A B C D E
KDC-8026/MP825
KDC-MPV8025/W7027
1
2
3
4
5
PANEL MECHA ASSY
6
7
EXTERNAL DISPLAY &
STEERING REMOTE CORD
12
43
519
6210
11
873412
LX-BUS
12MOTOR+
M
PH
S-MOTOR
P-MOTOR
RLED
(1K)
SW3
M
SW2
15
14
13
12
11
10
9
8
7
RPH
(100K)
6
5
(1K)
SW4
4
SW1
3
2
1
13
MOTOR-
MOTORMOTORMOTORMOTORMOTOR+
MOTOR+
MOTOR+
MOTOR+
PH-OUT
SW5V
SW4
D GND
SW1
SW2
SW3
O-CLK
O-DATA
O-CE
REMO
LX-RST
AUDIO GND
LX-CON
LX-MUTE
LX-CLK
LX-REQ-S
LX-DATA-M
LX-DATA-S
LX-REQ-M
ANT.
ELECTRIC UNIT (X34-304x-xx)
CN3
TP15
∗
R310 470
TP16
∗
∗
TP14
A1
TP17
TP18
TP20
TP21
TP22
TP23
TP24
TP25
TP26
TP19
TP27
TP28
TP29
TP13
26
TUNER
R61
D66
25
RFGND
FMANT
AMANT
OSCGND
AM+B
OSCGND
OSCGND
OSCGND
COM+B
IFCOUT
SDA
SCL
DIGGND
VDD
AOUT
SMETER
IF1+B
IF1GND
R309 470
∗
R311 470
∗
R308 1K
R315 4.7K
R313 4.7K
R314 4.7K
R319 100
R316 4.7K
R318 100
R317 4.7K
R312 100
1K
NC
NC
VT
NC
NC
NC
C71
Rch
1
2
Lch
GND
CN2
+B
2431
8657
109
12
11
1413
1615
1
2
W2
3
2
1
∗
D54
R2
10
R3
4.7
R1
10
D53 D52
0.01
TP89
1
TP80
2
3
4
TP81
5
TP82
6
7
8
C401
9
10
11
TP83
12
TP84
13
TP85
14
TP86
15
16
TP87
17
18
19
TP90
20
21
TP91
22
TP88
23
24
∗
C4
0.47
C5
47u6.3
C3
0.47
0.01
D55
C403
to CD MECHANISM
SERVO GND
SERVO +B
CN4
D50
4
+
6
TP59
TP60
68
67
69
10
43
42
41
96
88
95
94
40
D51
L7
Q103
22K
R403
AM+B SW
1K
R402
Q102
22K
2
22K
0.01
84
1
100
L11
0.01
4.7uH
C405
L12
4.7uH
0.01
C407
82
5.0V
MOSW
LO/EJ
TP61
61
62
7.6V
64
63 65
5V
0V
D-GND
BU5V
5.0V
D-GND
TP62
TP63
TP64
L2
+
C113
+
220u16
C112
220u16
∗
E
R406 2.2K
92
R407 2.2K
93
C408
2.2
C411
R404
330P
4.7K
Q104
4.7K
IC13 IC14
NC10
1
VCC
OUT1
2
NC2
3
IN1
4
OUT2
IN2
5
0V
SGND
PGND
IC13,14
MOTOR DRIVER IC
for PANEL MECHA
NC8
TP65
R321
2.2K
2.4V
2.4V
5.0V
10
9
8
7
6
NC
SW3
TP66
60
R111
47K
D5
44
RDS DECODER IC
5V
∗
IC12
0V
1
QUAL
2
RDDA
5V
0V
3
VREF
4
MPX
5
OSEL
6
0V
GND
7
ARI
8
FILOUT
0V or 7.6V
0V or 7.6V
0V
M STOP
TP68
59
R109
47K
0.22
C114
Q10
SW for IC5
RDCL
OSCOUT
OSCIN
EXTRES
FSEL
0.22
C259
0.22
C260
M RST
MUTE L
TP69
587470
14.4V
0V
Q10
47K
R110
T57
VCC
TM
TP30
21
MOTOR+
16
15
14
13
12
11
10
9
MOTOR-
TP70
∗
TP31
MUTE R
TP71
A
5.0V
0V
0V
0V
66
Rch
43
R405
2.2K
5V
0V
C110
L13
AGND
TP72
+
100u25
87
5V
0V
X3
4.332MHz
4.7uH
7.6V
0V
Lch
TP73
TP74
C111
100u25
C412
10P
C413
10P
C409 0.01
C410 10u16
1
2
3
4
5
AUDIO 8V
MS DA
SW1
MS CLK
TP76
TP75
TP77
SCL
SDA
90
0V
14.4V
1
IC5
+
VIIN
SWOUT
IC5
SWITCHING
REGULATOR IC
for CD5V
+
10
NC10
VCC
NC2
IN1
IN2
SGND
9
OUT1
8
NC8
7
OUT2
6
PGND
807978
TP38
TP37
TP36
1234567
CN6CN7
SW2
SW3
SW2
TP78
R323
2.2K
R322
2.2K
91
2.4V
5.0V
5
432
VOS
GND1
0V or 7.6V
C261
SW1
D OUT
242322212019181716151413121110987654321
TP79
0V
ON/OFF
0.22
C262
0.22
TP35
D-GND
77
SW4
SW5V
81
TP34
PH-OUT
21
X34-304x-xx (1/4)
21
F G H I J
KDC-8026/MP825
KDC-MPV8025/W7027
4
23
2K
22
2K
V
V
(X34-304x-xx)
MODEL
NAME
KDC-MPV8025
KDC-W7027
KDC-MP825
KDC-7027/Y
KDC-8026
UNIT
ABCDE
No.
0-10
YES
YES
2-71
YES
YES
0-11
NO
YES
2-72
NO
YES
0-21
YES
YES
R279 4.7K
R277 470
1
2
4
5
R274 1K
8
9
R273 2.2K
10
11
R271 470
SDA
R270 470
SCL
R269 4.7K
R272 4.7K
R267 47K
R268 33K
15
16
R266 1K
17
100K
R265
20
21
22
23
24
25
RESET IC
0V
NO
YES
YES
YES
NONOYES YES
YES
YES
5V
0V
IC7
3
NC
4
VSS
C206 1
NO
X86-3730-11
YES X86-3732-70
NONONO
X86-3730-11
X86-3732-70
X86-3730-11
1
2
3
4
5
6
5.0V
7
0V
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
5V
0V
2
5.0V
VDD
1
OUT
TP119
C23,
A1
24
YES
YES
NO
YES
YES
5V
0V
PLL DATA
AM+B
(FM+B)
V ILL PAN-E2P DATA
V ILL PAN-E2P CLK
EVDD
5V
EVSS
0V
AFS
5V
BEEP
0V
REMO
P MUTE
(SVR)
IC2 SDA
IC2 CLK
P STBY
P CON
DIMMER CON
TEST
0V
TYPE2
5V
MUTE
0V
PRE MUTE L
PRE MUTE R
BU DET
ACC DET
SW5V
D20
100K
R207
5V
0V
C100
2200u50
3900u50
2200u50
3900u50
2200u50
R278 470
R280 4.7K
1009998
5V
0V
5V
0V
5V
0V
5V
0V
5V
0V
5V
0V
C252
C94-0052-05
C94-5540-05
C94-0052-05
C94-5540-05
C94-0052-05
100
98
99
R248 1K
R245 1K
R246 1K
97
L CLK
PLL CLK
L DATAS
5V
0V
5V
0V
5V
0V
5V
0V
EXT AMP CONT
2627282930
R264
262728
97
R247 100K
L DATAL
5V
0V
DIMMER
2.2K
D54,
55
NO
YES
NO
YES
NO
R250 100K
5V
0V
ANT CON
29
R146
R203
NO
YES
YES
YES
NO
NO
YES
YES
YES
NO
95L596
600
969594
LX CLK
LX DATA M
5V
0V
5V
0V
P ON
ILL ON
RESET
31
31
30
R204
YES
NO
YES
YES
94
R251 100K
LX DATA S
5V
0V
10K
R201
31
22P
C202
R206
R205
NO
NO
YES
NO
YES
YES
NO
NO
NO
YES
92
93
R252 100K∗R253 100K
∗
9392919089
R DATA
R QUAL
SYSTEM u-COM
XT2
XT1
32
333435
X2
32.768kHz
27P
C203
R225-227,
308-311
YES
YESNO
YES
YES
NO
91
90
R254 2.2K
R255 2.2K
CD SW1
CD SW2
IC1
REGCX2X1
R200
15K
3.3V
X1
C204 1
R252,
R281
253,257
YES
YES
NO
YES
YES
YES
NO
NO
YES
YES
88
R257 100K
R256 100K
∗
8887868584
KEY REQ
LX REQ S
5V
0V
5V
0V
VSS
VDD
3637383940
0V
5.0V
20.000MHz
YES
YES
87
R CLK
5V
0V
CLKOUT
W1
NO
NO
NO
R275 100K
0V
NC
POWER-DET
5V
0V
LX REQ M
41
R202 100K
40
83
84
R259 1K
R260 2.2K
0-2.0V
83
NOISE
IFC OUT
5V
0V
5V
0V
LX MUTE
LX CON
LX RST
42
434445
41
42
43
82
R261 2.2K
C211 1000P
0-5.0V
82
S METER
5V
0V
CD MECHA+B
R281 47K
∗
44
82
81
R238 2.2K
R262 1K
R234
81
PH-OUT
4.6V
0V
3.5V
0V
TYPE0
46
R204 10K
R203 10K
R205 10K∗R206 10K
∗
∗
∗
80
R239 2.2K
2.2K
R235
80
FPM SW3
0V or 5.0V
TYPE1
79
2.2K
79
FPM SW2
5V
0V
2.5V
0V
IC2TYPE0
47
R208 10K
78
R241 1K
R240 2.2K
2.2K
R236
787776
FPM SW1
or 5.0V
5V
0V
0 or 2.5V or 5.0V
5V
0V
IC2TYPE1
PAN 5V
484950
R209 10K
77
2.2K
R237
FPM SW4
5V
0V
5V
0V
FPM MOTOR C
FPM MOTOR O
FPM MOTOR F
FPM MOTOR B
5V
0V
E2P5V
50
76
0.6V or
1.6V or
4.2V
PAN DET
PHONE
M MUTEL
AVREF
M MUTER
O CLK
O DATA
MOSW
CD SW3
M STOP
M RST
5V
0V
5V
0V
5V
0V
5V
0V
AVSS
AVDD
O CE
LO/EJ
VOL B
BVSS
BVDD
VOL A
L INH
L CE
5V
R233 100
0V
R232 1K
75
R230 1K
74
5V
R231
0V
5.0V
R228 1K
5.0V
C208
C207
5V
0V
0V
∗
R227 100
∗
R226 100
∗
R225 100
R220 100
R219 100
R218 2.2K
R215 4.7K
0.01
0V
R214
0.01
4.7K
R213 1K
R212 1K
R285 1K
R224 1K
R223 1K
R222 1K
R221 1K
R217 1K
R216 1K
R229
100K
100K
5
5
5
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
DSI
.6V
0V or 7.6V
0.22
81
77
56 789101112131415
SW4
SW5V
TP34
2
PH-OUT
MOTOR +
22
TP33
MOTOR -
MOTOR +
MOTOR +
MOTOR +
X34-304x-xx (2/4)
TP32
MOTOR -
MOTOR -
MOTOR -
52
53
57
54
R325 4.7K
ILL+B
TP54
NC
REMO
R324 4.7K
TP53
VOL-A
TP52
NC
TP50
TP51
L-CE
L-INH
VOL-B
TP55
TP57
TP56
TP58
1234567891011 1213 14 15 1617181920 212223
CN5
NC
PAN 5V
D-GND
D-GND
ILL-GND
ILL+B
ILL-GND
TP49
99
98
97
L-DATAL
TP48
17
R329 4.7K
TP46
TP47
TP45
CONT
L-CLK
DIMMER
L-DATAS
X16-254-
2/3
X16-255-
A
CN1
31
RST
TP44
50
22K
D65
P1
Q63
E2P 5V
22K
SW
D63D64 D62
R326
100K
D60
4
51
R327
4.7K
100
R330
TP42
NC
DSI
DATA
PAN-E2P
TP43
24
R328
4.7K
E2P5V
R331
5
75
470
100
R332
TP40
TP41
25 26 27 28
CLK
PAN-E2P
PAN-DET
TP39
ESD-GND
ESD-GND
IC1 :
UPD703030GC042
IC2 : TDA7411
IC3 : M5237ML
IC4 : TDA7560
IC5 : SI-8050JD
S-80837CNNBIC7 :
IC8 : TC74HC02AF
IC12 : TDA7479D
IC13,14 : LB1930M
Q1,8,9,13 : 2SA2057
Q2,10,14,32-34 : 2SC4081
Q3,27 : 2SA1576A
Q5,11,54,102 : DTC124EUA or
Q6,30 : DTC144EUA or
DTA124EUA or
:Q4,7,12,28,51,52,63
UN5112
UN5212
UN5213
Q23,26 : DTC114YUA or
Q24,25 : 2SB1240
Q28 :
Q29 : DTA123JK or
Q53,55,56,59,60,104
Q103 : 2SB1188(Q,R)
UN5214
DTA114EUA
KRA105S
: DTC143TUA or
UN5216
KDC-8026/MP825
KDC-MPV8025/W7027
D1 : 1N5393G-M5
D2 : RB160L-40
D3 : MA4056(N)-M
D4 : MA4082(N)-L
D5 : SFPB-54V
D6 : MA4110-L
D9-12,33-40 : 1SR154-400 or
D13,20,29-31 : 1SS133
S1J
D14 : MA4056-M
D15 : MA4047-M
D16 : MA4068(N)-M
D17 : MA4062(N)-M
D23,24 : DAP202U or
D25-27,50 : RD6.8M(B2)
D28,51 : RD6.8MW
D52-55,60,62 : MA3062WA
MA142WA
ONMLK
D63-65 : DA204
D66 : IMSA-6
43
C1
+
10
11
1
2
3
4
5
6
7
8
9
AUXL
AUXC
AUXR
CDCHR+
CDCHRCDCHLCDCHL+
NV+
NV-
AM
MPX
LEVEL
12
4.6V
R300
0.1
C254
4.7K
0.47u50
4.2V
44
MPIN
13
4.5V
CDL
4.2V
14
0V
C253 0.1
D25 D26
R233 100K
R232 1K
230 1K
5V
R231
100K
0V
74
100K
R229
28 1K
∗
R227 100
∗
R226 100
∗
R225 100
R220 100
R219 100
R218 2.2K
R215 4.7K
.
0V
R214
.
R213 1K
R212 1K
R285 1K
V
V
R224 1K
R223 1K
R222 1K
R221 1K
R217 1K
R216 1K
4.7K
70
69
68
67
66
65
64
63
62
61
60
59
58
75
57
54
53
52
51
+
C200
47u6.3
C201
82
4.7uH
150P
L4
0.01
2
3
4
6
C12
0.01
C11
10KR80.022
C9
R7
0.47
4.7K
C10
D60
E-VOL & N.C. & MPX
0-2.6V
MPOUT
QUAL
15
4.7K
R301
Q53
NOISE
BUFFER
C2
+
+
C252
0.47u50
∗
4.2V
4.2V
4.2V
4.2V
434241403938373635
MDL
CDR
MDR
SUBL
CREF
IC2
0V or 2.7V or 3.7V
5V
0V
AFS
16
17
TP116
Q54
Q53
22K
22K
8
83
4.7K
LOGIC IC
for MUTING
IC8
1
5V
0V
2
5V
3
0V
4
5V
0V
5
20
31
23
27
SMALL LAMP
DET SW
24
ACC DET
Q29
6
7
0V
0.01
C135560
EX AMP
CONTROL BUFFER
∗
D
47K
2.2K
D14
R132
26
4.2V
SUBR
SMUTE
VSS
C131
Q33
4.2V
ACOUTL
ACOUTR
181920
TP118
1u50
R142
34
ACIN0L
5V
0V
SDA
SCL
SCL
SDA
Q54
E-VOL
MUTE SW
VDD
+
47K
D17
18K
C134
76
ACIN0R
FREER
4.2V
TP117
14
13
12
11
10
9
8
47K
0.01
D15
ACIN1R
ACIN1L
ACIN2L
ACIN2R
ACIN3R
ACIN3L
VDD
GND
OUTLF
OUTRF
OUTRR
FREEL
21
22
4.2V
4.2V
Q30
R144
47K
R143
C129
OUTLR
5.0V
C130
0.022
3.3K
1/2W
R134
0.01
47K
33
32
31
30
29
28
27
26
25
24
23
R133
100K
R145
100K
R135
4.2V
4.2V
4.2V
4.2V
4.2V
4.2V
8.4V
0V
4.2V
4.2V
4.2V
5V
0V
5V
0V
5V
0V
C15
0.1
∗
C23
1
C22
1
0.01
C251
20
B.U. DET
C213
0.01
R9 33K
C13 0.1
∗
C24
1
C21
1
L6
4.7uH
+
C250
47u16
FR
22K
R138
Q32
R141
8.2K
C132
10K
R140
1000P
10K
R139
D16
21
22
11
R302 220
TH1
470
15
D23
D24
Q51,52
MUTE
DRIVER
R303
22K
C258 1u50
R307
R305
4.3K
9
C31
0.22u50
C34
0.22u50
C256
33u16
+
C255
1u50
+
Q51
22K
22K
Q52
22K
22K
D30
D29
+
7.5K
D31
R306
0V
0-4.4V
14.4V
0V
C257
10
1u50
+
6.8V
0V
14.4V
0V
∗
W1
R10 33K
C16
C14 0.1
0.1
D10
Q24
1K
1/2W
R124 4.7K
R125
Q23
∗
C
15
14
22K
13
D9
Q23,24
P.ANT SW
FR
20
AUDIO POWER IC
IC4
24
PGND4
22
MUTE
20
VCC2
18
PGND3
16
ACGND
6.8V
14
IN4
6.8V
12
IN2
6.8V
10
SVR
8
PGND1
6
VCC1
4
STBY
2
PGND2
22K
R127
1K
1/2W
R126
10K
47K
28
3.3u35
3.3u35
5V
0V
C41
R21
360
+
C42
+
C49
+
C50
+
OUT4+
OUT3+
OUT1+
OUT2+
HSD
OUT4-
OUT3-
SGND
OUT1-
OUT2-
IN3
IN1
TAB
4.7K
4.7K
R223.3u35
360
R45
360
4.7K
4.7K
R463.3u35
360
Q55,56,59,60
PRE-OUT
MUTE SW
25
23
21
19
17
15
13
11
9
7
5
3
1
Q55
22K
R23
Q56
22K
R24
Q59
22K
R47
Q60
22K
R48
D38
D37
6.8V
6.8V
6.8V
6.8V
C33
0.22u5
6.8V
0V
C32
0.22u5
6.8V
6.8V
6.8V
6.8V
6.8V
D35
D36
0V
Q25,
P.C
Q25
D12
+
C126
R128
3.3u35
R130
22K
1K
1/2W
D11
R131 4.7K
3
X34-304x-xx (3/4)
23
KDC-8026/MP825
KDC-MPV8025/W7027
5:DA204U
:IMSA-6801
SIGNAL LINE
GND LINE
B LINE
3
2
C128
D13
0.1u50
2
Q26
+
10K
47K
Q55
Q56
Q59
Q60
,56,59,60
E-OUT
TE SW
D37
.8V
.8V
.8V
.8V
.8V
0V
.8V
.8V
.8V
.8V
.8V
D36
Q25
R23
R24
R47
R48
D38
C33
0.22u50
C32
0.22u50
D35
Q25,26
P.CON SW
+
C126
3.3u35
R130
22K
R31
180
22K
FRONT
22K
R32
180
R55
180
22K
REAR
/NON-FAD
22K
R56
180
D39
D34
Q27
D40
FR+
FRRR+
RR-
D33
Q27,28
P-CON
PROTECTION
C127 1
FR
Q28
10K
10K
R129
1/2W
1K
D28 D27
∗
B
C67
0.1
C69
0.1
TP115
16
TP110
29
C108
SW5V
220u10
0.47C810
C6
47u6.3
+
C7
0.47
13
3
14
15
Q3
2.2K
R102
25
Q11-14
ILL+B AVR
1
C107
+
4.3K
R107
∗
R146 1K
R147 10K
R148 10K
D1
R103
22K
30
24K
R106
R6
R4
4.7
R5
10
FR-
RR-
FR+
RR+
C101
TP112
R105
15K
1.29V
CN1 TOP VIEW
12
10 8
11 9
1K
0.01
C70
R60
FR
2
TP99
FRONT Lch+
TP98
TP97
TP96
TP95
FRONT Rch-
TP94
TP93
FRONT Rch+
TP92
TP101
TP102
TP103
TP104
TP105
TP106
TP107
0.01
+
C100
∗
L1
TP109
C105
100u6.3
Q13
Q14
R112
1.5K
D6
+
C109
100u10
REGULATOR IC
for A8V
IC3
INOUT
GND
0V
246
7531
TP6
TP5
TP4
TP12
TP11
TP10
TP9
TP8
TP7
REAR Lch+
FRONT Lch-
REAR Lch-
REAR Rch-
REAR Rch+
P-ANT
EXT CONT
P-CON
PHONE
ACC
ILLUM
GND
TP100
TP108
B.U.
Q1
B.U.5V AVR
Q2
+
+
C104
10u16
22K
22K
Q12
SERVO+B AVR
Q8
Q7
22K
13.7V
Q6-8
AUDIO8V AVR
56
12
8
7
6
5
4
3
2
1
R101
R104
220
22K
TSRQP
CAUTION : For continued
safety, replace safety critical components only with
manufacturer’s recommended parts (refer to
11 12
910
/SUB
REAR
78
CN1
J1
9
10
11
12
13
14
15
16
FUSE
AUXR
AUXG11 12
AUXL
RL910
RR
RG78
FR
FG
FL
NFL34
NFR
NFG
F1 10A
56
FRONT
34
12
(E30-6314-05)
KDC-MP825
::
EXT.
REAR R
VIOL/BLK
VIOL
65734
GRY
GRY/BLK
FRONT R
CONT.
PNK/BLK
1311 12 1410
BLU
ANT CONT
REAR L
GRN/BLK
GRN
9
8
WHT
WHT/BLK
FRONT L
DC CORD
(E30-6294-05) : KDC-8026
D2
22K
R100
+
C102
C103
22K
Q11
0.01
220u16
D3
100
22K
Q9
Q34
D4
0.47
1.5K
C106
R108
TP111
Q5
Q4
22K
22K
22K
22K
Q6
47K
47K
Q4,5
SW14V
1211
109
78
65
34
21
(E30-6312-05)
KDC-W7027
KDC-MPV8025
KDC-7027/Y
KDC-8026
BU
ILLUMI
TEL MUTE
ORG/WHT
YEL
BRN
1615
12
BLK
RED
BLU/WHT
P. CON
ACC
GND
FL+
WHT/BLK
FL-
GRY/BLK
FRFR+ 125 RR+
BLU/WHT
ANT CONT
P CONT
BLU/WHT
B.UP
214
A
P.CON
3
24
B
1537
FR-
RR-
FR+
RR+
FRONT AUX IN
/SUB
REAR
GRN
9
8
WHT
DC CORD
(E30-6295-05) : KDC-MPV8025
WHT
GRY
RED
BLK
ILLUMI
658
68
FL-
FL+
KDC-8026/MP825/MPV8025/W7027 (1/3)
parts list).
Indicates safety critical
components. To reduce the
risk of electric shock, leakage-current or resistance
measurements shall be
carried out (exposed parts
are acceptably insulated
from the supply circuit) before the appliance is returned to the customer.
• DC voltages are as
measured with a high
impedance voltmeter.
Values may vary slightly
due to variations between individual instruments or/and units.
REAR L
REAR R
TEL MUTE
GRN/BLK
VIOL/BLK
VIOL
BRN
1311 12 1410
65734
BLU
GRY
GRY/BLK
WHT/BLK
FRONT L
89
10117
6
134
143
152
161
GND
7
RL+
ACC
RL-
FRONT R
ANT CONT
KDC-MP825
GRN
RL+
GRN/BLK
RL-
VIOL/BLK
RR-
VIOL
PMK/BLK
BRN
ORG/WHT
YEL
DC CORD
(E30-4942-05)
: KDC-W7027
KDC-7027/Y
BLU/WHT
P. CON
CONT
TEL MUTE
ORG/WHT
RED
EXT.
ILLUMI
ACC
BU
YEL
1615
12
BLK
GND
1
2
3
4
5
6
7
24
X34-304x-xx (4/4)