FXMG-8606-ZT-91
ORDER NO.
CRT2541
PUB. NO. CRT2541
AUDIO SYSTEM
HEAD UNIT
Manufactured for TOYOTA
by PIONEER CORPORATION
VEHICLE DESTINATION PRODUCED AFTER TOYOTA PART No. ID No. PIONEER MODEL No.
LEXUS LX470 U.S.A., CANADA August 2000 86120-60290 P6808 FX-MG8606ZT/UC
LEXUS LX470 U.S.A., CANADA August 2000 86120-60290 P6808 FX-MG8606ZT-91/UC
LEXUS LX470 U.S.A., CANADA August 2000 86120-60420 P6809 FX-MG8706ZT/UC
LEXUS LX470 U.S.A., CANADA August 2000 86120-60420 P6809 FX-MG8706ZT-91/UC
LX470
2
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-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-MG8606ZT/UC
- Supplementary model is identical to the original except for the addition of following items.
Description Part No.
FX-MG8606ZT-91/UC FX-MG8707ZT-91/UC
Polyethylene Bag CEG1026 CEG1026
Carton CHA4143 CHA4143
Contain Box CHL4143 CHL4144
Protector(TOP) CHP2327 CHP2327
Protector(BOTTOM) CHP2328 CHP2328
FX-MG8706ZT/UC
ID No.P6808
ID No.P6809
- 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...12
4. PCB CONNECTION DIAGRAM ................................36
5. ELECTRICAL PARTS LIST ........................................60
6. ADJUSTMENT..........................................................70
7. GENERAL INFORMATION .......................................76
7.1 DIAGNOSIS.......................................................76
7.1.1 TEST MODE.............................................76
7.1.2 DISASSEMBLY ........................................81
7.1.3 PCB LOCATIONS.....................................86
7.1.4 CONNECTOR FUNCTION DESCRIPTION ..87
7.2 PARTS................................................................88
7.2.1 IC ..............................................................88
7.2.2 DISPLAY...................................................93
7.3 EXPLANATION..................................................94
7.3.1 SYSTEM BLOCK DIAGRAM ...................94
7.3.2 OPERATIONAL FLOW CHART................95
8. OPERATIONS AND SPECIFICATIONS.....................96
3
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
- CD Player Service Precautions
1. Never attempt to turn on this unit when the CD drive
mechanism is upside down. Doing so could cause
damage or malfunction to the drive mechanism.
2. For pickup unit(CXX1313) handling, please refer
to"Disassembly"(see page 81).
During replacement, handling precautions shall be
taken to prevent an electrostatic discharge(protection
by a short pin).
3. During disassembly, be sure to turn the power off
since an internal IC might be destroyed when a con-
nector is plugged or unplugged.
4. Please checking the grating after changing the ser-
vice pickup unit(see page 74).
- 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
Display :
Display : SHIP
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-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-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.
5
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
2. EXPLODED VIEWS AND PARTS LIST
2.1 EXTERIOR
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
1 Screw BMZ26P040FMC
2 Screw BMZ30P050FMC
3 Connector CDE6509
4 Connector CDE6448
5 Chassis CNA2257
6 Frame CNC9130
7 Insulator CNM6650
8 Control Unit CWM7048
9 Terminal(CN703) CKF1064
10 Connector(CN701) CKS3989
11 Connector(CN702) CKS4376
12 Main Unit CWM7161
13 Screw BMZ30P060FMC
14 Screw(M3x6) CBA1393
15 Terminal(CN800) CKF1059
16 Plug(CN803) CKM1221
17 Connector(CN801) CKM1322
18 Plug(CN300) CKS-291
19 Connector(CN301) CKS3568
20 Connector(CN804) CKS4361
21 Connector(CN303) CKS4376
22 86146-48030(ANT1) CKX1057
23 86146-48040(ANT2) CKX1058
24 Holder CNC8704
25 Spacer CNM7022
26 FM/AM Tuner Unit CWE1611
27 Holder CNC6774
28 Screw BPZ26P100FMC
29 Button(LOAD) CAC6928
30 Button(CD EJECT) CAC6929
31 Button(TRAF) CAC6930
32 Button(TAPE EJECT) CAC6931
33 Button(1,2) CAC6601
34 Button(3,4) CAC6602
35 Button(5,6) CAC6603
36 Button(SCAN,MSG) CAC6604
37 Button(AM) CAC6605
38 Button(FM) CAC6932
39 Button(TAPE) CAC6933
40 Button(DISC) CAC6608
41 Button(SEEK,TRACK) CAC6609
42 Button(RDS,TYPE) CAC6610
43 Door CAT2142
44 Spring CBH2435
45 Holder CNV6107
46 Lighting Conductor CNV6201
47 Lighting Conductor CNV6202
48 Holder CNV6205
49 Lighting Conductor CNV6260
50 Lighting Conductor CNV6261
51 Lighting Conductor CNV6281
52 Lighting Conductor CNV6282
53 Keyboard Unit CWS1334
54 LCD(LCD901) CAW1595
55 Connector(CN902) CKS4361
56 Holder CNC8805
57 Spacer CNM6968
58 Lighting Conductor CNV6199
59 Rubber CNV6200
60 Connector CNV6428
61 Knob Unit CXB5578
62 Grille Unit
(FX-MG8606ZT/UC) CXB6484
62 Grille Unit
(FX-MG8706ZT/UC) CXB6485
63 Screw BPZ20P080FMC
64 Door CAT2186
65 Washer CBF1037
66 Spring CBH2446
67 Lighting Conductor CNV6110
68 Lighting Conductor CNV6111
69 Holder CNV6117
70 Gear CNV6435
71 Screw IMS20P030FMC
72 Chassis Unit CXB6097
73 Screw BMZ20P020FMC
74 Screw BMZ26P030FMC
75 Mechanism Assy(Service)CXX1431
76 Screw(M2x2) CBA1250
77 Spring CBH2361
78 Spring CBH2365
79 Spring Unit CXB6850
80 Chassis CNA2256
81 Case CNB2549
82 Holder CNC7477
83 Holder CNC7826
84 Holder CNC8701
85 Insulator CNM5969
86 Sheet CNM5981
87 Sheet CNM6318
88 Cushion CNM7023
89 PCB CNP5516
90 Damper CNV5120
91 Holder CNV5543
92 Screw IMS20P040FMC
93
Cassette Mechanism ModuleEXK3891
94 Screw IMS26P040FMC
95 Screw ISS26P060FMC
96 Screw PMB26P060FMC
97 Transistor(Q809,811,812) 2SB1185
98 Bracket Unit CXB6083
99 Spacer CNM7167
100 Cushion CNM7168
- 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.
6
7
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
2.2 CD MECHANISM
8
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
1-9 •••••
10 CD Core Unit(Servo Unit) CWX2421
11 Connector(CN101) CKS2764
12 Connector(CN301) CKS3966
13 Connector(CN201) CKS3991
14 CD Core Unit(STS Unit) CWX2422
15 Connector(CN701) CKS3989
16 Connector(CN801) CKS3989
17 Connector(CN802) CKS4054
18 Screw CBA1037
19 Screw CBA1041
20 Screw CBA1076
21 Screw CBA1250
22 Washer CBA1512
23 Screw CBA1452
24 Screw CBA1453
25 Screw CBA1479
26 Washer CBF1037
27 Washer CBF1038
28 Washer CBF1039
29 Washer CBF1064
30 Spring CBH2007
31 Spring CBH2271
32 Spring CBH2274
33 Spring CBH2014
34 Spring CBH2015
35 Spring CBH2016
36 Spring CBH2017
37 Spring CBH2290
38 Spring CBH2366
39 Spring CBH2064
40 Spring CBH2195
41 Spring CBH2196
42 Spring CBH2224
43 Spring CBH2250
44 Screw CBA1082
45 Roller CLA3154
46 Roller CLA3157
47 Roller CLA3159
48 Roller CLA3160
49 Shaft CLA3179
50 Spacer CLA3194
51 Roller CLA3248
52 Bush CLA3353
* 53 Shaft CLA3469
54 Shaft CLA3693
55 Steer CNC7215
56 Steer CNC7216
57 Cam CNC8774
* 58 Holder CNC7235
59 Gear CNC7236
60 Gear CNC8883
61 Lever CNC7243
62 Lever CNC7244
63 Lever CNC7245
64 Lever CXB4944
65 Cover CNC7441
66 Holder Unit CXB4946
67 Lever CNC9088
68 Gear CNC8140
69 Sheet CNM6840
70 PCB CNP5764
71 PCB CNP6010
72 Gear CNR1479
73 Gear CNR1481
74 Gear CNR1495
75 Gear CNR1501
76 Gear CNR1502
77 Gear CNR1540
78 Gear CNR1541
79 Belt CNT1080
80 Worm Gear CNV5046
81 Gear CNV5047
82 Gear CNV5048
83 Gear CNV5049
84 Holder CNV5056
85 Pulley CNV5058
86 Arm CNV5061
87 Spacer CNV5066
88 Arm CNV5189
89 Cover CNV5207
90 Cover CNV5424
91 Cover CNV5425
92 Lever CNV5427
93 Arm CNV5491
94 Gear CNV5519
95 Holder CNV5648
96 Composite PCB CNX3327
97 Composite PCB CNX2989
98 Chassis Unit CXB5940
99 Frame Unit CXB5806
100 Lever Unit CXB6026
101 Arm Unit CXB2704
102 Lever Unit CXB2708
103 Lever Unit CXB2709
104 Lever Unit CXB4949
105 Arm Unit CXB2712
106 Lever Unit CXB4948
107 Lever Unit CXB2714
108
Carriage Mechanism Unit(G1) CXB4941
- CD MECHANISM SECTION PARTS LIST
Mark No. Description Part No.
Mark No. Description Part No.
109 Screw CBA1041
110 Screw CBA1250
111 Screw CBA1362
112 Screw CBA1471
113 Washer CBF1038
114 Spring CBH2008
115 Spring CBH2009
116 Spring CBH2010
117 Spring CBL1335
118 Roller CLA3913
* 119 Bracket CNC7228
120 Guide Unit CXB4417
121 Cover CNC7628
122 Sheet CNM6414
123 Sheet CNM5378
124 •••••
125 Sheet CNM5827
126 PCB CNP4978
127 Ball CNR1189
128 Bearing CNR1423
129 Belt CNT1079
130 Holder CNV5037
131 Guide CNV5040
132 Clamper CNV5042
133 Rack CNV5111
134 Arm CNV5579
135 Holder CNV5759
* 136 Chassis CXB6025
137 Arm Unit CXB2705
138
Motor Unit(M4 CARRIAGE) CXB3178
139 Screw Unit CXB3179
140 Lever Unit CXB4450
141 Bracket CNC8584
142 Spacer CNM6345
143 Motor(M5 SPINDLE) CXM1120
144 Screw JFZ14P020FZK
145 Washer YE15FUC
146 Arm Unit CXB6052
147 Arm Unit CXB6053
148 Tray Assy CXB4307
149 Spring CBH2269
150 Sheet CNM7109
151 Cam Motor Assy CXB5240
152 •••••
* 153 Bracket Unit CXB5201
* 154
Motor Unit(M1 Cam Gear) CXB3174
* 155 Motor Unit(M3 ELV) CXB3175
156 Screw JFZ20P025FMC
157 Loading Arm L Assy CXB3171
158
Loading Arm L Assy(Service)CXX1415
159 Screw CBA1453
160 Washer CBF1038
161
Loading Arm R Assy(Service)CXX1457
162 Washer CBF1074
163 Spring CBH2136
* 164 Arm CNC7241
* 165 Arm CXB4449
166 Holder CBL1508
167 Belt CNT1079
168 Holder CNV5055
169 Pulley CNV5057
170 Roller CNV6209
171 Guide CNV5125
* 172 Bracket Unit CXB5937
173 Roller Gear Unit CXB3176
* 174 Motor Unit(M2 LOAD) CXB3177
175 Screw JFZ14P020FMC
176 Loading Arm R Assy CXB5839
177 Screw CBA1453
178 Washer CBF1074
179 Spring CBH2136
* 180 Arm CNC7242
* 181 Arm CXB5822
182 Screw JFZ20P014FMC
183 Roller CNV6209
184 Roller Gear Unit CXB3176
185 Guide CNV5126
186
Switch(S885 MAX DETECT) CSN1052
187 LED(D883) CL202IRXTU
188 Photo-transistor(Q881) CPT230SCTD
189 LED(D891,892) CL202IRXTU
190 Switch(S887 CLAMP) CSN1051
191 Switch(S886 ELV HOME) CSN1052
192 Bracket Unit CXB6086
193
Photo-transistor(Q851,852) CPT230SCTD
194 Resistor(R856) RS1/8S911J
195 Resistor(R857) RS1/8S821J
196 Photo-interrupter(Q1) RPI-221
197 Screw CBA1387
198 Pickup Unit(Service)(P8) CXX1313
199 Spring CBL1467
200,201 •••••
202 Screw CBA1076
203 Sheet CNM7025
9
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
Mark No. Description Part No.
Mark No. Description Part No.
10
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
2.4 CASSETTE MECHANISM MODULE
11
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
- CASSETTE MECHANISM MODULE SECTION PARTS LIST
1 Screw BSZ20P040FMC
2 Washer CBF1037
3 Washer CBF1038
4 Washer CBG1003
5 Deck Unit EWM1030
6 Screw(M2x5) EBA1028
7 Screw(M2x2.5) CBA1037
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 CEAL4R7M35
Mark No. Description Part No. Mark No. Description Part No.
12
A
1
234
B
C
D
12
34
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
ELHOME
CLAMP
LOAD
POWER
CONT
EMPH
ELVSNS
LOADSW
DOORSW
MODESW
CG1
CG2
G15V
ELV1
ELV2
LO1
LO2
PH3
PH2
PH1
FM+B
PICKUP UNIT(SERVICE)
MOTOR PCB(B)
MOTOR PCB(A)
CD CORE UNIT(SERVO UNIT)
PCB UNIT(D)
PCB UNIT(A)
PCB UNIT(C)
PCB UNIT(E)
PCB UNIT(B)
LOAD MOTOR PCB
CD CORE UNIT(STS UNIT)
HOLOGRAM
UNIT
FOCUS ACT
TRACKING ACT
MD
LD+
LD-
LD
MD
FO+
TO+
16
17
V5
Q101
Q102
PD
LD
CN101
IC 101
UPC2572GS
RF AMP
IC 201
UPD63702AGF
DIGITAL SERVO
PROCESSOR
DIGITAL SIGNAL
PROCESSOR
µ-COMPUTER
INTERFACE
35
69
EFM
CD 4CH DRIVER
IC 301
BA5986FM
14
11
16
15
22
BVD
V5
MUTE
9
MD/SD/TD/FD
74
10
11
VR2
XTAL
XTAL
X201
5V
VD
CONT
CN201 CN801
5V
VD
CN301
WDCK
RFCK
RAOV
LRCK
SCKO
DOUT
MCK
IC 501
CXD2511R
SHOCKPROOF
CONTROLLER
BCK
DATA
LRCK
XTLI
39
512
IC 601
AK4321VF
8fs DF D/A LPF
CN701 CN701
6
18
DEMO
PD
IC 502
MSM514400DP-60TS
4M DRAM
VD
VD VD
VD
LCH
WDSL/CHMO/CHMI
XWRE/XRDE/XQOK
XWIH/XEMP/ADRMON/CHDT
V+5V
IC 701
BA05SFP
5V REGULATOR
VM
VD
POWER
CONT
EMPH
4
2
1
XAO/XSTB/XSO/XSI/XSCK/XRST/SCONT
ELVSNS
LOADSW
DOORSW
MODESW
S801
S802
S803
MOTOR DRIVER
IC 802
LB1836M
2
6
3
5
ELVSNS
MOTOR DRIVER
LB1836M
IC 801
2
6
13
9
5
3
12
10
CG1
CG2
CG-
CG+
EL-
EL+
ELV1
ELV2
LO1
LO2
MAXSW
PH2
PH1
PVD
LO-
LO+
PVD
PVD
Q801
VD
Q802
LOAD
ELHOME
CLAMP
CLAMP
ELHOME
CN802
CN252
CN253
CN251
CN301
M
BCL
SPINDLE
MOTOR
CARRIAGE
MOTOR
HOME
SWITCH
EC
VM
VCC
ST/SR
GND
HOME
M
LOADING
MOTOR
M
CAMGEAR
MOTOR
M
ELEVATION
MOTOR
Q851
Q852
D891
D892
PH1
PVD
Q881
D883
PH2
S883
MAX
SWITCH
PH1
PVD
PH1
PH2
MAXSW
LD MOTOR-
LD MOTOR+
MAXSW
PH2
PH1
PVD
ELV HOME
S886
S887
CLAMP
ELEVATION
SENSE
V+5V
5
14
15
4
3
1
2
3
4
8
5
6
7
10
11
1
1
1
1
2
3
4
1
2
4
1
2
1
1
2
3
5
6
3
4
2
1
5
6
3
4
2
1
5
7
3
4
2
1
7
5
9
8
10
11
10
2
11
1
19
28
29
30
19
28
29
30
45
44
46
42
8
9
43
42
35
39
10
1
50
49
48
6
7
11
4
5
2
3
47
46
45
12
44
43
9
16
56
13
27
53
26
79
17
2
18
62
61
75
60
59
58
57
78
77
76
55
6
5
72
69
12
41
50
1
2
3
45
44
40
47
46
49
48
4
5
6
39
7
8
36
35
37
32
33
39
41
41
43
48
50
Q271
BUREV
LCH
SUB
MOTOR
FWD
LCH
BU
BU
Lch
TL
MTL
PLAY
Q351
Q352
EQ.AMP/DOLBY B NR
IC 251
HA12216F
IC 351
PA2020A
DECK UNIT
PCB UNIT
LOAD
LOAD
STBY
MAIN
MOTOR
REV SENSE
FWD SENSE
70µS
LOAD
CD LOAD
CONT
EMPH
POWER
X701
VDCON
VDD
Q202
M
MODE SENSE
46 8 1 3 2
46 8 1
11098
5
2
1771819
32
20
22
6
51
53
56 2 17 19
3
4
20
3
4
4
5
1
FM/AM TUNER UNIT
MAIN UNIT
25
26
FM FRONT END
Q3
Q201 Q202
AM RF
FM/AM 1ST IF 10.7MHz
T31 Q31 CF51
910
32 36
14
19
2
47
1
191715
6
18
9
7
29 28 7 40433138
34
6
41
23 25 16
18
CF232
CF52 CF53 T51
FM
OSC
AM
OSC
FMTV
AMTV
AMIFC
VCO
SEEK
IC 201
PM2007A
FMSL
AMSL
FMSD
TUL
169
25
5
4
37 38
X201
19 20 15 17 12 23 2
43 45
27
IC 2
PA4024A
IC 1
PA4023B
AM+B
Q701
8R5V
VDD
1421
REEL UNIT
M
29
28
40
XOUT
bsen
EREF
ELVSNS
VDCONT
POWER
cdmute
RE
reset
XIN
adena
VREF
PD5575A
IC 701
ANT2
SUB ANTENNA
b
CDL
VDIN
PLL CONTROLLER
D
22 1
419
518
617
716
18 5
10 13
11 12
15 8
19 4
DCLOSE
15
25
1
CD9
29
FMB
AMB
14
ANT1
MAIN ANTENNA
IC 501
LA1061M
5
6
Q501
DIVERSITY
COMP
IC 252
PM4006B
RBDS DECODER
COMP
COMP
IC 553
HA12181FP
AM NOISE CANCELER
Q403
Q405(1/2)
Q401
Q406
Q4
Q405(2/2)
CONTROL UNIT
CN702 CN303
SUB
MAIN
1
NIN
FMSD
13
FMVCO
AMVCO
AMIFC
AMTV
FMTV
LOCL
seek
10
30
AMDET
39
20
18
Q503
IC251
NJM2903M
2
1
3
FMSD
57K
ldet
FMM
AMMUT
modesw
loadsw
doorsw
CG1
CG2
ELV1
ELV2
LO1
LO2
PH3
PH2
PH1
elhome
clamp
LOAD
CONTROLLER
CD
A
B
D E
F
G
H
I
J
K
L
M
N
O
P
Q
19
28
29
30
19
28
29
30
13
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
5
6
7
8
5
6
7
8
A
B
C
D
Q702
Q301
CD MUTE
X601
VDCONT
SW5V
14 15 23
14 15
20 74
23 18 19 17
21
18 19 17
21
22
UPD16432B-001
IC 901
LCD901
Q831
22
11
11
13
13
6
6
DCLOSE CDEJ CSEJ
VDD
IC 603
S-80730ANDT
53
12190
12
RESET
RESET
RESET
25
57K
15
XIN
13
XOUT
RESET
75
73
3
BLIGHT
52
59
58
ENC2+
54
power
56
ENC1-
55
ENC1+
23
CONTROLLER
SYSTEM
PD5594A
IC 601
bsen
KEY
MATRIX
CN804
CN902
bsen
KEYBOARD UNIT
SL
FMSD
ECN1P
ECN1M
PWR
ECN2P
MODE
SYSPWR
LCDBL
ILL
cdej
csej
asens
bsens
Q819
Q829
Q818
Q830
BU
Q816
Q808
KEY CONTROLLER
LCD DRIVER
1
19
18
17
16
5
13
12
8
4
UPD16432B-001
IC 902
LCD DRIVER
VR901
PWR VOL
VR902
AUDIO TONE
ENC2-
mode
57
20
20
ECN2M
Q901
Q902
ILL
7
7
8
8
SYSPW
ILL
CILL
9
9
SYSPW
VDD
Q820
Q822
Q823
49
CDILL
61
ILL
L+
L-
MUTE
ILL+
ACC
ILL-
TX+
TX-
+B
BU
CN801
ACC
MUTE
CN803
TXM-
TXM+
+B
FUSE
5A
AVC-LAN BUS DRIVER
BALANCE TO UNBALANCE CONVERTER
IC602
HA12187FP
6
IC305
TC74HC4066AF
ANALOG SWITCH
43
12
BU
AVC-LAN MUTE
Q801
ISENS
Q805
BSENS
Q806
ASENS
Q807
ILL-
Q825
5
BU
L-
L+
Q812
Q814
4
LAMP
Q802
Q809
Q815
CD9V
8R5V
CD9V
VDCONT
SW5V
Q401
Q402
Q405(2/2)
19
ldet
67
FMMUT
66
AMMUT
Q607
Q304
TAPE MUTE
SW5V
50
TAPMUTE
SYSTEM MUTE
Q307(2/2) Q305
IC301
NJM2068MD
MIXING AMP
HARD MUTE
21
IC302
NJM2068MD
21
IC303
NJM2068MD
21
Q307(1/2) Q308
Q303
BU
SW5V
sysmute
94
30
29
21
ILL-
TX
RX1
RX2
ilsens
22
IPPW
1
2
8
asens
bsens
ILL-
TX
RX
ilsens
IPPW
MUTE
RX
51
MUTE
5
LDO
IC604
TC7SU04F
25
CN303
ldet
FMMUT
Q811
Q813
BU
AUDIO +B REGULATORCD 9V REGULATOR
BU
Q804
VDD5
BU
Q871
Q872
8R5V
ANTPW
ANT+
41
ANTPW
Q862
Q864(1/2)
Q863
Q864(2/2)
8R5V
Q861
TUNB
FMB
AMB
44
AMPW
43
FMPW
TUNL
TL
CDL
C
SW5V
14
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
A
1
234
B
C
D
12
34
FM DIVERSITY
TUNER CONTROLLER
RBDS DECODER
CD MUTE
AM NOISE CANCELER
MIXING AMP
TUNER MUTE
TAPE MUTE
SYSTEM M
LOOP FILTER
AM
FM
FM
FM
AM
AM
FM
AM
FM
AM
FM
AM
FM
AM
FM
AM
FM
AM
FM
AM
FM
AM
FM
AM
AM
AM
AM
AM
AM
AMAM
AM
AM
FM
FM
FM
CD 0dB 1kHz : +2.1dBs
TAPE 250nwb/m 315Hz : -8.24dBs
FM 30% 400Hz : -26.9dBs
AM 30% 400Hz : -16.0dBs
FM
AM
CD
TAPE
: -46.9dBs
: -18.6dBs
: +1.8dBs
: -8.24dBs
FM
AM
CD
TAPE
: -17.0dBs
: -18.6dBs
: +3.3dBs
: -5.1dBs
MAIN
ANTENNA
SUB
ANTENNA
14
25
63
41
52
36
1
4
2
5
3
1
4
2
5
3
1
4
2
1
6
2
5
3
4
14
25
63
63
25
14
1
4
2
5
3
1
4
2
5
3
1
4
2
5
3
2
11
2
A
A-aA-a A-b A-b
A-a
A-b
A-b
A-a
Large size
SCH diagram
Guide page
Detailed page
A-a
3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)
Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL
PARTS LIST”.
C
B
A
FM/AM TUNER UNIT
MAIN UNIT
CN902
Q
CN702
N
CN251
FX-MG8606ZT,MG8606ZT-
5
6
7
8
A
B
C
D
5
6
7
8
15
SYSTEM CONTROLLER
BALANCE TO UNBALANCE CONVERTER
ANALOG SWITCH
BUS DRIVER
RESET
BACKUP SENSE
ACC SENSE
ILLUMINATION
SENSE
VDD 5V REGULATOR
CD9V REGULATOR
AUDIO +B REGULATOR
ANTENNA POWER SWITCH
AVC-LAN MUTE
HARD MUTE
CD : +8.3dBs
Decimal points for resistor
and capacitor fixed values
are expressed as :
2.2 2R2
0.022 R022
←
←
The > mark found on some component parts indicates
the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of
identical designation.
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.
5
3
14
25
36
14
25
36
1
4
2
5
3
6
1
4
2
5
3
6
A
A-b
16
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
FM DIVERSITY
TUNER CONTROLLER
CD MUTE
AM NOISE CANCELER
MIXING AMP
TAPE MUTE
SYSTEM MUTE
H
LOOP FILTER
AM
FM
FM
FM
AM
AM
FM
AM
FM
AM
FM
AM
FM
AM
FM
AM
FM
AM
FM 30% 400Hz : -26.9dBs
AM 30% 400Hz : -16.0dBs
FM
AM
CD
TAPE
: -46.9dBs
: -18.6dBs
: +1.8dBs
: -8.24dBs
FM
AM
CD
TAPE
: -17.0dBs
: -18.6dBs
: +3.3dBs
: -5.1dBs
MAIN
ANTENNA
SUB
ANTENNA
14
25
63
41
52
36
1
4
2
5
3
1
4
2
5
3
1
4
2
5
3
1
6
2
5
3
4
2
11
2
A
1
234
B
C
D
1
2
34
A-a
A-b
A-a
B
A
MAIN UNIT
FM/AM TUNER UNIT
1
2
3
4
17
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
RBDS DECODER
TUNER MUTE
FM
AM
FM
AM
FM
AM
AM
AM
AM
AM
AM
AMAM
AM
AM
FM
FM
FM
CD 0dB 1kHz : +2.1dBs
TAPE 250nwb/m 315Hz : -8.24dBs
14
25
63
63
25
14
1
4
2
5
3
1
4
2
5
3
1
4
2
5
3
5
6
7
8
A
B
C
D
5
6
7
8
A-a
A-b
A-a
C
CN902
Q
CN702
N
CN251
5
6
7
8
9
18
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
SYSTEM CONTROLLER
BALANCE TO UNBALANCE CONVERTER
ANALOG SWITCH
BUS DRIVER
VDD 5V REGULATOR
AVC-LAN MUTE
HARD MUTE
CD : +8.3dBs
Decimal points for resistor
and capacitor fixed values
are expressed as :
2.2 2R2
0.022 R022
←
←
The > mark found on some component parts indicates
the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of
identical designation.
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.
5
3
A
1
234
B
C
D
12
34
A-a
A-b
A-b
1
2
3
4
19
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
RESET
BACKUP SENSE
ACC SENSE
ILLUMINATION
SENSE
CD9V REGULATOR
AUDIO +B REGULATOR
ANTENNA POWER SWITCH
14
25
36
14
25
36
1
4
2
5
3
6
1
4
2
5
3
6
5
6
7
8
A
B
C
D
5
6
7
8
A-a
A-b
A-b
5
6
7
8
9
20
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
A
1
234
B
C
D
12
34
FM
AM
FM
FM
FM
FM
FM
FM
AM
AM
AM
AM
AM
FM,AM
FM,AM
FM,AM
FM,AM
FM,AM
FM,AM
AM
FM
FM
AM
FM
FM
AM
AM
AM AM
AM RF
FM FRONT END
FM OSC
AM OSC
A
3.3 FM/AM TUNER UNIT
B
FM/AM TUNER UNIT
B
21
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
5
6
7
8
A
B
C
D
5
6
7
8
FM
FM
FM
FM
FM
AM
AM
AM
AM
AM
FM,AM
FM,AM
PNS
FM IF
B
22
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
A
1
234
B
C
D
12
34
3.4 KEYBOARD UNIT
C
KEYBOARD UNIT
C
23
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
5
6
7
8
A
B
C
D
5
6
7
8
A
TRAF
MSG
D920
HZU6R2(B1)
51
234
51
234
RWR VOL
AUDIO TUNE
CN804
C
24
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
A
1
234
B
C
D
12
34
M5 SPINDLE
CXM1120
DISC INSERT DETECT
M4 CARRIAGE
CXB3178
D
MOTOR PCB(B)
PICKUP UNIT
(SERVICE)(P8)
RF AMP/
AUTO POWER
CONTROL
CD DRIVER
E
CD CORE UNIT(SERVO UNIT)
3.5 CD CORE UNIT(SERVO UNIT)
D
E
25
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
5
6
7
8
A
B
C
D
5
6
7
8
FOCUS/TRACKING
CARRIAGE/SPINDLE
DIGITAL SERVO
DIGITAL SIGNAL PROCESSOR
D/A CONVERTER
F
E
26
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
A
1
234
B
C
D
12
34
E
CD CORE UNIT
(SERVO UNIT)
M1 : CXB3174
Q1 : RPI-221
M3 : CXB3175
F
MOTOR PCB
(A)
ELV SENSE
SURE TRACK
MEMORY CONTROLLER
G
CD CORE UNIT(STS UNIT)
MOTOR DRIVER
H
+5V REGULATOR
3.6 CD CORE UNIT(STS UNIT)
F
G
27
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
5
6
7
8
A
B
C
D
5
6
7
8
D/A CONVERTER
4M DRAM
?
CN???
MOTOR DRIVER
G
CN701
Q
28
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
1 RFO 0.5V/div. 0.2µs/div.
Normal mode: play
1 CH1: RFO 1V/div.
2 CH2: MIRR 5V/div.
Test mode: Tracking open
0.5ms/div.
1 CH1: RFO 1V/div.
2 CH2: MIRR 5V/div.
Normal mode: The defect part
passes 500µs/div.
0.5ms/div.
3 CH1: FIN 0.5V/div.
4 CH2: FOP 2V/div.
Test mode: No disc, Focus close
0.2s/div.
3 CH1: FIN 0.5V/div.
5 CH2: FOK 2V/div.
Normal mode: Focus close
0.2s/div.
6 CH1: FEY 0.5V/div.
7 CH2: XSI 2V/div.
Normal mode: Focus close
1ms/div.
8 CH1: TEY 0.5V/div.
9 CH2: TIN 0.5V/div.
Test mode: 32 tracks jump (FWD)
0.5ms/div.
8 CH1: TEY 0.5V/div.
9 CH2: TIN 0.5V/div.
Test mode: Single jump (FWD)
0.5ms/div.
6 CH1: FEY 0.1V/div.
3 CH2: FIN 0.2V/div.
Normal mode: Play
20ms/div.
3 CH1: FIN 0.5V/div.
0 CH2: SIN 1V/div.
Normal mode: Focus close
0.5s/div.
GND
→
GND
→
GND
→
GND
→
- Waveforms
0 SIN 0.5V/div. 0.1s/div.
Normal mode: Play
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
1 RFO 0.5V/div. 0.5µs/div.
Test mode
REFOUT
→
REFOUT
→
REFOUT
→
Note:1. The encircled numbers denote measuring pointes in the circuit diagram.
2. Reference voltage
REFOUT:2.5V
29
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
3 CH1: FIN 1V/div.
$ CH2: HOLD 5V/div.
Normal mode:
The defect part passes 800
µ
m
8 CH1: TEY 0.5V/div.
6 CH2: FEY 0.1V/div.
Normal mode: AGC after focus close
8 CH1: TEY 0.5V/div.
! CH2: SD 0.5V/div.
5ms/div.
0 SIN 1V/div. 10ms/div.
Long Search
8 CH1: TEY 1V/div.
# CH2: TEC 1V/div.
Test mode: Focus close
Tracking open
2ms/div.
6 CH1: FEY 0.2V/div.
3 CH2: FIN 0.5V/div.
Normal mode: During
AGC
1ms/div.
@ EFM 1V/div. 2µs/div.
Play
0.2s/div.
% Dout 2V/div. 5µs/div.
Play
^ LRCK 2V/div. 10µs/div. * ADRMON 1V/div. 1s/div.
Normal mode: Starting play
GND
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
REFOUT
→
1 CH1: RFO 1V/div.
$ CH2: HOLD 5V/div.
Normal mode:
The defect part passes 800
µ
m
500µs/div.
REFOUT
→
REFOUT
→
8 CH1: TEY 0.2V/div.
9 CH2: TIN 0.5V/div.
Normal mode: During
AGC
1ms/div.
REFOUT
→
REFOUT
→
GND
→
GND
→
500µs/div.
30
FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91
8 CH1: TEY 0.5V/div.
9 CH2: TIN 0.5V/div.
Test mode: 100 tracks jump(FWD)
8 CH1: TEY 0.5V/div.
9 CH2: TIN 0.5V/div.
Normal mode: Play
10ms/div.
5ms/div.
REFOUT
→
REFOUT
→
& SCKO 2V/div. 500ns/div.
Play
REFOUT
→
) CH1: RCH 2V/div.
( CH2: LCH 2V/div.
Normal mode: PLAY (0dB,1kHz)
200µs/div.
AAGND
→
AAGND
→
REFOUT
→
REFOUT
→
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