Sony HCD-EP303 - Page 20

2020
HCD-EP303
DISPLAY/POWER Section
LD621
LIQUID
CRYSTAL
DISPLAY
COM0
ı
COM3
KEY R0
ı
KEY R3
Q1
ı
Q7
X
AMP SECTION
H
X
TUNER SECTION
E
X
AMP SECTION
G
X
TUNER SECTION
F
S0
ı
S31
44 REMOTE
X602
6MHz
58 X1
59 X2
31CD
IC601 (3/3)
SYSTEM CONTROLLER,
LIQUID CRYSTAL DISPLAY DRIVER
29TUNER
51PSW
32TIMER STATUS
35SURROUND
6312/24H SELECT
68CPU RESET
6V
CD 8V
Q116
B+ SWITCH
Q602
SWITCH
Q603
SWITCH
Q604
SWITCH
TUNER +9V
D317
D307
D310
D308
D311
Q308, 309
+8V
REGULATOR
Q313
+9V
REGULATOR
Q312
+6V
REGULATOR
ZD401
+6V
REGULATOR
9V
D401 – 404
RECT
D411 – 414
RECT
Q401,402
POWER ON/OFF
RELAY DRIVE
Q310,311
REGULATOR
CONTROL SWITCH
TR402
POWER
TRANSFORMER
(SUB)
D405 – 408
RECT
RL401
AC IN
TR401
POWER
TRANSFORMER
(MAIN)
REM601
REMOTE CONTROL
RECEIVER
1
53
SW601 - 615, 621, 622
KEY MATRIX
DPSW2/SLEND
IC301
(POWER AMP)
IC603
RESET SIGNAL
GENERATOR
D611 - 615
2
3
4 - 7,
14 -12
IC602
KEY CONTROL
DATA
CLOCK
SW600
Z PUSH
OPEN/CLOSE
D607
D608
D603
D618
D648
D619
TIMER
64-67
21-24
69-80,
1 -20
DC_15V
DC_12V
MUTE
PLLCE
6V
10kHz
9kHz
SW301
(AM FREQ STEP)
D1 - D3
(LCD BACK LIGHT)