Service manual

ER-A410U/ER-A420U CIRCUIT DIAGRAM AND PWB LAYOUT
– 25 –
A B
C D
8 7 6 5 4
3
2 1
12345678
D C
B A
PRINTER DRIVER 6/7
EFCB322513TS(FB2-FB9)
G
S
D
TM1
TM
VH
/JPES /RPES
/RPFA /RPFB /RPFC /RPFD
/JPFA /JPFB /JPFC /JPFD
VRCO
M
VJCO
M
PHUPS
P9
1
P9
1
/S2
VRE
F
/S4
JAS JBS JCS JDS
RAS RBS RCS RDS
P9
1
/S3
VHCOM
/RES
VCC
VCC VCC
VCC
+2
4V
+24
V
+2
4V
+2
4V
VCC
D9
1SS
355
Q5
KRC111
S
C99
10
00pF
FB10
EFCB322
513TS
C103
33
0pF
R111
4.7K
C97
10
0pF
R102
4.7K
C102
33
0pF
C98
0.1uF
F4
T1.6A/25
0V
R103 24
0
IC29
KIA
431F
1 3
2
FB15
EFCB322
513TS
FB6
FB1
EFCB32
2513TS
C101
10uF/50V
FB7
R99
18KF
FB8
IC30
ST
A471A
2 4 6 8
1
10
3 5 7 9
FB3
R106 10
0K
FB9
R100
4.7K
FB4
C95
0.1uF
FB13
EFCB32
2513TS
R110
10
K
R101 20
K
R107 10
0K
+ -
IC28B
BA1
0393F
5 6
7
4 8
C96 0.1uF
R104
5.6K
FB5
+ -
IC28A
BA1
0393F
3 2
1
4 8
R105
10
K
Q3 C241
2K
Q4
MTD2
955V
C104
2200uF/35
V
FB14
EFCB322
513TS
FB12
EFCB322
513TS
Q6
KRC111
S
D10
1SS
355
R108
1K
Q7
KRC111
S
D8
1SS
355
IC31
ST
A471A
2 4 6 8
1
10
3 5 7 9
R109
1K
C100
10
00pF
R112
(47K
)
FB2
FB11
EFCB322
513TS