Y108540-8
ECR 7900 Service Manual
95
1
2
3
4
5
6
7
8
A
B
C
D
8
7
6
5
4
3
2
1
D
C
B
A
KRETURN1
KRETURN2
KRETURN3
KRETURN4
KRETURN5
KRETURN6
KRETURN7
KRETURN0
1
2
3
4
5
6
7
8
9
CN5
B7B-PH- K-S
1
2
3
4
5
6
7
8
9
10
CN6
B9B-PH- K-S
Key Board
C7
7
3
3
0
p
F
C7
9
3
3
0
p
F
C8
1
3
3
0
p
F
C7
6
3
3
0
p
F
C
7
5
*33
0p
F
C7
8
3
3
0
p
F
C8
0
3
3
0
p
F
C8
2
3
3
0
p
F
R
1
42
10
k
R
1
43
10
k
R
1
44
10
k
R
1
45
10
k
R
1
48
10
k
R
1
41
10
k
R
1
46
10
k
R
1
47
10
k
VCC
A
K
D5
7
*1
S
S
3
5
5
A
K
D5
9
*1
S
S
3
5
5
A
K
D6
0
*1
S
S
3
5
5
A
K
D5
8
*1
S
S
3
5
5
A
K
D5
3
*1
S
S
3
5
5
A
K
D5
5
*1
S
S
3
5
5
A
K
D5
6
*1
S
S
3
5
5
A
K
D5
4
*1
S
S
3
5
5
A
K
D6
5
*1
S
S
3
5
5
A
K
D6
7
*1
S
S
3
5
5
A
K
D6
8
*1
S
S
3
5
5
A
K
D6
6
*1
S
S
3
5
5
A
K
D6
1
*1
S
S
3
5
5
A
K
D6
3
*1
S
S
3
5
5
A
K
D6
4
*1
S
S
3
5
5
A
K
D6
2
*1
S
S
3
5
5
VCC
*
*
C6
9
3
3
0
p
F
C7
1
3
3
0
p
F
C7
3
3
3
0
p
F
C6
8
3
3
0
p
F
C6
7
3
3
0
p
F
C7
0
3
3
0
p
F
C7
2
3
3
0
p
F
C7
4
3
3
0
p
F
R1
2
5
1
0
k
R1
2
6
1
0
k
R1
2
7
1
0
k
R1
2
8
1
0
k
R1
3
1
1
0
k
R1
2
4
1
0
k
R1
2
9
1
0
k
R1
3
0
1
0
k
VCC
A
K
D4
0
*1
S
S
3
5
5
A
K
D4
2
*1
S
S
3
5
5
A
K
D4
3
*1
S
S
3
5
5
A
K
D4
1
*1
S
S
3
5
5
A
K
D3
6
*1
S
S
3
5
5
A
K
D3
8
*1
S
S
3
5
5
A
K
D3
9
*1
S
S
3
5
5
A
K
D3
7
*1
S
S
3
5
5
A
K
D4
9
*1
S
S
3
5
5
A
K
D5
1
*1
S
S
3
5
5
A
K
D5
2
*1
S
S
3
5
5
A
K
D5
0
*1
S
S
3
5
5
A
K
D4
5
*1
S
S
3
5
5
A
K
D4
7
*1
S
S
3
5
5
A
K
D4
8
*1
S
S
3
5
5
A
K
D4
6
*1
S
S
3
5
5
VCC
*
*
C6
6
3
3
0
p
F
R1
2
3
1
0
k
A
K
D3
5
*1
S
S
3
5
5
A
K
D4
4
*1
S
S
3
5
5
R149
0
R150
0
R151
0
R152
0
R153
0
R154
0
R155
0
R140
0
R132
0
R133
0
R134
0
R135
0
R136
0
R137
0
R138
0
R139
0
KS0
KS1
KS2
KS3
KS4
KS5
KS6
KS7
KR[0..7]
KR[0..7]
KR0
KR1
KR2
KR3
KR4
KR5
KR6
KR7
KSCAN1
KSCAN2
KSCAN3
KSCAN4
KSCAN5
KSCAN6
KSCAN7
KSCAN0
KSCAN8
KS[0..8]
KS[0..8]
B
E
C
Q2
DTC143EKA
R158
200
C83
0.1uF_25V
G
D
S
Q1
2SJ377
R157
1k
C84
0.1uF_25V
C8
6
3
3
0
p
F
T1IN
11
T2IN
10
R1OUT
12
R2OUT
9
C1+
1
C1-
3
C2+
4
C2-
5
T1OUT
14
T2OUT
7
R1IN
13
R2IN
8
VCC
16
V+
2
V-
6
GND
15
U7
MAX3232CPW R
C8
7
3
3
0
p
F
C8
8
3
3
0
p
F
R159
100
R161
100
C8
5
3
3
0
p
F
VCC
VCC
BCR_ON
RxD1
CTS1#
RTS1#
TxD1
CTS1#
RxD1
RTS1#
TxD1
BCR_ON
RS232C #1
C9
1
0
.1
u
F
_
2
5
V
C8
9
0
.1
u
F
_
2
5
V
C9
2
0
.1
u
F
_
2
5
V
C9
0
0
.1
u
F
_
2
5
V
R160
100
R162
100
1
2
3
4
5
6
CN7
B6P-SHF-1AA
FB6
SBY321611T-320Y-S
FB5
SBY321611T-320Y-S
TP3
GND
BCR/PC Interface
(RS-232C)
R165
*1M_1/4W
FG
KS8
R156
*0
GN1
GND-SCREW _HOLE
R1
6
4
1
0
k
R1
6
3
1
0
k
* mark is unmounted parts.
Summary of Contents for ECR 7900
Page 1: ...Cash Register ECR 7900 SERVICE MANUAL Code Y108540 8...
Page 6: ......
Page 20: ...14 ECR 7900 Service Manual Y108540 8...
Page 43: ...Y108540 8 ECR 7900 Service Manual 37...
Page 48: ...42 ECR 7900 Service Manual Y108540 8...
Page 55: ...Y108540 8 ECR 7900 Service Manual 49...
Page 56: ...50 ECR 7900 Service Manual Y108540 8...
Page 57: ...Y108540 8 ECR 7900 Service Manual 51...
Page 59: ...Y108540 8 ECR 7900 Service Manual 53...
Page 60: ...54 ECR 7900 Service Manual Y108540 8...
Page 61: ...Y108540 8 ECR 7900 Service Manual 55...
Page 70: ...64 ECR 7900 Service Manual Y108540 8 17 It shows Up Load OK 18 Click Ver button...
Page 76: ...70 ECR 7900 Service Manual Y108540 8 12 Click the HardWare tab 13 Click the Device Manager...
Page 107: ...Y108540 8 ECR 7900 Service Manual 101 9 EXPLODED DIAGRAM...