Block Diagram - Main Section - Sony cfd-e75 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
6-3. BLOCK DIAGRAM – MAIN Section –
TC BOARD
CNP303 (1/4)
A
3 CD IN L
VREF
FROM CD
SECTION
(Page 19)
13
24
B
1 TU IN L
22
FROM TUNER
SECTION
(Page 20)
HRP301
(REC/PB)
L-CH
R-CH
R-CH
HE301
(ERASE)
VREF
PB REC
S301 (1/2)
(REC/PB)
T E
L 1 3 9 4 2 2 9 6 5 1 3
T301
BIAS OSC
TC POWER
CN321 (2/2)
B+
2
VT
D321
11
C
R-MUTE 70 TU-MUTE
TO TUNER 8
68 TU-DATA
SECTION R-DATA
9
(Page 20)
R-CLOCK 69 TU-CLK
7
66 TU-CE
R-CE
10
R-COUNT 78 TU-COUNT
w w w
.
REC/PB EQ AMP
IC301
MIC IN
MIC
MUTE
AMP
L.CD
L.RAD MUTE
R-CH
MONITOR
AMP
BUFFER
L.IN PB
5 BUFFER
EQ AMP
L.RO
REC
4 ALC
EQ AMP
DET
LOGIC CIRCUIT
VREF
REFERENCE VOLTAGE
6
GENERATOR
17 15 21
CD B+
COM 5V
BIAS OSC
Q301
S301 (2/2)
(REC/PB)
PB REC
CN303 (4/4)
7 11
7 11
CNP322 (4/5)
67 79
SYSTEM CONTROLLER
IC801 (2/3)
x a o
y
i
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8
MAIN BOARD (3/4)
ELECTRICAL VOLUME
IC320
CN303 CNP322
(3/4) (3/5)
VIN2
5 5
L.LO
AF AMP
20 8
Q120
R-CH
LOGIC
CONTROL
4
Q Q
3 7 6 3
BUZZER H/L
CONTROL
Q431
12 13 16 3
71
32 31 73 74
X802
X801
32.768kHz
4.19MHz
Q804
Q803
SHIFT
29
CLK
Q803, 804
SHIFT CLOCK
u 1 6 3
.
21 21
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2 4
9 9 8
POWER BOARD (1/2)
D394
7
POWER
AMP
IC390
STANDBY
SWITCH
CN322 CNP391
(1/2) (1/2)
VOUT2
L OUT
3 3 L IN
+ POWER
7 11
AMP
D390
5 MEGA BASS
CONTROL
Q291
Q122
D320
MUTING
2 2
R-CH
1 5 1 5 0 8 9 2 4
KEY POWER BOARD
15
CNP802 CN401 CNP401
6 6
JOG-A 26
JOG-B 25
5 5
23 24
CNP402
4 4
S401
3 3
POWER
S402
STANDBY
S403
RADIO BAND
AUTO PRESET
S401 – 405
S404
TUNE
m
–
m S405
TUNE
M
+
c o
1 1
OPR/BATT B+
CFD-E75
2
9 9
TC POWER
B+
R-CH
J301
5 i
(HEADPHONE)
1
SP101
2
(L-CH)
4
SP201
3
(R-CH)
CNP392
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
: CD PLAY
9 8 2 9 9
: TUNER (FM/AM)
: TAPE PLAY
: TAPE RECORD
JOG BOARD
CN404
RE401
2
ROTARY
(JOG DIAL)
ENCODER
1
5
S407
CN403
4
ALARM
2
1
MENU
2
S406
1 DSPL
ENT MEM
CN402
S408 S409
2 2
x u
S410
VOLUME –
S411
VOLUME +
S412
S408 – 413
MEGA BASS
S413
MODE
KEY VOLUME BOARD
OPT/BATT LED
BOARD
D401
OPR/BATT