KEX-M8106ZT
ORDER NO.
CRT2544
PUB. NO. CRT2544
AUDIO SYSTEM
HEAD UNIT
Manufactured for TOYOTA
by PIONEER CORPORATION
VEHICLE DESTINATION PRODUCED AFTER TOYOTA PART No. ID No. PIONEER MODEL No.
LEXUS RX300 U.S.A., CANADA August 2000 86120-48090 P1725 KEX-M8006ZT/UC
LEXUS RX300 U.S.A., CANADA August 2000 86120-48090 P1725 KEX-M8006ZT-91/UC
LEXUS RX300 EUROPE August 2000 86120-48100 P3730 KEX-M8106ZT/EW
LEXUS RX300 EUROPE August 2000 86120-48100 P3730 KEX-M8106ZT-91/EW
RX300
2
KEX-M8006ZT,M8006ZT-91,M8106ZT,M8106ZT-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.
- This service manual does not describe the CD test mode.
For the operations in the CD test mode, refer to the CD player's Service Manual.
- KEX-M8006ZT/UC and KEX-M8106ZT/EW have adopted AVC-LAN.
KEX-M8006ZT/UC
CONTENTS
1. SAFETY INFORMATION ............................................3
2. EXPLODED VIEWS AND PARTS LIST.......................4
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM .....8
4. PCB CONNECTION DIAGRAM ................................30
5. ELECTRICAL PARTS LIST ........................................40
6. ADJUSTMENT..........................................................51
7. GENERAL INFORMATION .......................................56
7.1 DIAGNOSIS .......................................................56
7.1.1 CONNECTOR FUNCTION DESCRIPTION ..56
7.1.2 TROUBLESHOOTING................................57
7.2 IC ........................................................................58
7.3 EXPLANATION ..................................................61
7.3.1 SYSTEM BLOCK DIAGRAM ...................61
7.3.2 OPERATION FLOW CHART.....................62
8. SPECIFICATIONS......................................................63
- Supplementary model is identical to the original except for the addition of following items.
Description Part No.
KEX-M8006ZT-91/UC KEX-M8106ZT-91/EW
Polyethylene Bag CEG-162 CEG-162
Cover CEG1045 CEG1045
Carton CHA1721 CHA1721
Contain Box CHL4111 CHL4112
KEX-M8106ZT/EW
ID No.P1725
ID No.P3730
- 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
3
KEX-M8006ZT,M8006ZT-91,M8106ZT,M8106ZT-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-M8006ZT,M8006ZT-91,M8106ZT,M8106ZT-91
A
B
2. EXPLODED VIEWS AND PARTS LIST
2.1 EXTERIOR
5
KEX-M8006ZT,M8006ZT-91,M8106ZT,M8106ZT-91
- EXTERIOR SECTION PARTS LIST
Mark No. Description Part No.
1 Screw BMZ26P050FMC
2 Screw BMZ30P050FMC
3 Cover CHW1830
4 Case CNB2621
5 Cloth CNM5798
6 Insulator CNM6654
7 Cushion CNM6934
8 Main Unit(KEX-M8006ZT) CWM7097
Main Unit(KEX-M8106ZT) CWM7098
9 Screw BMZ30P080FMC
10 Screw BPZ30P060FSN
11 Terminal(CN202) CKF1059
12 Terminal(CN303) CKF1059
13 Connector(CN302) CKM1065
14 Connector(CN301) CKM1322
15 Connector(CN701) CKS3568
16 Antenna Jack(CN201) CKX1024
(KEX-M8006ZT)
Antenna Jack(CN201) CKX1041
(KEX-M8106ZT)
17 Holder CNC8711
18 Holder CNC8712
19 FM/AM Tuner Unit CWE1543
(KEX-M8006ZT)
FM/AM Tuner Unit CWE1591
(KEX-M8106ZT)
20 Holder(KEX-M8006ZT) CNC6774
Holder(KEX-M8106ZT) CNC6122
21 Chassis Unit CXB5302
22
Cassette Mechanism ModuleEXK3885
23 Screw IMS26P050FMC
24 Transistor(Q331) 2SB1185
25 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.
6
KEX-M8006ZT,M8006ZT-91,M8106ZT,M8106ZT-91
E
C
D
2.3 CASSETTE MECHANISM MODULE
7
KEX-M8006ZT,M8006ZT-91,M8106ZT,M8106ZT-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
8
KEX-M8006ZT,M8006ZT-91,M8106ZT,M8106ZT-91
A
1
234
B
C
D
12
34
Q203
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
DIVER
IC202
LA1061M
AM
CN201
SUB
ANT
MAIN
ANT
FIX
COMP
FMTV
AMTV
VCO
AMIFC
FMB
AMB
TUNB
19 20
17
15 21
14
13
6
2
IC201
PM2007A
PLL
XIN
XOUT
PDI
PCK
PDO
PCE
29
25
COMP
9
5
4
IC204
PM4006B
11
12
IC205
NJM2903M
RBDS 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
AMIF
ST
COMP
FMSD
S-80736AN-D0
IC703
2
1
RESET
VDD
Q70
MUT
Q70
MUT
FM-L
AM-L
BU
CN701
4
3
20
20
18
2
3
1
57K
25
57K
13
15
12
RESET
Q706
88
TAPEMUTE
AUD+B
TAPE-L
Q201
SL
XIN
XOUT
SYST
PDI
PCK
PDO
PCE
1
5,6
13
ST
SD
38
37
A
MAIN UNIT
FM/AM TUNER UNIT
B
C
DECK UNIT
D
PCB UNIT
E
REEL PCB
7
9
18
10
3
SWITCH
70µs
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM(KEX-M8006ZT)
KEX-M8006ZT,M8006ZT-91,M8106ZT,M8106ZT-91
5
6
7
8
A
B
C
D
5
6
7
8
9
BU
Q323
5V
REGULATOR
VDD5V
VDD
Q332
Q331
AUD+B
TUNB
BU
8V
REGULATOR
Q608
VDD SWITCH
VDD
SYSPW
Q337-1
Q336
Q337-2
Q335
Q302
ASEN
Q301
BSEN
Q303
ISEN
BU
Q359
Q360
Q358
TUNB
AUD+B
TC74HC4066AF
IC781
ANALOG
SWITCH
NJM2068MD
IC703
NJM2068MD
IC702
Q709
Q603
Q607
UNBAL BAL
NJM2068MD
MIX AMP
IC701
10
8
L+
L-
11
9
6,12
ANSW
Q205
Q703
MUTE
Q705
MUTE
Q701
AM-L
TUNER-L
2
1
2
1
2
1
Q354
Q351
AMB
FMB
BU
ANT
TAPE-L
AMMT
FMMT
AMMT
FMMT
37
38
SYSTEM CONTROLLER
IC601
PDI
PCK
PDO
PCE
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
IPPW
8
1
2
TX
RX
RX
TX
IPPW
ANSW
22
30
29
100
CN301
CN302
BU
ACC
MUTE
ILL+
+B
ACC
FMPW
AMB
FMB
Q335
Q336
PD5579A
52
SYSPW
10
KEX-M8006ZT,M8006ZT-91,M8106ZT,M8106ZT-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
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
AMIF
ST
COMP
FMSD
S-80736AN-D0
IC703
2
1
RESET
VDD
AM-L
M
M
FM-L
AM-L
BU
CN701
4
3
20
20
18
2
3
1
57K
25
57K
13
15
12
RESET
Q706
88
TAPEMUTE
AUD+B
TAPE-L
Q201
SL
XIN
XOUT
S
PD
PC
PD
PC
ST
SD
38
37
A
MAIN UNIT
FM/AM TUNER UNIT
B
C
DECK UNIT
D
PCB UNIT
E
REEL PCB
7
9
18
10
3
SWITCH
70µs
3.2 BLOCK DIAGRAM(KEX-M8106ZT)
11
KEX-M8006ZT,M8006ZT-91,M8106ZT,M8106ZT-91
5
6
7
8
A
B
C
D
5
6
7
8
BU
Q323
5V
REGULATOR
VDD5V
VDD
Q332
Q331
AUD+B
TUNB
BU
8V
REGULATOR
Q608
VDD SWITCH
VDD
SYSPW
Q337-1
Q336
Q337-2
Q335
Q302
ASEN
Q301
BSEN
Q303
ISEN
BU
Q359
Q360
Q358
TUNB
AUD+B
TC74HC4066AF
IC781
ANALOG
SWITCH
NJM2068MD
IC703
NJM2068MD
IC702
Q709
Q603
Q607
UNBAL BAL
NJM2068MD
MIX AMP
IC701
10
8
L+
L-
11
9
6,12
ANSW
Q205
Q703
MUTE
Q705
MUTE
Q701
AM-L
TUNER-L
2
1
2
1
2
1
Q354
Q351
AMB
FMB
BU
ANT
7K
TAPE-L
AMMT
FMMT
AMMT
FMMT
37
38
XIN
SYSTEM CONTROLLER
IC601
PDI
PCK
PDO
PCE
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
IPPW
8
1
2
TX
RX
MUTESENS
RX
TX
IPPW
ANSW
22
30
29
1
100
CN301
CN302
BU
ACC
48
AANT
47
BANT
MUTE
ILL+
+B
ACC
FMPW
AMB
FMB
Q335
Q336
PD5580B
52
SYSPW
12
KEX-M8006ZT,M8006ZT-91,M8106ZT,M8106ZT-91
A
1
234
B
C
D
12
34
3.2 MAIN UNIT(KEX-M8006ZT)(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
SYSTEM MUTE
MIX AMP
TAPE MUTE
TUNER MUTE
RBDS DECODER
FM DIVERSITY
PLL
FM:-26dBs(400Hz,30%)
AM:-16dBs(400Hz,30%)
TAPE:- 8dBs
FM:-18dBs
AM:-18dBs
TAPE:-4dBs
AM
FM
AM
AM
AM
AM
FM
AM
FM
B
A
MAIN UNIT
C
D E
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-M8006ZT,M8006ZT-91,M8106ZT,M8106ZT-91
5
6
7
8
A
B
C
D
5
6
7
8
13
A
8V
5V
ANALOG SW CONTROL
AND BU MUTE
AVC LAN
MUTE
5V REGULATOR
AUDIO 8V REGULATOR
BU ACC ILL SENSE
ANALOG SWITCH
AUDIO 4V
UNBAL BAL
RESET
FM:-13dBs
AM:-13dBs
TAPE:+1dBs
FM:-13dBs
AM:-13dBs
TAPE:+1dBs
SYSTEM
CONTROLLER
A-b
14
KEX-M8006ZT,M8006ZT-91,M8106ZT,M8106ZT-91
A
1
234
B
C
D
12
34
A-a
A-a
A-b
FM DIVERSITY
PLL
FM:-26dBs(400Hz,30%)
AM:-16dBs(400Hz,30%)
AM
FM
B
A
MAIN UNIT
SYSTEM
CONTROLLER
1
2
KEX-M8006ZT,M8006ZT-91,M8106ZT,M8106ZT-91
5
6
7
8
A
B
C
D
5
6
7
8
15
A-a
A-a
A-b
CASSETTE MECHANISM MODULE
UNBAL BAL
SYSTEM MUTE
MIX AMP
TAPE MUTE
TUNER MUTE
RBDS DECODER
TAPE:- 8dBs
FM:-18dBs
AM:-18dBs
TAPE:-4dBs
FM:-13dBs
AM:-13dB
TAPE:+1d
AM
AM
AM
AM
FM
AM
FM
C
D E
4
3
16
KEX-M8006ZT,M8006ZT-91,M8106ZT,M8106ZT-91
A
1
234
B
C
D
12
34
16
A-a
A-b
A-b
5V
ANALOG SW CONTROL
AND BU MUTE
AVC LAN
MUTE
5V REGULATOR
1
2
KEX-M8006ZT,M8006ZT-91,M8106ZT,M8106ZT-91
5
6
7
8
A
B
C
D
5
6
7
8
17
A-b
A-a
A-b
8V
5V
5V REGULATOR
AUDIO 8V REGULATOR
BU ACC ILL SENSE
ANALOG SWITCH
AUDIO 4V
RESET
FM:-13dBs
AM:-13dBs
TAPE:+1dBs
FM:-13dBs
AM:-13dBs
TAPE:+1dBs
4
3
18
KEX-M8006ZT,M8006ZT-91,M8106ZT,M8106ZT-91
A
1
234
B
C
D
12
34
3.3 MAIN UNIT(KEX-M8106ZT)(GUIDE PAGE)
A
CASSETTE MECHANISM MODULE
UNBAL
SYSTEM MUTE
MIX AMP
TAPE MUTE
TUNER MUTE
RDS DECODER
PLL
FM:-26dBs(400Hz,30%)
AM:-16dBs(400Hz,30%)
TAPE:- 8dBs
FM:-18dBs
AM:-18dBs
TAPE:-4dBs
AM
FM
AM
AM
AM
AM
FM
AM
FM
B
A
MAIN UNIT
C
D E
SYSTE
CONTR
A-a
19
KEX-M8006ZT,M8006ZT-91,M8106ZT,M8106ZT-91
5
6
7
8
A
B
C
D
5
6
7
8
A
8V
5V
ANALOG SW CONTROL
AND BU MUTE
AVC LAN
MUTE
5V REGULATOR
AUDIO 8V REGULATOR
BU ACC ILL SENSE
ANALOG SWITCH
AUDIO 4V
BAL
RESET
FM:-13dBs
AM:-13dBs
TAPE:+1dBs
FM:-13dBs
AM:-13dBs
TAPE:+1dBs
ROLLER
A-b
20
KEX-M8006ZT,M8006ZT-91,M8106ZT,M8106ZT-91
A
1
234
B
C
D
12
34
A-a
A-a
A-b
PLL
FM:-26dBs(400Hz,30%)
AM:-16dBs(400Hz,30%)
AM
FM
B
A
MAIN UNIT
SYSTEM
CONTROLLER
1
2
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