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K
L
SURROUND UNIT
(X08-2952-70)
1
SIGNAL LINE
GND LINE
B LINE
+B
B LINE
B
2
IC1
: YSS248
IC2
: CS4226KQG
IC3
: TC74HCU04AF
IC4
: NJM2279M
IC5
: TC9162AF
IC6
: TC9164AF
IC8-10
: TA7805SB
IC11-23,31,32
: NJM4565M
IC24
: TC7W241FU
Q1
: 2SC4081(R,S) or
2SC4116(Y,GR)
3
Q2
: 2SA1576A(R,S) or
2SA1586(Y,GR)
D1,2
: DA204U or
1SS302
D3,4
: UDZ5.1B
D5
: D2SBA20F03
D7-9
: UDZ6.2B
IC31,32
AMP
IC32
(1/2)
+15V
R311
C313
1K
4.7u50
5
8
7
+
6
R317
4
100
J5
CENTER
1
R318
10K
2
C314
1
R312
4.7u50
3
SUBWOOFER
2
+
1K
4
DVD 6CH
IC32 (2/2)
15V
INPUT
IC31 (1/2)
+15V
R301
C303
1K
4.7u50
5
8
Lch
3
7
+
6
SURROUND
R307
100
Rch
4
R308
100
2
C304
1
R302
4.7u50
3
+
1K
4
5
IC31
15V
(2/2)
A1
3.7V
3
VIDEO3
2
+5V
+5V
L1
+
1
4.9V
C34
DOLBY DIGITAL
22P
/PCM IN
J1
C31
R31
L2
0.1
47K
VIDEO2
C33
2.5V
22P
2.6V
C30
0.8V
0.01
R30
+5V
4.7K
4.9V
IC3
6
+5V
INTERFACE
CAUTION: For continued safety, replace safety critical components only with manufacturer's recommended
parts (refer to 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 resis-
tance measurements shall be carried out (exposed parts are acceptably insulated from the supply circuit)
7
before the appliance is returned to the customer.
M
N
+15V
15V
DIGITAL
+5V
IC24
3.4V
+5V
C10
330P
4.9V
81
VDD
2.4V
82
3.2V
83
SDISEL
1.8V
84
85
SDI
INPUT
INTERFACE
BUFFER
86
TESTI27
87
TESTI28
88
TESTI29
89
CONTROL
TESTI30
CONTROL
90
RESISTOR
VSS
C9
4.9V
91
VDD
0.01
92
93
94
95
96
0V
97
97
0V
98
98
0V
99
99
100
VSS
R21
220
X1
10MHz
C14
18P
R1 1M
C13 18P
C1
0.01
+5V
DIGITAL
VIDEO2
R27
C32
2.2K
0.1
C29
R26
C39
22P
2.2K
0.1
R32
4.7K
DIGITAL
VIDEO3
3.7V
4.7V
O
P
+15V
15V
R15
220
+5V
+5V
R36 1K
R9 220
C6
C5
R8 220
1000P 1000P
+5V
u-COM
INTERFACE
CRC
50
VSS
49
SDOCKSEL
48
2.1V
47
BIT STREAM
2.1V
SDO
46
24bit DSP
READING
INTERFACE
1.1V
45
PROCESSOR
44
DIGITAL
TESTI20
SL,SRch
43
TESTI19
42
TESTI18
DIGITAL
CONTROL
DELAY-RAM
41
4.1V
C.LFEch
VDD
40
VSS
39
38
OPERATION CLOCK
37
(20MHz)
36
35
34
PLL
33
4.9V
32
31
4.9V
VDD
IC1
DOLBY
DIGITAL
(AC-3)
C3
0.01
C2
0.01
+5V
+5V
+5V
The DC voltage is an actual reading measured with a high impedance type voltmeter with a cassette
loaded at playback mode. The measurement value may vary depending on the measuring instru-
ments used or on the product. Bias circuit DC voltage is measured while in the record mode.
DOLBY and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation. Noise
reduction circuit made under license from Dolby Laboratories Licensing Corporation.
Q
R
+15V
15V
+5V
+5V
+
PLL
1
DIGITAL
2
FILTERS
0V
3
0V
4
4.3V
5
4.4V
6
0V
7
R25
4.5V
8
2.2K
R19
220
0V
9
ANALOG LOW PASS
0V
10
INPUT
97
AND OUTPUT STAGE
MUX
0V
11
98
99
+5V
+5V
Q2
R72
4.7K
R70
100
Q1
R107
C111
1K
10u50
+
D1
R108
1K
D2
+
C112
10u50
5V AVR
5.0V
+
11.1V
IC8
R68
D7
2.2 1/4W
OUT IN
+5V
+B
GND
+
+
5V AVR
5.0V
D8
11.1V
IC9
R66
2.2 1/4W
OUT
IN
+5V
+B
GND
+
+
5V AVR
5.0V
D9
11.1V
IC10
R67
1 1/4W
OUT
IN
+5V
+B
GND
+
+
S
T
+15V
15V
VD+
33
32
SERIAL AUDIO
DATA INTERFACE
31
DIGITAL FILTERS
30
29
28
MUX
27
DEM
26
25
24
23
VA+
2.3V
2.3V
+15V
15.0V
IC11
8
(1/2)
5
6
7
R105
100
BUFFER
R106
100
2
1
3
IC11
R61
-14.8V
4
2.2
(2/2)
+B
15V
15V
1/4W
R62
10
+B
1/4W
D5
R63
10
+B
+B
+B
1/4W
C73
C72
+
0.22 0.22
L3
2
1
CN3
C
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