Service manual

PC-UM10M
XE-A403 CIRCUIT DIAGRAM AND PWB LAYOUT
– 20 –
7/7
C D
B A
C
D
B A
87654321 8
7654321
PRINTER DRIVER
EFCB322513TS(FB14-FB21)
TM1
TM
VH
/JPES /RPES
/RPFA /RPFB /RPFC /RPFD
/JPFA /JPFB /JPFC /JPFD
VRCOM VJCOM
PHUPS
P91 P91 /S2
VREF
/S4
JAS JBS JCS JDS
RAS RBS RCS RDS
P91
/S3
VHCO
M
/RES
STR
B1
STR B3
VCC
VCC VCC
VCC
+2 4V
+24V
+
24V
+2 4V
VCC
VCC
D2
1SS355
C70
1000pF
Q3 KRC111S
FB22
EFCB32251
3
T
S
C71
330pF
D24
1SS35 5
R78 4.7K R79 4.7K
C67
100pF
C77
330pF
C68
0.1uF
F1
T1.6A/250V
R80 240
FB13
EFCB322513
TS
FB18
FB28
EFCB322513TS
IC15
KIA431F
1 3
2
C69
10uF/50V
R75 18KF
FB19 FB20
R88 100 K
FB15
IC17
STA471A
2 4 6 8
1
10
3 5 7 9
R76 4.7K
FB21 FB16
C75 0.1uF
R93
15 K
FB26
EFCB322513
T
S
R77 20K
R89 100 K
C76 0.1uF
+ -
IC16A BA10393F
3 2
1
4
8
D26
1SS355
R82 5.6K
+ -
IC16B
BA10393F
5 6
7
4
8
FB17
R83 10K
JP1
[0 SHORT]
Q2 2SK27
31
Q7
NTD2955
+
C131
22uF/16V
C73
2200uF/35V
D23
1SS355
FB27
EFCB322513TS
FB25
EFCB322513TS
Q4
KRC111S
R91
1K
D3
1SS355
Q6
KRC111S
IC18
STA471A
2 4 6 8
1
10
3 5 7 9
D5
1SS3
55
R154
1K
R92
1K
C79
1000pF
R136 (47 K)
FB14
D25
1SS355
FB23
EFCB322513
T
S