Service manual

ER-A410U/ER-A420U DIAGNOSTIC PROGRAM
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14) AD CONVERSION PORT TEST
1
Key operation
160 3
2
Test procedure
The test program displays the voltage of each AD conversion port.
3
End of testing
You can exit the test mode by pressing any key. The printer prints
the following.
160
15) RS232 CH1 TEST
Install the RS232 loopback connector.
1
Key operation
500 3
2
Test procedure
The test program checks the control signals.
Data communication check
A loopback test of 256-byte data between is performed.
DATA: $00 - $FF BAUD RATE:9600 BPS
3
Check:
The completion print.
4
End of testing
16) RS232 CH2 TEST
Install the RS232 loopback connector.
1 Key operation
501 3
2 Test procedure
The test program checks the control signals.
Data communication check
A loopback test of 256-byte data between is performed.
DATA: $00 - $FF BAUD RATE: 9600 BPS
3
Check:
The completion print.
4
End of testing
3. KEY CODE TABLE
OUTPUT INPUT
/ER1 /RS1 /DR1 /CI1 /CD1 /CS1
OFF OFF OFF OFF OFF OFF
OFF ON OFF OFF ON ON
ON OFF ON ON OFF OFF
ON ON ON ON ON ON
Completion print RS TEST OK
Error print RS TEST **NG**ERxx
xx Contents of error
01 ER DR error
02 ER CI error
03 RS CD error
04 RS CD error
05 SD RD error DATA error
06 SD RD error DATA error/framing error
CA/AT
TM
SRV
OP display
Display
160
=
VRF
SRV
OP display
160
=
VPTEST
SRV
OP display
160
=
Repeat
CA/AT
RS TEST
SRV
OP display
500
232
OUTPUT INPUT
/ER2 /RS2 /DR2 /CI2 /CD2 /CS2
OFF OFF OFF OFF OFF OFF
OFF ON OFF OFF ON ON
ON OFF ON ON OFF OFF
ON ON ON ON ON ON
Completion print RS TEST OK
Error print RS TEST **NG**ERxx
xx Contents of error
01 ER DR error
02 ER CI error
03 RS CD error
04 RS CD error
05 SD RD error DATA error
06 SD RD error DATA error/framing error
CA/AT
RS TEST
SRV
OP display
501
232
033
032
038
039
CHECK SUM :
ER
037
048
054
055
052
050
053
128
132
130
133
129
116
051 131 115
114
117
113
112
084
082
085
081
102
067
068
066
069
080
103
147
146
149
065
086
087
148
018
145
064
070
071
003
002
017
016
007
004
005
001
000
022 006
118
RF
JF
4289
A410U
CHECK SUM :
ER
064
080
144
016
119
128 112
087
071
151
RF JF
135
096
032
082
146
034
130
103
048
066
050
017
129
113
055
081
145
001
131
097
039
083
147
019
116
115
033
068
148
052
132
051
049
086
054
036
118
084
065
150
038
022
134
100
035
070
053
021
085
102
067
069
149
037
104
101
099
072
152
040
136
117
133
088
056
025
073
089
120
153
057
041
122
105
121
154
058
042
090
106
138
074
075
059
123
107
155
139
091
027
000 007 023 018 002 003 020 004 006 005 024 008 009 010 026 043 011
8940
A420U