XE-A302U
DIAGNOSTIC PROGRAM
– 13 –
8) DRAWER 1 OPEN & SENSOR TEST
1
Key operation
110
3
2
Test procedure
3
Check:
A) The drawer 1 opens normally.
B) The sensor correctly indicates the status of the drawer 1.
*
On the XE-A302U, “C” (CLOSED) is always displayed, because
the sensor is not equipped.
4
End of testing
You can exit the test mode by pressing any key. The printer prints
the following.
1 1 0
9) EXTERNAL RAM TEST
1
Key operation
120
3
2
Test procedure
The standard 512 Kbyte RAM is checked.
The contents of memory must be stored before and after this test.
RAM (Bank0: 08000H~7FFFFH area, Bank2: 28000H~2FFFFH area)
is tested in the following procedure:
a) Store data in the test areas
b) Write “00H”
c) Read and compare “00H” and then write”55H”
d) Read and compare “55H” and then write “AAH”
e) Read and compare “AAH”
f) Restore stored data
If an error occurs at a step, the error is printed.
If any error does not occur, the following addresses are checked in
turns.
Addresses to be checked:
08000H, 08001H, 08002H, 08004H, 08008H,
08010H, 08020H, 08040H, 08080H,
08100H, 08200H, 08400H, 08800H,
09000H, 0A000H, 0C000H, 10000H,
18000H, 20000H,
28000H (Bank0), 28000H (Bank2),
30000H, 40000H
3
Check:
A) The completion print.
4
End of testing
The program ends after printing as follows:
When an error occurs, the printer outputs the error message and the
address where the error has occurred in the area
*****
.
10) CPU INTERNAL RAM TEST
1
Key operation
121
3
2
Test procedure
The test program tests internal RAM (10 Kbytes) of the CPU.
The contents of memory must be stored before and after this test.
RAM (00400H ~ 02BFFH area) is tested in the following procedure.
a) Store data in the test area.
b) Write “00H”
c) Read and compare “00H” and then write “55H”
d) Read and compare “55H” and then write “AAH”
e) Read and compare “AAH”
f) Restore stored data
If an error occurs at a step, the error is printed.
If any error does not occur, the following addresses are checked
in turns.
Addresses to be checked:
01000H, 01001H, 01002H, 01004H, 01008H,
01010H, 01020H, 01040H, 01080H,
01100H, 01200H, 01400H, 01800H,
02000H
3
Check:
The completion print.
4
End of testing
If an error occurs, the printer outputs the error message and the
address where the error has occurred in the area
*****
.
When the test ends normally:
1 2 0
When the test end abnormally: Ex – ~ –
*****
1 2 0
x = 1: Data error, x = 2: Address error
RCPT/PO
D R A W E R
P G M
X
OP display
X : O = DRAWER OPENED
C = DRAWER CLOSED
1
RCPT/PO
R A M
P G M
OP display
1 2 0
The test program ends after printing.
When the test ends normally:
1 2 1
When the test ends abnormally:
Ex – ~ –
1 2 1
*****
x = 1: Data error
x = 2: Address error
RCPT/PO
R A M
C P U
P G M
OP display
1 2 1
