Block Diagram - Main Section - Sony CFD-E55L Service Manual

CFD-E55L
Q Q
6-3. BLOCK DIAGRAM – MAIN Section –
3 7 6 3 1 5 1 5 0
MAIN BOARD (2/3)
CNP304 (1/2)
1
L-CH
VREF
B
3
R-CH R-CH
FROM
CD SECTION
(Page 18)
TUNER L-CH
C
FROM
TUNER SECTION
(Page 20)
HRP301 BH301
CNP301 CNP302
(REC/PB)
3
2 L-CH 2
L-CH
4
1 4
R-CH
R-CH
R-CH
HE301
(ERASE)
VREF
PB REC
3 2 3
VREF
S301 (1/2)
(REC/PB)
T E
L 1 3 9 4 2 2 9 6 5 1 3 T311
BIAS OSC
BIAS OSC
Q312
Q313
Q312, 313
ISS SWITCHING
BH302 (2/2)
4 3
TO POWER
SUPPLY
4 3
SECTION
CNP304 (2/2)
CNP303 (2/2)
(Page 23)
5
F
CD-ON
TO TUNER SECTION
(Page 20)
4
A
C-MUTE
TO CD
B-MUTE
SECTION
(Page 18)
5 1 2
7
5 1 2 7
68 77 76
TO BH504
w w w
TUNER
3
SECTION
15 R-DATA
R-DATA
(Page 20)
2
R-CLOCK 16 R-CLOCK
E
4
R-LATCH 17 R-LATCH
1
14 R-COUNT
R-COUNT
05
REC/PB EQ AMP
IC301
MIC IN
MIC
13 MUTE
AMP
L.CD
24
MUTE
L.RAD
22
R-CH
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
BH302 CNP303
(1/2) (1/2)
2 2
REC
5 5
VCC
COM 5V
Q311
S301 (2/2)
(REC/PB)
PB REC
REC SW BOARD
CD ON
SWITCHING
D
Q363
CNP305 (1/4)
3 6 10
3 6 10
BH501 (1/4)
67 71 69 66
SYSTEM CONTROLLER
IC501 (2/3)
x a o
. i
– 21 –
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SOUND CONTROL,
ELECTRICAL VOLUME
IC302
MATRIX TONE VOLUME
L.LO IN2
MONITOR
20 31 SOUND CONTROL CONTROL
AMP
CIRCUIT CIRCUIT CIRCUIT
CONTROL
19 20 18 23 21
MEGA BASS
CONTROL SWITCH
Q303
LINE MUTE
SWITCH
Q301
Q Q
3 7 6
CNP306 (1/3)
2 7 9 6
2 7 9 6
BH502 (1/3)
13 19 20 18
32 31 73 74 28
X502
X501
32.768kHz
4.19MHz
Q503
Q504
SHIFT
29
CLOCK
Q503, 504 MODE CHECK
SHIFT CLOCK SWITCH
Q505
LIQUID CRYSTAL
DISPLAY
u 1 6 3 LCD501
y
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2 4
8 9 9
POWER BOARD (1/2)
7
POWER
STANDBY
CNP307 BH353 SWITCH
(1/2) (1/2)
1 1
L IN
POWER
+
24 8
AMP
R-CH
RIPPLE
FILTER
FILTER
BUZZER
12 5
MUTE
9 9
SWITCH
D322
MIXING
AMP
R-CH
Q302
D321
3 1 5 1 5 0 8 9
1
KEY 2
BOARD
KEY 1 BOARD (1/2)
1
BH603 BH605 BH605
(1/2) (1/3)
2 6
3
S617
OPERATE
4 25 26 27
CNP501 BH601
B+ BH602
6 1 (1/3)
5 2 4 4
4 3
S601 ALARM
S602 TIMER
S609, 610
S603 SLEEP
DSPL S609 x
S604
ENT MEM S601 – 606
S610 u
PLAY MODE
S605 MONO/ST
ISS
m
CNP601
SOUND
S606
3 4 3 3
OPR/BATT B+
c o
. 1 6
LED DRIVE
Q502
D602
ALARM
LCD BOARD (2/3)
– 22 –
2
8 9 9
• SIGNAL PATH
: CD PLAY
P-CON
G
: TUNER (FM/AM)
FROM POWER
: TAPE PLAY
SUPPLY SECTION
(Page 24)
: TAPE RECORD
AMP
IC303
R-CH: Same as L-CH.
R-CH
J301
L OUT
3 i
(HEADPHONE)
BH352
1
2
MUTE
Q341
4
3
2 1 3 4
CNP310
CNP311
2 1 3 4
2 4 9 8 2 9 9
SP201 SP101
(R-CH) (L-CH)
KEY 3
BOARD
KEY 1 BOARD (2/2)
BH603
(2/3) (2/2)
BH604 BH606
7 1 1 2
S611
CLOCK
S612
MEGA BASS
S613
S619 – 624
START/STOP
BH602 BH602 BH605
(2/3) (3/3) (3/3)
TUNE
1 2 TIME SET
1 2
S614, 615
S611 – 613
S614 . –
S615 > +
RADIO
S619
BAND
BH607
+
1 1 S620
VOL
–
S621
D601
OPR/BATT S622
–
2 2
PRESET
+
S623
S624 AUTO PRESET
LED BOARD