Read Sony CFD-E55 Service Manual online
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6-6.
BLOCK DIAGRAM – POWER SUPPLY Section –
CFD-E55
05
T901
POWER
TRANSFORMER
P-CON
RST
RADIO
BACK UP B+
D909
POWER AMP
(IC303) B+
D908
MOTOR BRAKE
SWITCH
Q366
S303
(MOTOR ON/OFF)
S304
(TAPE PLAY)
M301
(CAPSTAN/REEL)
B+ (VDD S.W)
30
21
REG CHK 80
DC1 22
DC2 23
DC3 24
70
79
CNP309
BH501
(4/4)
1
2
11
5
6
RECT
D901 – 904
+5V
REGULATOR
Q354
B+ SWITCH
Q351, 352
REGURATOR
Q374
CD B+ SWITCH
Q702, 703
+6V
REGULATOR
Q353
+5V
REGULATOR
IC502
AC, BATTERY
CHECK
Q501
RESET SIGNAL
GENERATOR
IC503
AC, BATTERY
CHECK
Q373
AC, BATTERY
CHECK
Q375
TC-PLAY
65
9
MOTOR ON
TC-PLAY
MOTOR ON
3
4
M
M
6
5
BH354
1
4
3
6
5
CNP308
1
4
3
J901
AC IN -
CNP351
9V
4.5V
DC2
DC3
GND
2
3
4
5
1
1
2
BH901
BH902
3
2
1
BATT (+)
BOARD
BATT (–)
BOARD
D363
D362
D361
D910
D907
AC-HI
BH353
(2/2)
(2/2)
7
CNP307
(2/2)
7
6V
BH351
3
CNP704
PVDD
CD MOTOR/COIL
DRIVER (IC702) B+
DVDD
CD SECTION B+
ELECTRICAL VOLUME,
SOUND CONTROL
(IC302) B+
RADIO 6V
TUNER SECTION B+
COM 5V
REC/PB EQ AMP (IC301),
TUNER SECTION B+
VT B+
PLL L.P.F. CIRCUIT B+
3
BH701
(3/3)
(3/3)
4
6V
1
1
5V
8
8
5V
5
5
VDD (S.W)
6
CNP305
(4/4)
(4/4)
11
9
6
P-CON
U-COM (VDD)
DC1
DC2
DC3
DRY BATTERY
SIZE “D”
(IEC DESIGNATION R20)
6PCS. 9V
(FOR POWER SUPPLY)
DRY BATTERY
SIZE “AA”
(IEC DESIGNATION R6)
3PCS. 4.5V
(FOR BACK UP)
DC LEVEL DETECT
Q367, 370
DC LEVEL DETECT
Q368, 371
DC LEVEL DETECT
Q369, 372
MOTOR DRIVE
Q364, 365
SYSTEM CONTROLLER
IC501 (3/3)
POWER BOARD (2/2)
CD BOARD (2/2)
MAIN BOARD (3/3)
G
TO MAIN SECTION
(TYPE A: Page 24)
(TYPE B, C: Page 26)
(TYPE D: Page 28)
P-CON
CD-ON
TUNER B+
SWITCH
Q361, 362
CNP305
(2/4)
(2/4)
4
8
RADIO
F
FROM MAIN SECTION
(Page 27)
BH701
(3/3)
(3/3)
5
CD-ON
F
FROM MAIN SECTION
(TYPE A: Page 23)
(TYPE B, C: Page 25)
CNP305
(3/4)
(3/4)
REG
CNP306
(2/3)
(2/3)
8
P-CON
5
OPR/BATT
OPR/BATT B+
CNP306
(3/3)
(3/3)
3
U-COM (VDD)
10
DC1
11
DC2
12
DC3
BH501
(2/4)
4
8
BH501
(3/4)
BH502
(2/3)
8
5
BH502
(3/3)
3
10
11
12
LCD BOARD (3/3)
(TYPE D)
(TYPE A, B, C)
(TYPE C, D)
• Circuit Boards Location
KEY 2 board
KEY 1 board
LCD board
REC SW board
BATT (–) board
BATT (+) board
MAIN board
KEY 3 board
POWER board
CD MOTOR board
CD board
LED board
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