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P
Q
R
to M-A100
M-A300
J7
17
16
15
14
13
12
11
10 9
8
7
6
5
4
3
2
1
1
1
C199 220P
J1
R1
C196 220P
Lch 1
1K
R303
1K
CD
Q14
R96 10
C197
220P
R99 10
R2
Rch 2
21
R97 10
1K
C198
220P
R98 10
R5
R100 10
Lch 3
7
1K
AUX
R6
Rch 4
22
1K
R9
Lch 5
15.3V
2
1K
REC
R10
Rch 6
R
1K
TAPE1/MD
J2
R13
Lch 1
L
6
1K
PLAY
R14
Rch 2
23
1K
R17
Lch 3
9
-15V
1K
REC
3
R18
Rch 4
20
1K
TAPE2
+15V
(MONITOR)
-6dB
R21
C31
15.3V
Lch 5
11
2.2u50
8
C35
R57
ON/OFF
3
1K
22u16
1K
1
2
PLAY
IC3
C37
(1/2)
-2.7V
R301
22u16
R63
R22
330
Rch 6
18
1K
1K
BUFFER
Q1
J3
R25
Q2
Lch 1
R64
R302
1K
330
C38
1K
22u16
-2.7V
LD/(DVD)
6
R58
C32
7
C36
1K
2.2u50
5
R26
22u16
Rch 2
25
IC3
4
1K
15.4V
(2/2)
15V
4
R29
Lch 3
-6dB
1K
4.4V
DRIVE
-2.7V
REC
Q15
R49
100
R30
Rch 4
4.9V
1K
VCR
R92
R33
220K
Lch 5
3
1K
PLAY
R34
Rch 6
26
1K
R
REC SEL.
J4
IC2
BYPASS/DSP SEL.
R37
Lch 1
L
L
1K
5
FRONT
R38
Rch 2
R
1K
R91
220K
R41
SLch 3
15V
SL
1K
+15V
SURR.
R42
SRch 4
SR
1K
DVD 6ch
INPUT
R45
Cch 5
C
1K
R46
6
SWch 6
SW
1K
1
2
3
4
5
6
7
8
9
10
11 12 13 14 15
1
2
3
4
5
6
7
8
9
CN17
X05-
CN1
I
H
1/4
WH2
A
CAUTION: For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to
7
parts list).
indicates safety critical components. For continued protection against risk of fire, replace only with same type
and rating fuse(s). 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.
S
T
U
B
CONTROL UNIT
(X11-37XX-XX) (A/5)
CN16
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R85
1K
X5 8MHz
R79
TP-S
220K
R94
4.5V
Lch
2.4v
4.5V
1M
2.5V
+25V
AGND
VDD
ADM
VREF
A B
A B
INV-PHASE
0V
ADM-CONT
SRAM
L+DELAY
R+DELAY
A
A
B
A B
B
7K/5K
DC-
IC1
20K
OUT-
OUT
40KHz
FILTER
L-R
INPUT
IN-FILTER
SELECTOR
L+R
-6dB
B-NR
A
B
A
B
A
B
VSS
VCC
DEC
50K
50K
0V
9.0V
Sch
R87 1K
Rch
21
R88 1K
Lch
22
R89 1K
23
C59
C60
100P
100P
R83
+15V
22K
220K
IC4
DOLBY PROLOGIC
DECODER
4.5V
BSW11
(BYPASS-11)
CONTROL
BSW2
BSW2
C39
B
A
B
A
BSW2
0.01
BSW2
CTRIM
MUTE
BSW2
BSW2
B
A B
A
CMODO
R50
B
A
B
A
22K
LPF
C46
2.2u50
NOISE
VOA
R70
CH
100K
R69
VOA
1K
NOISE
FILTER
R74
0V
11K
R73
11K
R71
C53
100
1u50
0V
15V
+15V
30V
30V
+5.6V
+5.6V
+25V
+25V
+15V
+15V
15V
15V
10
11
12
13
14
15
15
14
13
12
11
10 9
8
7
6
5
4
3
2
1
E4
E3
A
WH3
The DC voltage is an actual reading measured with a high impedance type voltmeter with no signal input. The measure-
ment value may vary depending on the measuring instruments used or on the product.
V
W
X
WH10
C
E8
4
3
2
1
Sch
4.5V
(BOTTOM VIEW)
IC5
DOLBY
SURROUND
DECODER
VOL
/MUTE
VDD
S-TRIM
51
CP6 100Kx5
14.5V
9V AVR
Q13
R259
+
R172 220
9.0V
10 1/4W
50
+15V
R171 220
49
9.6V
R218
R189 220
220
48
R188 220
47
R187 220
45
R186 220
44
R145 220
43
R165 220
42
R143 220
41
R81
CP5
4.7Kx5
R142
220
39
4.5V
4.5V
4.5V
4.5V
5.2V
5.2V
R251
38
1K
VDD
XXX
XXX
XXX
AVDD
RECT
R139 100K
LOG
R136 220
DIFF
33
R130 220
DUAL T
RECT
32
CONTROL
R131 220
31
VOA
VOA
VOA
RECT
LOG
DIFF
XXX
XXX
RECT
VOA
VOA
VOA
XXX
XXX
LPF
VCC
4.5V
4.5V
4.5V
+
+
+
+
+
+
+
AVDD
30V
+5.6V
+5.6V
+25V
+15V
15V
30V
+5.6V
+25V
+15V
15V
Y
Z
AA
CP2
IC7
4.7Kx11
0V
REMOTE
u-COM
2.3V
2.5V
CP3
10Kx10
4.8V
X4
C133
3.64
47u25
MHz
+
C136
0.1
0V
4.8V
50
0V
F-RELAY
4.7V
49
CS-RELAY
M CLOSE: 4.7V
48
MCLOSE
M OPEN: 4.7V
47
MOPEN
OPEN: 4.8V
4.8V
46
AVDD
VDD
CLOSE: 0.2V
45
DOOR2(CLOSE)
4.9V
44
DOOR1(OPEN)
4.9V
43
TAPE2/ADP
42
VOL DATA
4.9V
41
+10dB ATT
0V
IC6
MAIN u-COM
(BOTTOM VIEW)
40
VSS
0.2V
39
REM IN
0V
38
DOOR LED
2.9V
37
DATA
2.4V
36
RDS
CLK
4.9V
35
AVREF0
4.8V
34
AVDD
0.9V
33
RDS
SLEVEL
5.2V
32
SD
5.2V
31
STEREO
CP7
100Kx4
4.8V
C122
R262
C117
0.01
4.7M
1000P
R121
10K
R114
R112
100K
10K
R183
X1
10K
C118
5MHz
D6
D5
0.01
R221
10K
RESET
Q12
R220
4.8V
1K
+
0V
+
+5.6V
+25V
+15V
15V
AB
AC
AD
0V
CP4
100Kx14
0.7V
81
1.3V
SEG9
82
1.3V
SEG8
83
1.3V
SEG7
84
1.3V
SEG6
85
1.0V
SEG5
86
0.7V
SEG4
87
SEG3
FL
0V
88
0V
R195
SEG2
88
100K
0V
0.3V
89
SEG1
89
R196
0.3V
1K
90
GRID1
91
0.3V
GRID2
91
Q17
92
0.3V
GRID
GRID3
92
DRIVE
93
0.3V
GRID4
93
94
0.3V
GRID5
94
95
0.3V
FL
GRID6
95
96
0.3V
GRID7
96
97
0.3V
GRID8
97
98
0.3V
GRID9
98
99
0.3V
GRID10
99
100
0.3V
0V
GRID11
100
1.1V
1.7V
C114
C113
C112
C111
100P
100P
100P
100P
R104
R103
R102
R101
10K
10K
10K
10K
D15
D14
D13
81
D16
82
C195
1u50
+
D46
38
39
30V
30V
+5.6V
+25V
+25V
+15V
15V
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