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2) Functional description
State of the drawer open sensor is sensed and displayed.
3) Check items
X
Description
O
Drawer open sensor detected. (Drawer opend)
C
Drawer open sensor not detected. (Drawer closed)
The ER-A220 is not provided with the open sensor and thus the
letter "C" stays on the display.
letter "C" stays on the display.
a) Check opening of the specified drawer.
4) Test termination
Press any key. The test terminates with the test and message printed
[8] External RAM test
1) Key operation
2) Functional description
Perform the following check for the external RAM 128 KByte SRAM.
Perform the following processes for memory address to be checked
(080000H~27FFFH).
PASS1 : Save memory data.
PASS2 : Write data "00H."
PASS3 : Read and compare data "00H," write data "55H."
PASS4 : Read and compare data "55H," write data "AAH."
PASS5 : Read and compare data "AAH."
PASS6 : Restore the memory data.
If a compare error occurs in the check sequence PASS1-PASS6, an
error print is made. If no error occurs through all address, the check
error print is made. If no error occurs through all address, the check
ends normally.
The following address check is performed further.
Check point address =
10000H , 10001H , 10002H , 10004H , 10008H
10010H , 10020H , 10040H , 10080H ,
10100H , 10200H , 10400H , 10800H ,
10100H , 10200H , 10400H , 10800H ,
11000H , 12000H , 14000H , 18000H ,
20000H
3) Check the following items:
Check the termination printout.
4) Test termination
The test terminates after printing the termination printout.
Termination printout:
Normal termination
120
Abnormal termination
Ex – – – – –
120
X = 1: Data check error
2: Address check error
Note: When an error occurs, the error print is performed and the
check is terminated. The error occurrence address is shown in
hexadecimal at positions shown with
hexadecimal at positions shown with
.
[9] CPU internal RAM test
1) Key operation
2) Functional description
Perform the following check for the CPU internal RAM 20 KByte.
Perform the following processes for memory address to be checked
(00400H~053FFH).
PASS1 : Save memory data.
PASS2 : Write data "00H."
PASS3 : Read and compare data "00H," write data "55H."
PASS4 : Read and compare data "55H," write data "AAH."
PASS5 : Read and compare data "AAH."
PASS6 : Restore the memory data.
If a compare error occurs in the check sequence PASS1-PASS6, an
error print is made. If no error occurs through all address, the check
error print is made. If no error occurs through all address, the check
ends normally. The following address check is performed further.
Check point address =
01000H , 01001H , 01002H , 01004H , 01008H
01010H , 01020H , 01040H , 01080H ,
01100H , 01200H , 01400H , 01800H ,
01100H , 01200H , 01400H , 01800H ,
02000H , 04000HE
3) Check the following items :
Check the termination printout.
4) Test termination
The test terminates after printing the termination printout.
Termination printout:
Normal termination
121
Abnormal termination
Ex – – – –
121
X = 1: Data check error
2: Address check error
Note : When an error occurs, the error print is performed and the
check is terminated. The error occurrence address is shown in
hexadecimal at positions shown with
hexadecimal at positions shown with
.
[10] External ROM (IPL) test
1) Key operation
1 1 0
X
1 1 0
120
#/TM/ST
121
#/TM/ST
130
#/TM/ST
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