Sharp XE-A301 Service Manual page 14

11) FLASH ROM TEST
1 Key operation
130 3
RCPT/PO
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)
OP display
F L A S H
1 3 0
3 Check:
The completion print.
4 End of testing
The test will automatically be terminated and the printer prints as fol-
lows:
When the test ends normally:
When the test ends
abnormally:
12) AD CONVERSION PORT TEST
1 Key operation
160 3
RCPT/PO
2 Test procedure
The test program displays the voltage of each AD conversion port.
Display
OP display
T M
1 6 0
OP display
V R F
1 6 0
OP display
V P T E S T
1 6 0
End of testing
13) RS232C TEST
Install the RS232C loopback connector.
1 Key operation
500 3
RCPT/PO
2 Test procedure
The test program checks the control signals.
OUTPUT
/ER /RS
OFF OFF
OFF ON
ON OFF
ON ON
P G M
R O M
********
ROM (Model name)
********
(Version)
E – – ~ – –
********
ROM (Model name)
********
(Version)
=
P G M
=
P G M
=
P G M
INPUT
/DR /CI /CD
OFF OFF OFF
OFF OFF ON
ON ON OFF
ON ON ON
Data communication check
A loopback test of 256-byte data between is performed.
DATA: $00 - $FF BAUD RATE :9600 BPS
OP display
3 Check:
The completion print.
4 End of testing
Completion print
Error print
xx
01
02
03
04
130
05
06
130
3. KEY CODE TABLE
XE-A301
RF JF
033 037
032 048
038 054
039 055
CHECK SUM : 4053
/CS
OFF
ON
OFF
ON
XE-A301V DIAGNOSTIC PROGRAM
– 13 –
2 3 2 C
R S T E S T
5 0 0
RS TEST
RS TEST
Contents of error
ER DR error
ER CI error
RS CD error
RS CD error
SD RD error DATA error
SD RD error DATA error/framing error
083 067 147 148
052 132 116 084 068
050 130 114 082 066
053 133 117 085 069
128 129 113 081 080
118 112 102 103
P G M
OK
**NG**ERxx
003 004
146 018 002 005
149 145 017 001
065 064 016 000
086 070 006
087 071 007