
CHAPTER 8. CIRCUIT DIAGRAM & PWB LAYOUT
8 – 1
8
7
6
5
4
3
2
1
A
B
C
D
1
2
3
4
5
6
7
8
D
C
B
A
VCH
+5V
VDD
R121
180
C80
1000uF
16V
ZD2
PTZ6.2A
D4
1SR154-400
D5
1SR154-400
L1
220uH
POWER SUPPLY(MAIN PWB)
R111
10
R112
3.6KF
D6
SFPL52V
6
5
2
3
4
1
7
8
IC6
KA34063A
Q23
C4153
HEAT SINK
C266
100uF
50V
1
2
CN8
PS CN
+24V
F1
FUSE
T800mA/250V
FROM PS PWB
+24V
GND
C85
220P
R113
1KF
C84
0.1uF
50V
VBT
R120
150
C82
330uF/16V
C81
330uF/16V
C86
0.1uF/50V
2
1
CN9
BTCN
+5V
/P0FF
3
2
1
8
4
IC7A
KIA393F
3-8D
R118
56K
+24V
D7
1SS353
R119
2.7K
5
6
7
8
4
IC7B
KIA393F
+24V
<P-OFF CIRCUIT>
C83
1u/50V
R117
2.7K
R114
8.2KG
R115
15KG
R116
9.1KG
ZD1
UDZ5.1B
C87
1000P
1/10
7-7B
8-8C
6-2C
Summary of Contents for ER-A450
Page 51: ...MAIN PWB LAYOUT 1 SIDE A 8 15 ...
Page 52: ... 2 SIDE B 8 16 ...
Page 53: ...PS PWB FRONT DISPLAY PWB POP UP DISPLAY PWB 8 17 ...