Service manual

ER-A410U/ER-A420U CIRCUIT DIAGRAM AND PWB LAYOUT
– 24 –
A B
C D
8 7 6 5 4
3
2 1
12345678
D C
B A
RS232C DRIVER 5/7
EFCB322513TS X 8
EFCB322513TS X 8
GND:8Pin
*IC34 VCC:16Pin
SHORT SOCKET(CI)
1000pF*5
100ohm*5
1000pF*5
100ohm*5
CD1
RD1
SD1
ER1
CI1 DR1
RS1
CS1
CI/+5V
CD2
RD2
SD2
ER2
DR2
RS2
CS2
CI2
P9
1
/S9
/RS1 /ER1 TXD
1
RXD1
/CD1 /DR1
RXD2
/DR2
/CI2
/CD2
/RS2 /ER2 TX
D2
/EFT
C
/EFTRS
/EFTE
R
EF
TSD
/CTS2
/CTS1
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
C122
0.1uF
C123
0.1uF
+
C124
10uF/50V
C112
0.1uF
C125
0.1uF
C12
6 C127 C128
R138 10
K
C12
9 C130
R12
7
R126
10K
R12
8
R12
9
R125
10
K
R13
0
R13
1
R133
(10
K)
R134
10K
FB34
C111
0.1uF
FB35
CN11
RS232C CN(D-SUB 9Pin)87203-606
6
1 2 3 4 5 6 7 8
9
FB36 FB37 FB38 FB39 FB40 FB41 FB26
CN12
RS232C CN(D-SUB 9Pin)87203-606
6
1 2 3 4 5 6 7 8
9
R124
10
K Q11
KRC111
S
IC34
74HC157DR
2 3 5 6
11 10 14 13
1
15
4 7 9 12
1A 1B 2A 2B 3A 3B 4A 4B
A/B G
1Y 2Y 3Y
4Y
C116
C110
0.1uF
C109
0.1uF
IC32
HIN211
12 14 15 16
7 6
20 21
8 5
26 22 19 24
13 17 2 3 1 28 9 4 27 23 18 25
1110
C1+
C1-
C2+
C2-
T1IN T2IN T3IN T4IN R1OUT R2OUT R3OUT R4OUT R5OUT /EN
V+
V-
T1OUT
T2OUT
T3OUT
T4OUT
R1IN
R2IN
R3IN
R4IN
R5IN
/SHDN
VCC10
R142 (47
K)
R135
(10K
)
R141 (47
K)
R139 (47K)
FB29
R140
(47
K)
F6
T500mA/
250V
R12
0
R132 10
K
C11
8
R136
10
K
FB30 FB27 FB31 FB28
C114
0.1uF
R11
9
FB32
+
C113
10uF/50V
SP1
SHORT PIN
R137
(10K
)
R12
1
R12
2
C11
9
D13
1SS
355
FB33
C117C115
IC33
HIN211
12 14 15 16
7 6
20 21
8 5
26 22 19 24
13 17 2 3 1 28 9 4 27 23 18 25
1110
C1+
C1-
C2+
C2-
T1IN T2IN T3IN T4IN R1OUT R2OUT R3OUT R4OUT R5OUT /EN
V+
V-
T1OUT
T2OUT
T3OUT
T4OUT
R1IN
R2IN
R3IN
R4IN
R5IN
/SHDN
VCC10
C120
0.1uF
C121
0.1uF
R12
3