Block Diagram - Main Section - Sony CFD-E75L Service Manual

6-3. BLOCK DIAGRAM – MAIN Section –
TC BOARD
CN303 (1/4)
REC/PB EQ AMP
A
3 CD IN L
VREF
FROM CD
SECTION
(Page 19) MIC IN
13
L.CD
24
B
1 TU IN L L.RAD
22
FROM TUNER
SECTION
(Page 20)
HRP301
(REC/PB)
L.IN
5
L-CH
L.RO
R-CH 4
R-CH
HE301
(ERASE)
VREF
PB REC
6
S301 (1/2)
(REC/PB)
T301
BIAS OSC
Q303
Q302
Q302, 303
ISS SWITCHING
CN303 (2/4)
1 2
1 2
CNP302 (5/5)
TC POWER
CN321 (2/2)
B+
2
VT
D321
77 76
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
IC301
MIC
MUTE
AMP
MUTE
R-CH
MONITOR
AMP
BUFFER
PB
BUFFER
EQ AMP
REC
ALC
EQ AMP
DET
LOGIC CIRCUIT
VREF
REFERENCE VOLTAGE
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
SHIFT
SYSTEM CONTROLLER CLK
IC801 (2/3)
MAIN BOARD (3/4)
ELECTRICAL VOLUME
IC320
CN303 CNP322
(3/4) (3/5)
VOUT2
VIN2
5 5
L.LO
AF AMP
20 8
Q120
R-CH
LOGIC
CONTROL
4 5
BUZZER H/L
CONTROL
Q431
12 13 16 3 15
71
32 31 73 74 23 24
X802
X801
32.768kHz
4.19MHz
Q804
Q803
29
Q803, 804
SHIFT CLOCK
21 21
POWER BOARD (1/2)
TC POWER
D394
7
POWER
AMP
IC390
STANDBY
SWITCH
CN322 CNP391
(1/2) (1/2)
L OUT
3 3 L IN
+ POWER
7 11 5
AMP
D390
MEGA BASS
CONTROL
Q291
Q122
D320
MUTING
2 2
R-CH
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
KEY POWER BOARD
CNP802 CN401 CNP401
6 6 5
JOG-A 26
4
JOG-B 25
1
5 5
2
CNP402
4 4 2
S401
3 3
OPERATE
S402
STANDBY
S403
RADIO BAND
AUTO PRESET
S401 – 405
S404
TUNE
m
–
S405
TUNE
M
+
1 1
OPR/BATT B+
CFD-E75L
B+
R-CH
J301
i
(HEADPHONE)
1
2 (L-CH)
4
(R-CH)
3
CNP392
: CD PLAY
: TUNER (FM/AM)
: TAPE PLAY
: TAPE RECORD
JOG BOARD
CN404
RE401
2
ROTARY
(JOG DIAL)
ENCODER
1
S407
CN403
ALARM
2
MENU
S406
1 DSPL
ENT MEM
CN402
S408 S409
2
x u
S410
VOLUME –
S411
VOLUME +
S412
S408 – 413
MEGA BASS
S413
MODE
KEY VOLUME BOARD
OPT/BATT LED
BOARD
D401
OPR/BATT