Sharp XE-A303 (serv.man4) Service Manual ▷ View online
XE-A303 (V)
CIRCUIT DIAGRAM AND PWB LAYOUT
– 22 –
PRINTER DRIVING
5/7
C
D
B
A
C
D
B
A
876
5
4
321
8
76
5
4
321
NOT INSTA
L
L
modified 06,01
HUS0
SES
D
0
PHUS0
SES
R
1
SES
D
1
SES
R
0
1
S
U
H
P
1
S
U
H
STP#
A
0
STPB
0
STPA
0
STPB
1
STPA
1
STP#
A
1
STP#
B
0
STP#
B
1
PES0
1
HUS0
1
PE
S
1
1
SES
R
0
SES
D
0
PHUS0
SESR
1
SESD
1
PHUS1
HUS1
1
PH01
1
STP#
B1
6
STPB
0
6
STPB
1
6
I10
1
I01
1
I00
1
STP#
A
0
6
I1
1
1
STP#
A1
6
STP#
B
0
6
PH02
1
PH12
1
STPA
0
6
STPA
1
6
PH1
1
1
VCC
7
VCC
VCC
VCC
VCC
VCC
VCC
VCC
24V
VCC
VCC
MOT
O
V
MOT
O
V
VCC
VCC
VCC
IC17B
74HC14
3
4
14
7
+
C83
100uF/50V
1
2
R191
1OHM 1W 1.0% F
C91
470
p
R184
3.3K
D28
RB160L-6
0
1
2
+
C85
100uF/50V
1
2
D22
1
2
C70
0.1uF
+
-
IC15B
BA10
3
9
3
5
6
7
8
4
R186
56K
+
C82
100uF/16V
1
2
C74
0.1uF
C77
0.1uF
+
-
IC15A
BA103
9
3
3
2
1
8
4
C87
470p
C73
0.1uF
D25
1
2
IC18
JRC NJM7824
1
3
2
IN
OUT
GND
D23
1
2
C71
0.1uF
R169
56
K
C90
4700PF
F4
T1.0A/25
0
V
R175
2.7K F(1%)
R172
3.3K
R167
3.3K
R174
1 OHM 1W 1.0% F
R178
2.2K
TP5
TEST
P
O
INT
R40
1K
+
C84
100uF/50V
1
2
R163
1K
R173
1OHM 1W 1.0% F
D24
RB160L-
6
0
1
2
R190
1OHM 1W 1.0% F
C80
4700P
F
R176
1.1K F(1%)
R168
56
K
C92
4700PF
R189
3.3K
R180
1K
R4
10K
R164
270
R193
1.1K F(1%)
R179
2.2K
+
C78
100uF/16V
1
2
R161
2.2K
IC20
UDN2916LB
24
23
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
22
11
12
VBB
OUT2B
E2
OUT2A
GND
GND
OUT1A
E1
SENSE1
OUT1B
I01
IO02
I12
PHASE2
VREF2
RC2
GND
GND
VCC
RC1
VREF1
SENSE2
PHASE1
I1
1
R5
10
K
C89
470p
R185
56
K
R35
1K
C75
0.1uF
IC17A
74HC14
1
2
14
7
C81
0.1UF
R192
2.7K F(1%)
R177
3.3K
D27
1
2
R162
2.2K
R181
2
70
D21
1
2
D26
RB160L
-6
0
RB160L
-6
0
RB160L
-6
0
RB160L
-6
0
RB160L
-6
0
RB160L
-6
0
1
2
R160
3.3K
C88
470p
R2
10
K
TP6
TEST
P
O
INT
C79
4700P
F
IC16
UDN2916LB
24
23
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
22
11
12
VBB
OUT2B
E2
OUT2A
GND
GND
OUT1A
E1
SENSE1
OUT1B
I01
IO02
I12
PHASE2
VREF2
RC2
GND
GND
VCC
RC1
VREF1
SENSE2
PHASE1
I1
1
R3
10
K
R39
1K
C72
0.1uF
R36
1K
C93
0.1UF
XE-A303 (V)
CIRCUIT DIAGRAM AND PWB LAYOUT
– 23 –
PRINTER DRIVING
6/7
C
D
B
A
C
D
B
A
876
5
4
321
8
76
5
4
321
"0" R / "1" J
STR
B
1
3
#
LA
T0
#
VHJ
STP
A
1
VHR
STR
B
1
2
#
PCLK0
VHR
STR
B
0
2
#
VHJ
PHUS1
STP#A1
PSVCC
STP
A
0
SESR1
PHUS0
STP#A0
SESD1
STP#B1
SESR0
STPB1
STP#B0
HTM
1
SESD0
PCLK1
DI0
HTM
0
VCC
STPB0
STR
B
1
1
#
STR
B
0
3
#
DI1
STR
B
0
1
#
LA
T1
#
PCLK0
STPB0
PHUS1
STR
B
0
1
#
PD
A
T
0
STR
B
1
1
#
STP#A1
STR
B
0
2
#
SESR1
PD
A
T
1
LA
T
0
#
STP#B1
SESD1
LA
T
1
#
HTM
1
STR
B
1
3
#
PHUS0
STPB1
STP#B0
STR
B
0
3
#
SESR0
PCLK1
STP
A
0
STP
A
1
SESD0
HTM
0
STP#A0
STR
B
1
2
#
VCC
7
PSVCC
7
PSVCC
VCC
VHR
VHJ
CN6
PRINT
CN(40Pin)6229 640 003 800+
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
C94
0.1uF
C95
0.1uF
XE-A303 (V)
CIRCUIT DIAGRAM AND PWB LAYOUT
– 24 –
PO
WER SUPPL
Y
7/7
C
D
B
A
C
D
B
A
876
5
4
321
8
76
5
4
321
POWER UNI
T
CORE
[+24V
]
NOT
INSTA
L
L
P-OFF
VCC +5V
IPEAK>2.2
A
VLED +5.8
V
IC31:HEAT SI
N
K
6,8pin:N.
C
L:ON
NOT INSTAL
L
with FUSE
H:OFF
3
KTD998
BE
C
1
2
POFF#
POFF#
VLED
VCC
VDD
VON#
2
VLED
24
V
VCC
24
V
24
V
VLED
VCC
VDD
G9
GND P
A
D
1
+
C99
3300uF/50V
1
2
IC22
LM2574HVN-A
D
J
1
5
7
3
4
2
H4
SCREW
1
G13
GND P
A
D
1
D34
RB060L4
0
1
2
R207
6.2KF
F6
T2.5AL/250
V
G
L
A
S
S
WITH HOLDER
R197
1.2KF
D32
1SR159-20
0
1
2
R202
3.9K
G1
1
GND P
A
D
1
H1
SCREW
1
D29
1SR159-2
0
0
1
2
C97
MYLOR
0.033uF
G5
GND P
A
D
1
R210
1KF
CN1
1
TJC3-2A(
B
L
U
E
)
1
2
R196
18
K
L5
180uH
H9
SCREW
1
G1
0
GND P
A
D
1
+
C109
47uF
/16V
1
2
H12
SCREW
1
ZD1
PT
Z
3
0
B
1
2
G6
GND P
A
D
1
SM
T1
MA
R
K
1
+
C98
6800uF/50V
1
2
R208
3KF
+
C103
1uF/50V
1
2
+
C106
220uF/50V
1
2
R204
2.7K
TP8
VBA
T
1
G1
2
GND P
A
D
1
F7
T2.0A/250V
G
L
A
S
S
+
C100
100uF/50V
1
2
G3
GND P
A
D
1
H5
SCREW
1
R199
18
K
R194
10(FUSE R)
R209
180
SM
T2
MA
R
K
1
ZD4
UDZS5.1B
1
2
G7
GND P
A
D
1
H10
SCREW
1
G4
GND P
A
D
1
IC24
PQ1CG2032F
Z
1
4
2
5
3
CN10
VH-
2
A
1
2
R21
1
150
H6
SCREW
1
D31
RB060L4
0
1
2
R206
56
K
ZD2
UDZS5.1B
1
2
H1
1
SCREW
1
F8
T1.0A/250
V
G
L
A
S
S
-+
BD1
KPBC
1
0
2
4
1
2
3
H2
SCREW
1
R41
0
+
-
IC23A
BA103
9
3
3
2
1
8
4
+
C108
330uF
/16V
1
2
C107
0.01uF
G1
GND P
A
D
1
C1
10
0.1uF
H7
SCREW
1
Q9
KTD
9
9
8
1
3
2
G8
GND P
A
D
1
R49
33
C101
0.1uF
R203
9.1KF
L6
180uH
H3
SCREW
1
D30
RB160L-6
0
1
2
H8
SCREW
1
+
C105
1000uF
/16V
1
2
D33
1SR159-2
0
0
1
2
+
-
IC23B
BA103
9
3
5
6
7
8
4
R205
10KF
R195
22KF
R198
(5.6K)
G2
GND P
A
D
1
C104
1000pF
+
C102
220uF/50V
1
2
ZD3
PTZ6
.2
B
1
2
XE-A303 (V)
CIRCUIT DIAGRAM AND PWB LAYOUT
– 25 –
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
1/1
KEY IF
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