Read Sony CFD-E55 Service Manual online
CFD-E55
– 27 –
– 28 –
6-5.
BLOCK DIAGRAM – MAIN Section (TYPE D) –
REC/PB EQ AMP
IC301
SOUND CONTROL,
ELECTRICAL VOLUME
IC302
POWER
AMP
IC303
05
C
FROM
TUNER SECTION
(Page 22)
G
FROM POWER
SUPPLY SECTION
(Page 30)
•
SIGNAL PATH
: CD PLAY
: TUNER (FM/AM)
: TAPE PLAY
: TAPE RECORD
R-CH: Same as L-CH.
SHIFT
CLOCK
Q503
Q503, 504
SHIFT CLOCK
Q504
MODE CHECK
SWITCH
Q505
X501
4.19MHz
R-CH
MEGA BASS
CONTROL SWITCH
Q303
IN2
OUT2
L IN
L OUT
S609, 610
Q313
Q312, 313
ISS SWITCHING
VREF
L.LO
MIC IN
L.CD
L.RAD
VREF
VREF
COM 5V
L.IN
L-CH
R-CH
XT
AL
EXT
AL
D
ATA
CLK
LA
T
KEY1
KEY2
KEY3
RADIO
TAPE
REC
29
32
31
19 20 18
VC
23
BC
21
27
25
LED
4
26
R-DATA
R-CLOCK
R-LATCH
R-COUNT
R-DATA
R-CLOCK
R-LATCH
R-COUNT
17
15
16
B-MUTE
67
C-MUTE
68
ISS2
77
ISS1
76
14
17 15 21
6
20
31
24
POR
T1
12
11
5
L.RO
4
22
24
13
L-CH
R-CH
TUNER L-CH
R-CH
R-CH
R-CH
MUTE
P-CON
MUTE
CNP304 (1/2)
1
3
CNP301
BH301
HRP301
(REC/PB)
HE301
(ERASE)
2
CNP304 (2/2)
5
BH302
(1/2)
1
BH302 (2/2)
2
3
CNP303 (2/2)
2
3
CNP305 (1/4)
1
2
5
BH501 (1/4)
1
2
5
7
7
TAPE
69
6
6
A-MUTE
66
10
10
71
3
3
CNP306 (1/3)
2
BH502 (1/3)
2
7
7
9
9
6
6
1
1
CNP303
(1/2)
(1/2)
4
4
1
B
FROM
CD SECTION
(Page 20)
CD-ON
F
TO POWER
SUPPLY
SECTION
(Page 29)
TO CD
SECTION
(Page 20)
TO TUNER SECTION
(Page 22)
C-MUTE
B-MUTE
A
D
TO
TUNER
SECTION
(Page 22)
(Page 22)
E
MAIN BOARD (2/3)
KEY 1 BOARD (1/2)
KEY 1 BOARD (2/2)
POWER BOARD (1/2)
REC SW BOARD
LCD BOARD (2/3)
LED BOARD
4
3
3
1
2
CNP302
2
4
3
PB
EQ AMP
MONITOR
AMP
MATRIX
SOUND
CIRCUIT
TONE
CONTROL
CIRCUIT
LINE MUTE
SWITCH
Q301
MIXING
AMP
Q302
CONTROL
BUZZER
MUTE
5
POWER
AMP
STANDBY
SWITCH
VOLUME
CONTROL
CIRCUIT
MIC
AMP
REC
EQ AMP
BIAS OSC
Q311
CD ON
SWITCHING
Q363
REFERENCE VOLTAGE
GENERATOR
LOGIC CIRCUIT
DET
ALC
BUFFER
BUFFER
T311
BIAS OSC
Q312
BH603
(1/2)
4
5
2
6
3
1
2
BH602
(1/3)
BH605
(1/3)
(1/3)
BH605
(2/3)
4
3
3
BH608
(1/2)
(1/2)
2
3
4
BH608
(2/2)
1
1
4
3
6
1
CNP307
(1/2)
BH353
(1/2)
(1/2)
1
1
CNP352
SP101
(L-CH)
(L-CH)
SP201
(R-CH)
1
2
J301
(HEADPHONE)
i
4
3
X502
32.768kHz
TX
TEX
73
74
MODE CHECK
28
SEG0
–
SEG22
LIQUID CRYSTAL
DISPLAY
LCD501
LED DRIVE
Q502
42
–
64
COM0
–
COM3
38
–
41
SYSTEM CONTROLLER
IC501 (2/3)
BH504
2
4
1
3
4
S617, 618
S601 – 606
S619 – 624
S614, 615
S611 – 613
OPR/BATT B+
CNP501
BH601
B+
R-CH
R-CH
D321
D322
S301 (1/2)
(REC/PB)
L-CH
REC
VCC
R-CH
VREF
ST
ANDBY
REC
V
-D
ATA
V
-CLOCK
V
-LA
TCH
BUZZER
ISS 2
ISS 1
7
13
19 20 18
3
REC
PB
S301 (2/2)
(REC/PB)
REC
PB
CD
+
D602
ALARM
S601
S602
ALARM
S619 BAND
S620
VOL
S621
S622
S623
PRESET
S624 AUTO PRESET
S617 POWER
S618 STANDBY
–
+
–
–
+
+
CLOCK
TIMER
S603
S606
S604
SLEEP
S611
S612
CLOCK
MEGA BASS
S613
START/STOP
SOUND
S609
x
S610
u
S614 .
S615 >
DISPLAY
MEM ENT
S605
PLAY MODE
MONO/ST
ISS
D601
POWER
BH603
(2/2)
(2/2)
3
BH602
(2/3)
(2/3)
1
CNP601
1
2
2
BH607
BH604
1
BH602
(3/3)
2
BH606
2
BH605
(3/3)
(3/3)
2
KEY 2
BOARD
KEY 3
BOARD
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