Read Sony CMT-VC1 / HCD-VC1 Service Manual online
HCD-VC1
15
15
5-2.
BLOCK DIAGRAM – MAIN Section –
TU1
TUNER PACK
L
R
1
2
4
9
8
10
7
31
30
17
3
LINE
OUT2
VOL2
OUT2
TREBLE
LOGIC
MIDDLE
BASS
INPUT SELECT SWITCH,
MIX, TONE CONTROL,
ELECTRICAL VOLUME
ELECTRICAL VOLUME
IC323
12
13
2
14
15
88
23
5
8
19
18
25
AUDIO IN
MD (VIDEO)
SJ302
HRPE901
(RECORD/PLAYBACK/ERASE)
R-CH
(ERASE)
R-CH
L-CH
1
3
2
REC/PB SWITCHING
IC402
REC/PB AMP, EQ AMP
IC401
(REC)
(PB)
(SW)
R-CH
R-CH
4
23
24
20
R-CH
R-CH
ALC
16
14
REC OUT L
PB L
REC
IN L
IN L
B+
(+8V)
BIAS
OSC
T401
REC BIAS SWITCH
Q402, 403
BIAS OSC
Q401
BIAS
TRAP
TRAP
T403
CD L-CH
S-ACK
S-REQ
S-DO
S-DI
S-CLK
S-RST
S-CLK
S-RST
DATA
CLK
SDA
(SCK)
95
11 17 14 100
E
(Page 14)
MUTING
Q200
R-CH
B+ (+8V)
MUTING DRIVE
Q330
4
10
9
14
+
+
–
–
SJ301
L
R
SPEAKER
IMPEADANCE
USE 6 – 16
Ω
R-CH
R-CH
J301
HEADPHONE AMP
IC324
MUTING
Q815, 817
MUTING DRIVE
Q312, 313
MOS GAIN &
LEVEL SHIFT
LEVEL SHIFT
ING STAGE
MOS
OUTPUT
STAGE
SHORT
CIRCUIT
PROTECTION
TUNER
D856, 857
IN+
IN–
STANDBY/MUTE
MUTE
STBY
B
(Page 16)
REG CON
D
(Page 16)
REC/PB
POWER AMP
IC201
R-CH
97
22
24
93
92
X802
32.768KHz
32.768KHz
39
4
40
X801
4.19MHz
CAPSTAN/REEL
MOTOR DRIVE
Q601, 602
10
1
6
32
TRIGGER
PLUNGER DRIVE
Q603, 604
M
M
TAPE END DETECT
SENSOR
(TAPE DECK BLOCK)
• SIGNAL PATH
: TUNER
: CD PLAY (ANALOG OUT)
: CD PLAY (OPTICAL OUT)
: TAPE (PLAY)
: TAPE (RECORD)
: MD
OUT
FM ANT
ANT GND
ANT GND
AM ANT
L-CH
R-CH
R-CH
TUNED
DI
CK
CE
DO
R-CH
B IN L
A IN L
6
3
8
10
SYSTEM CONTROLLER
IC801 (1/2)
C2
B1
D2
E2
(S-SI)
(S SO)
TUNED
(TU-DATA)
(TU-CLK)
(TU-CE)
(TU-COUNT)
TU ON
REC/PB
(S-CLK)
(MPEG-RST)
(S-REQ)
(S-ACK)
AU-MUTE
AMP-MUTE
(MIC CHECK)
TEX
TX
EXTAL1
MOT-CON
XTAL1
SOL-CON
TAPE-END
T-MODE
TC SW
PHONES
• R-CH : R-ch is omitted due to same as L-ch.
A
(Page 14)
96
87
L-MUTE
REC-MUTE
MUTING
Q407
MUTING
Q414
R-CH
R-CH
LINE
AMP
AMP
MIC AMP
11
R-CH
D401
R-CH
R-CH
LED DRIVE
Q854
FM
75
Ω
AM
ANTENNA
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