8906ZT,M8906ZT-91
Mark No. Description Part No.
Mark No. Description Part No.
1 Screw BMZ26P050FMC
2 Screw BMZ30P050FMC
3 Case CNB2590
4 Insulator CNM6654
5 Cushion CNM6934
6 Main Unit CWM7246
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) CKX1041
16 Holder CNC8711
17 Holder CNC8712
18 FM/AM Tuner Unit CWE1610
19 Holder CNC6122
20 Chassis Unit CXB5297
21 Screw BPZ26P100FMC
22 Button(TA) CAC6711
23 Button(SEEK,TRACK) CAC6772
24 Button(CH,PROG,DISC) CAC6771
25 Button(EJECT) CAC6642
26 Lighting Conductor CNV6144
27 Rubber CNV6145
28 Lighting Conductor CNV6500
29 Holder CNV6502
30 Keyboard Unit CWM7247
31 Socket(CN901) CKS3555
32 Knob Assy CXB5296
* 33 Knob CAA1500
34 Spring CBL-108
35 Button(DISC) CAC6186
36 Button(FM) CAC5253
37 Button(TAPE) CAC5254
38 Grille Unit CXB6094
39 Door CAT2168
40 Spring CBH1371
41 Button(AM) CAC5252
42
Cassette Mechanism ModuleEXK3885
43 Screw IMS26P050FMC
44 Transistor(Q331) 2SB1185
45 Transistor(Q521) 2SB1185
46 Shield CNC9047
47 Holder CNV6503
48 Lighting Conductor CNV6501
49 Holder Unit CXB2765
50 Lighting Conductor CNV6143
-
EXTERIOR SECTION PARTS LIST(KEX-M8906ZT)
8
KEX-M8806ZT,M8806ZT-91,M8906ZT,M8906ZT-91
2.3 CASSETTE MECHANISM MODULE
9
KEX-M8806ZT,M8806ZT-91,M8906ZT,M8906ZT-91
1 Screw BSZ20P040FMC
2 Washer CBF1037
3 Washer CBF1038
4 Washer CBG1003
5 Deck Unit EWM1027
6 Screw(M2x5) EBA1028
7 Screw(M2x2.5) EBA1037
8 Spring EBH1531
9 Spring EBH1589
10 Connector(CN251) CKS3540
11 Spring EBH1515
12 Spring EBH1587
13 Spring EBH1517
14 Spring EBH1518
15 Spring EBH1519
16 Spring EBH1537
17 Cord EDD1027
18 Photo-interrupter
(EGN2,3) EGN1006
19 Photo-interrupter(EGN1) EGN1005
20 Roller ENR1031
21 Shaft ELA1362
22 Roller ELA1348
23 Arm ENC1490
24 Arm ENC1397
25 Guide ENC1519
26 Holder ENC1516
27 Lever ENC1448
28 Arm ENC1488
29 Roller ENR1023
30 Belt ENT1027
31 Gear ENV1347
32 Collar ENV1508
33 Gear ENV1350
34 Flywheel ENV1500
35 Worm Gear ENV1439
36 Worm Wheel ENV1440
37 Gear ENR1037
38 Lever ENV1533
39 Arm ENV1525
40 Gathering PCB ENX1037
41 Gathering PCB ENX1060
42 Switch(S1)(S2) ESG1004
43 Motor Unit(M2)(SUB) EXA1382
44 Chassis Unit EXA1559
45 Tube ENM1039
46 Roller ENR1027
47 Reel Unit EXA1560
48 Head Base Unit EXA1434
49 Lever Unit EXA1578
50 Gear Unit EXA1545
51 Frame Unit EXA1476
52 Lever Unit EXA1439
53 Head Assy(HD1) EXA1594
54 Motor Unit(M1)(MAIN) EXA1499
55 Washer HBF-179
56 Screw JGZ20P025FNI
57 Spring EBH1545
58 Washer YE20FUC
59 Pinch Roller Unit EXA1533
60 Pinch Roller Unit EXA1532
61 Capacitor(C1) CEAL4R7M35
Mark No. Description Part No. Mark No. Description Part No.
- CASSETTE MECHANISM MODULE SECTION PARTS LIST
10
KEX-M8806ZT,M8806ZT-91,M8906ZT,M8906ZT-91
A
1
234
B
C
D
12
34
Q3
L2 D5
L4 D7
25
26
Q201
AM RF
AM
OSC
FM
OSC
D231
CF52
CF51
T31
Q31
CF232
CF230
23
25
PA4026A
IC1
CF53
L52
PA4024A
IC2
AM
CN201
ANT
FMTV
AMTV
VCO
AMIFC
FMB
AMB
TUNB
19 20
17
15 21
14
13
11
6
2
IC201
PM2007A
PLL
XIN
XOUT
PDI
PCK
PDO
PCE
29
25
COMP
9
5
4
IC204
PM4006B
11
12
IC205
NJM2903M
RDS DECODER
CN251
CN252
CN253
IC251
HA12216F
TAPE EQUALIZER
MECHANISM DRIVER
IC351
PA2020A
Q271
B.U
BU
M
SUB
MOTOR
M
MAIN
MOTOR
10
+B
TAPE-L
MTL
MTL
VR301
VREF
6
22
14
17
2
51
53
17
7
18
19
5
2
NR
Q351
Q352
1
9
8
STBY
LOAD
LOAD
SWITCH
MODE
SENSE
FWD
SENSE
REV
SENSE
1
4
5
4
3
20
FWD
LcH
REV
LcH
23
8
1
64
23
8
1
64
41
910
34
63836
32
14 15 17 19
30
31
28
47
1
2
19
40 7
43
Lch
FMSL
AMSL
STO/AMDET
ST
COMP
FMSD
PNS
S-80736AN-D0
IC602
2
1
RESET
VDD
Q528
Q530
Q
Q205
HA12181FP
IC203
AM NOISE
CANCELLER
3AM-L
9
16
Q703
MUTE
FM-L
BU
CN701
4
3
20
19
6
20
18
2
3
1
57K
25
57K
13
15
12
RESET
AUD+B
TAPE-L
Q201
SL
51
DSSILL
XIN
XOUT
SYSTEM CO
IC60
PDI
PCK
PDO
PCE
ST
SD
SL
SD
95
90
ST
89
38
37
A
MAIN UNIT
FM/AM TUNER UNIT
B
C
DECK UNIT
D
PCB UNIT
E
REEL PCB
7
9
18
10
3
PD560
SWITCH
70µs
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
KEX-M8806ZT,M8806ZT-91,M8906ZT,M8906ZT-91
5
6
7
8
A
B
C
D
5
6
7
8
11
Q528
Q530
Q527
Q529
Q531
BU
Q521
Q522
Q525
Q526
ILLUMINATION
DIMMER
CONTROL
ACC
BU
Q501
Q323
5V
REGULATOR
VDD5V
VDD
Q332
Q331
AUD+B
TUNB
BU
8V
REGULATOR
Q553
VDD SWITCH
VDD
SYSPW
Q337-1
Q336
Q337-2
Q335
Q302
ASEN
Q301
BSEN
Q303
ISEN
BU
Q358
MUTE CONTROL
Q755
Q756
Q753
Q603
PML003AM
E-VOL
IC701
RL
Q205
P
9
Q703
Q701
AM-L
2
11
KEY
MATRIX
20
5
EJECT
TAPE-L
FMMT
FMMT
38
IC601
CE
SL
SD
95
90
ST
89
AMPW
AMPW
44
FMPW
43
AUD+B
73
75
23
ASEN
BSEN
ISEN
HA12187FP
IC681
AVC LAN
6
5
TX+
TX-
50
SYSMUTE
AMPMUT
IPPW
8
1
2
TX
RX
AMPMUT
RX
TX
IPPW
22
30
29
49
CN301
CN302
BU
ACC
ANT
MUTE
ILL+
+B
ACC
ILL-
FMPW
AMB
FMB
Q335
Q336
F
KEYBOARD UNIT
PD5600B
14322
POWER
VOLGND
ENC1M
ENC2P
CN901
24
21
4
15
CN651
KD1
POWER
ENC1M
POWER
53
54
55
ENC1P
ENC2M
ENC1P
KD1
KST2
21
10
13 8
17
KST2
ENC1M
ENC1P
ENC2M
ENC2P
12
3
22
KST259KD1
67
ENC2M86ENC2P
87
FM-L
4
3
MUTE CONTROL
Q357
KEX-M8806ZT *A: S901 POWER-VOL
*B: S902 TUNE
KEX-M8906ZT *A: S902 POWER-VOL
*B: S901 TUNE
*A
*B
KEX-M8806ZT : S904
KEX-M8906ZT : S903
12
KEX-M8806ZT,M8806ZT-91,M8906ZT,M8906ZT-91
A
1
234
B
C
D
12
34
3.2 MAIN UNIT(GUIDE PAGE)
Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL PARTS
LIST”.
A
CASSETTE
MECHANISM MODULE
C
D E
E-VOL
FM MUTE
RBDS DECODER
PLL
B
A
MAIN UNIT
FM:-26dBs(400Hz,30%)
AM:-16dBs(400Hz,30%)
TAPE:- 8dBs
FM:-32.5dBs
AM:-23.5dBs
TAPE:-14.5dBs
AUX :-11.5dBs
AM
FM
AM
AM
AM
AM
AM
FM
AM
FM
FM
AM
F
CN901
A-a
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
KEX-M8806ZT,M8806ZT-91,M8906ZT,M8906ZT-91
5
6
7
8
A
B
C
D
5
6
7
8
13
A
SYSTEM
CONTROLLER
5V REGULATOR
AUDIO 8V REGULATOR
BU ACC ILL SENSE
BU MUTE
ILL 8V REGULATOR
ILL DIMMER CONTROL
ANT CONTROL
AMP CONTROL
MUTE
BEEP
AVC LAN
RESET
SYSTEM MUTE
FM:-15dBs
AM:-15dBs
TAPE:-6dBs
AUX :+2.2dBs
A-b
14
KEX-M8806ZT,M8806ZT-91,M8906ZT,M8906ZT-91
A
1
234
B
C
D
12
34
A-a
A-a
A-b
SYSTEM
CONTROLLER
PLL
B
A
MAIN UNIT
FM:-26dBs(400Hz,30%)
AM:-16dBs(400Hz,30%)
AM
FM
F
CN901
1
2
3
15
KEX-M8806ZT,M8806ZT-91,M8906ZT,M8906ZT-91
5
6
7
8
A
B
C
D
5
6
7
8
A-a
A-a
A-b
CASSETTE
MECHANISM MODULE
C
D E
E-VOL
FM MUTE
RBDS DECODER
TAPE:- 8dBs
FM:-32.5dBs
AM:-23.5dBs
TAPE:-14.5dBs
AUX :-11.5dBs
AM
AM
AM
AM
AM
FM
AM
FM
FM
AM
4
5
6
7
16
KEX-M8806ZT,M8806ZT-91,M8906ZT,M8906ZT-91
A
1
234
B
C
D
12
34
A-a
A-b
A-b
5V REGULATOR
ILL 8V REGULATOR
ILL DIMMER CONTROL
ANT CONTROL
AMP CONTROL
MUTE
BEEP
AVC LAN
1
2
3
17
KEX-M8806ZT,M8806ZT-91,M8906ZT,M8906ZT-91
5
6
7
8
A
B
C
D
5
6
7
8
A-b
A-a
A-b
5V REGULATOR
AUDIO 8V REGULATOR
BU ACC ILL SENSE
BU MUTE
RESET
SYSTEM MUTE
FM:-15dBs
AM:-15dBs
TAPE:-6dBs
AUX :+2.2dBs
4
5
6
7
18
KEX-M8806ZT,M8806ZT-91,M8906ZT,M8906ZT-91
A
1
234
B
C
D
12
34
3.3 FM/AM TUNER UNIT
B
B
A
FM/AM TUNER UNIT
PA4023B
IC1
Loading...