Olivetti ECR 7900 Service Manual page 102

1 2
D
M_ENA
M_ENA
M_A
M_A
M_B
M_B
VCC
HLATCH#
HLATCH#
STB1#
STB1#
STB2#
STB2#
C
HCLK
HCLK
HDATA
HDATA
R_SHTH
R_SHTH
P_PS
P_PS
B
A
1 2
96 ECR 7900 Service Manual
3 4
VCC VPRN
U8
1 14
VCC GND
2 13
ENA1 ENA2
3 12
OUT1 OUT3
4 11
VS1 VS2
5 10
OUT2 OUT4
6 9
IN1 IN2
7 8
GND VCNT
LB1838M
VCC
C95
0.1uF_25V
PG
R170
N2012ZA102
R171
R172 N2012ZA102
N2012ZA102
R173
R174 N2012ZA102
N2012ZA102
R177
0
VCC
R178
1k
C102
0.1uF_25V
R179
1k
VPRN VPRN
EC18 EC19
+ +
10uF_50V 10uF_50V
PG PG
3 4
Y108540-8
5 6
VPRN
R166
9.1k_F
C93
+ EC11
SHVP
SHVP
47uF_16V
C94 R167
10k_F 0.1uF_25V
*100pF
PG
R96 *0
E C
2SA1036K
Q10
VCC VCC
R200
10k
C112
R176 R201
10k_F 2k
1uF_10V
C101
B
Q11
DTC143EKA
0.01uF
SVCC_ON
SVCC_ON
VPRN
R180
33_1W
C103
0.1uF_50V
R181
4.7k
B
WIND_ON
WIND_ON
R183
10k
* mark is unmounted parts.
5 6
7 8
VCC
EC10
+
47uF_16V
PRINTER(M-T53 II) I/F
CN8 PRINTER
A
27 1
B#
26 2
B
25 3
A#
24 4
23 5
VPRN VH
22 6
VPRN VH
21 7
P_LAT#
20 8
P_TM
19 9
GND_P
18 10
GND_P
17 11
P_STB1#
16 12
VCC
15 13
P_STB2#
14 14
GND_P
13 15
GND_P
12 16
P_CLK
11 17
P_DATA
10 18
VPRN VH
9 19
VPRN VH
8 20
7 21
6 22
SVCC
5 23
SLED
4 24
P_PEND
3 25
(OPEN)
2 26
1 27
R204
R175 HLW27S-2C7 M-T53 II
220
0_1W
PG
WIND MOTOR I/F
CN9
1
2
3
B3B-XH
R182
Q3
2SD1817 *0
PG
7 8
D
C
B
A