Block Diagram - Main Section - Sony XR-C8220R Service Manual

XR-C8220R
7-3. BLOCK DIAGRAM – MAIN Section –
CN780 (1/2)
BUS
AUDIO IN
L
R R-CH
FM-L
A
(Page 24)
AM/TIR
B
(Page 24)
TAPE-L
C
(Page 25)
BUFFER
R-CH
IC320
INPUT SELECT,
ELECTRICAL VOLUME
IC301
AUX-IN-L
42
VR
FM-IN-L
VOLUME
40 IN1
INAO1
33 32 CONTROL
AM-IN-L
39
CIRCUIT
TAPE-IN-L
41
LOUDNESS
CONTROL
CIRCUIT
R-CH
36 – 38
R-CH
20
SUB CUT
SWITCH
Q360, 362
R-CH
D351 D350
62 61
CSV
IC650
23 AOUT 15 21
SD CSV-SO
SI 14 22 CSV-CKO
ST 8 23 CSV-CE
SYSTEM CONTROLLER
NAR 22 117 CSV-NAR
RESET 17 9 CSV-RST
05 2 3
X650
4.19MHz
– 27 –
FD
TONE FADER
TIN1
VOUT TCO1 IN1
+
31 30 CONTROL 26 25 CONTROL
CIRCUIT CIRCUIT
VCT REGISTER &
BUFFER LATCH
17 16 21
REFERENCE VOLTAGE
GENERATOR (FOR BIAS)
IC302
COM +8V
ELECTRICAL VOLUME
(FOR SUBWOOFER)
IC350
BUFFER VR
VOLUME
INAO1 IN1
INP1 OUT1
17 16 CONTROL 15
CIRCUIT
SHIFT
ZC
REGISTER &
DET
R-CH
LATCH
8 9 7
66 67 68 64
MUTE 65 CONTROL SWITCH
IC600 (3/5)
DOLBC 115
TESTIN 58
TEL-ATT 79
LINE DRIVER
IC310
FNTO1
24 2 IN1 OUT1 13
REO1
23 7 IN2 OUT2 12
R-CH
SHIFT
22
R-CH
BUFFER
IC383
R-CH
12
R-CH 14 IN4
11
R-CH 15 IN3
D717
MUTING POWER AMP
MUTE SWITCH 22 MUTE
Q700, 701 Q702
4
LEVEL SHIFT
Q603
D715
– 28 –
• SIGNAL PATH
: FM
: AM (MW/LW)
: TAPE PLAY
: BUS AUDIO IN
L
CN781 (1/2)
MUTING
FRONT
Q340
LINE OUT
R
MUTING
Q430
L
CN780 (2/2)
MUTING
REAR
Q330
LINE OUT
R
MUTING
Q440
L
CN781 (2/2)
MUTING
SUB OUT
Q361
R
MUTING
Q461
CN700 (1/2)
POWER AMP
(POWER CONNECTOR)
IC700
1
OUT2+ 5 FRONT L (+)
IN2
9
OUT2– 3 FRONT L (–)
4
OUT4+ 21
FRONT R (+)
12
OUT4– 23 FRONT R (–)
2
OUT1+ 9 REAR L (+)
IN1
10
OUT1– 7 REAR L (–)
3
OUT3+ 17 REAR R (+)
11
OUT3– 19 REAR R (–)
ST-BY
15
TEST MODE
13
TEL-ATT