Schematic Diagram Panel Section - Sony HCD-EP404 Service Manual

HCD-EP404

6-8. Schematic Diagram PANEL Section

• See page 15 for Waveforms.
1 2
A
DISPLAY BOARD
PLAY CD
MODE
B
TUNER MEM
ENTER
TIMER
C
SEL2215S
5.7
0
2SC536N
LED DRIVE
0
D
4.8
10V
4.8
4.8
IC302
EEP ROM
E
4.8
50V 2SC536N
+5V REG
0
F
VOLUME
ENCODER
0.001
0.001
G
4.9
4.9
2SC536N
SWITCHING
H
I
• See page 29 for IC Pin Function Description.
3 4 5
TAPE TUNER
DISPLAY PRESET+ PRESET-
TUNING+ TUNING-
MUSIC MENU
MEGA BASS
PST529D
5.7 6.2
50V
0.1
IC304
0
RESET SIGNAL
GENELATOR
5.3
X302
5.4
REMOTE CONTROL
RECEIVER
6 7 8
(LIQUID CRYSTAL DISPLAY)
4.8
4.9 <5.4>
4.8
2.6 3
2.3
4.8
0.1
IC301
4.8
5,4
SYSTEM CONTROL
5,4
2.3
<4.9>
5.4
0
0<4.8>
0
4.8<0>
0
5.4
4.8
0
4.9
4.9
0.1
0.1
0.1
0.1
E B
TO TO
MAIN BOARD MAIN BOARD
(1/3) CN704 (1/3) CN402
(Page 20) (Page 20)
24 24
9 10 11
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
1.6
3.2
4.8
4.8
2.4
2.4
0.1
No mark: FM
< > : CD
SEL2215S
4.3
0
LED BOARD
0.1
2SC536N
0.1
LED
DRIVE
SEL2910D SEL2910D
0.1
12 13
TO
D
MAIN BOARD
(2/3)
CN705
(Page 21)
TO
C
MAIN BOARD
(2/3)
(Page 21)
SEL2910D