Read Sharp ER-A410 / ER-A420 (serv.man3) Service Manual online
ER-A410/ER-A420
DIAGNOSTIC PROGRAM
– 19 –
16) RA232 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
17) EFT SELF TEST
Turn off the power, and set all DIP switches of the ER-03EF to OFF.
Connect the loop back connector to the RS232 CH2 port.
Set the mode SW to the SRV position, and turn ON the power.
1
Key operation
510
3
After the above key operation, the EFT self test is automatically
executed.
executed.
2
Test procedure
a) The loop back test of ER-DR, ER-C1, and RS-CS are per-
formed
for the EFT connector.
b) In DIP SW1 check, each of SW1 ~ 8 is turned on one by one.
c) If normal, the sum check of the EFT ROM is performed and the
write/read check of the RAM is performed.
3
JOURNAL print (Normal end)
JOURNAL print (Abnormal end)
3. KEY CODE TABLE
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
TL
R S
T E S T
S R V
OP display
5 0 1
2 3 2
TL
R S
T E S T
S R V
OP display
5 0 1
2 3 2
DIAG0(SELF TEST) :OK
VHI27040RBF1*
:OK
256K SRAM
:OK
ER03EF TEST
ER03EF ROM
ER03EF DIPSW
ER03EF RAM
ER-DR LOOP ERROR
ER-CI LOOP ERROR
VHI27040R**** :ERROR
DIP SW ERROR
RS-CD LOOP ERROR
256K SRAM
:ERROR
ER03EF TEST
ER03EF ROM
ER03EF DIPSW
ER03EF RAM
RS-CS LOOP ERROR
RDRF ERROR
SD-RD STATUS ERROR
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
006
118
RF JF
4 2 6 7
A410V
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
8 9 4 0
A420V
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