Sony CFD-E55 Service Manual page 20

CFD-E55
6-3. BLOCK DIAGRAM – MAN Section (TYPE A) –
MAIN BOARD (2/3)
CNP304 (1/2)
1
L-CH
VREF
B
3
R-CH R-CH
FROM
CD SECTION
(Page 20)
TUNER L-CH
C
FROM
TUNER SECTION
(Page 22)
HRP301 CNP301 BH301 CNP302
(REC/PB)
2 3 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)
T311
BIAS OSC
BIAS OSC
Q311
Q312
Q313
Q312, 313
ISS SWITCHING
BH302 (2/2)
2 3
TO POWER
SUPPLY
2 3
SECTION
CNP304 (2/2)
CNP303 (2/2)
(Page 29)
5
F
CD-ON
TO TUNER SECTION
(Page 22)
4
A C-MUTE D
TO CD
B-MUTE
SECTION
(Page 20)
5 1 2 7
5 1 2 7
68 77 76 67
BH504
TO
TUNER
3
SECTION
R-DATA
R-DATA 15
(Page 22)
2
16 R-CLOCK
R-CLOCK
E
4
R-LATCH 17 R-LATCH
1
14 R-COUNT
R-COUNT
05
http://www.jdwxzlw.com/?fromuser=SNvÛ ~ ô O î
REC/PB EQ AMP
IC301
MIC IN
MIC
13 MUTE
AMP
L.CD
24
L.RAD MUTE
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)
1 4
REC
4 1
VCC
COM 5V
S301 (2/2)
(REC/PB)
PB REC
REC SW BOARD
CD ON
SWITCHING
Q363
CNP305 (1/4)
6
3 10
3 6 10
BH501 (1/4)
71 69 66
SYSTEM CONTROLLER
IC501 (2/3)
– 23 –
[¶ u 5~ô O î • De™•Qÿ QM•9N•}TyÍ ~ ô O î • De™
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
CNP306 (1/3)
2
7 9 6
2 7 9 6
BH502 (1/3)
13 19 20 18
32 31 73 74 28
B+
X502
X501
32.768kHz
4.19MHz
Q503
Q504
SHIFT
29
CLOCK
MODE CHECK
Q503, 504
SHIFT CLOCK SWITCH
Q505
LIQUID CRYSTAL
DISPLAY
LCD501
LCD BOARD (2/3)
POWER BOARD (1/2)
7
POWER
AMP
IC303
STANDBY
CNP307 BH353 SWITCH
(1/2) (1/2)
1 1
IN2
POWER
+
24 8
AMP
R-CH
RIPPLE
FILTER
FILTER
BUZZER
12 5
MUTE
9
9
MUTE
SWITCH
Q341
D322
MIXING
AMP
R-CH
Q302
D321
1
KEY 2
BOARD
KEY 1 BOARD (1/2)
1
BH603 BH605 BH605
(1/2) (1/3) (2/3)
2 6
3
S617, 618
S617
4 25 26 27
POWER
CNP501 BH601
BH602
S618
1 (1/3)
6
STANDBY
5 2 4 4
4 3
S601 ALARM
S602 TIMER
S609, 610
SLEEP
S603
S609 x
DISPLAY
S604
S601 – 606
MEM ENT
S610 u
PLAY MODE
S605 MONO/ST
ISS
CNP601
S606 SOUND
3 4 3 3
OPR/BATT B+
1 6
LED DRIVE
Q502
D602
ALARM
– 24 –
• SIGNAL PATH
: CD PLAY
P-CON
G
: TUNER (FM/AM)
FROM POWER
: TAPE PLAY
SUPPLY SECTION
(Page 30)
: TAPE RECORD
R-CH: Same as L-CH.
R-CH
J301
OUT2
3 i
(HEADPHONE)
BH352
1
2
4
3
2 1 3 4
CNP310
CNP311
2 1 3 4
SP201 SP101
(R-CH) (L-CH)
KEY 3
BOARD
KEY 1 BOARD (2/2)
BH603
(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)
CLOCK
1 1 2 2
S614, 615
S611 – 613
S614 . –
S615 > +
S619 BAND
BH607
+
S620
1 1
VOL
S621 –
D601
POWER
S622
–
2 2
PRESET
S623 +
S624 AUTO PRESET
LED BOARD