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Sharp XE-A402 Service Manual Page 14

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PC-UM10M
XE-A402 DIAGNOSTIC PROGRAM
– 13 –
11) FLASH ROM TEST
1
Key operation
130
3
2
Test procedure
The test program checks that the checksum of the flash ROM
(BANK0F80000H ~ FFFFFH).
The lower two digits of the checksum should be 10H. (pending)
3
Check:
The completion print.
4
End of testing
The test will automatically be terminated and the printer prints as fol-
lows:
12)AD CONVERSION PORT TEST
1
Key operation
160
3
2
Test procedure
The test program displays the voltage of each AD conversion port.
13) RS232C TEST
Install the RS232C 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
3. KEY CODE TABLE
When the test ends normally: 130
ROM
********
(Model name)
********
(Version)
When the test ends
abnormally:
E
– – ~ – –
130
ROM
********
(Model name)
********
(Version)
OUTPUT INPUT
/ER /RS /DR /CI /CD /CS
OFFOFFOFFOFFOFFOFF
OFF ON OFF OFF ON ON
ON OFF ON ON OFF OFF
ON ON ON ON ON ON
RCPT/PO
ROMFLASH
PGM
OP display
130
RCPT/PO
TM
PGM
OP display
Display
160
=
VRF
PGM
OP display
160
=
VPTEST
PGM
OP display
160
=
End of testing
RCPT/PO
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
RS TEST
PGM
OP display
500
232
C
033
032
038
039
CHECK SUM :
XE
037
048
054
055
052
050
053
128
132
130
133
129
116
114
117
113
112
083
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
022
007
004
005
001
000
006
118
RF
JF
4075
A401U
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