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iv. Test data 5555H is written to the whole test areas.
v.
Test data and read data are compared with every word as a
unit. If it is O.K., test data AAAAH is written to the test area.
unit. If it is O.K., test data AAAAH is written to the test area.
vi. Test data and read data are compared with every word as a
unit. If it is O.K., test data 5555H is written to the test area.
vii. Test data 0000H is written to the whole test areas.
viii. Test data and read data are compared with every word as a
unit. If it is O.K., test data FFFFH is written to the test area.
ix. Test data and read data are compared with every word as a
unit. If it is O.K., test data 0000H is written to the test area.
x.
Write the saved test data into the test area.
When an error occurs during the test, the error address and data
are displayed and the test is terminated.
When a POFF interruption is made during the test, the test opera-
tion should be terminated and the saved data should be written
into the test area within 50ms.
are displayed and the test is terminated.
When a POFF interruption is made during the test, the test opera-
tion should be terminated and the saved data should be written
into the test area within 50ms.
2
Display
ER-03MB Check
Extended RAM Disk size : 1024KB
PASS !! (or ERROR !!)
Error Address xxxxxxH Write Data xxxxH Read Data xxxxH
Error address and bit are displayed only when an error occurs. (If
no error occurs, they are not displayed.)
no error occurs, they are not displayed.)
3
Exiting
After displaying the check result, pressing the Esc key will exit
from this check mode.
After displaying the check result, pressing the Esc key will exit
from this check mode.
4) ER-04MB Check
1
Check contents
The extended RAM disk area (700000H
The extended RAM disk area (700000H
∼
8FFFFFH) is checked
with every 64KB test area as a unit. The test procedures are as
follows:
follows:
i.
55AAH is written into 8FFFFFH.
ii.
7FFFFFH is read and compared with 55AAH. If the both data
are correct, the following test is performed. If not, the display
shows "Extended RAM Disk size : 0KB" and the test is termi-
nated.
are correct, the following test is performed. If not, the display
shows "Extended RAM Disk size : 0KB" and the test is termi-
nated.
iii.
The test area data is saved into the main memory.
iv. Test data 5555H is written to the whole test areas.
v.
Test data and read data are compared with every word as a
unit. If it is O.K., test data AAAAH is written to the test area.
unit. If it is O.K., test data AAAAH is written to the test area.
vi. Test data and read data are compared with every word as a
unit. If it is O.K., test data 5555H is written to the test area.
vii. Test data 0000H is written to the whole test areas.
viii. Test data and read data are compared with every word as a
unit. If it is O.K., test data FFFFH is written to the test area.
ix. Test data and read data are compared with every word as a
unit. If it is O.K., test data 0000H is written to the test area.
x.
The saved test data is written into the test area.
When an error occurs during the test, the error address and data
are displayed and the test is terminated.
When a POFF interruption is made during the test, the test opera-
tion is terminated and the saved data is written into the test area
within 50ms.
are displayed and the test is terminated.
When a POFF interruption is made during the test, the test opera-
tion is terminated and the saved data is written into the test area
within 50ms.
2
Display
ER-04MB Check
Extended RAM Disk size : 2048KB
PASS !! (or ERROR !!)
Error Address xxxxxxH Write Data xxxxH Read Data xxxxH
Error address and bit are displayed only when an error occurs. (If
no error occurs, they are not displayed.)
no error occurs, they are not displayed.)
3
Exiting
After displaying the check result, pressing the Esc key will exit
from this check mode.
After displaying the check result, pressing the Esc key will exit
from this check mode.
3-4. ROM Diagnostics
This diagnostics is used to check the system ROM.
The display shows the following menu. The highlighted cursor is
moved with the cursor up key (
The display shows the following menu. The highlighted cursor is
moved with the cursor up key (
↑
) and the cursor down key (
↓
) of the
AT key. Move the cursor to the diagnostics item to be executed, then
press the Enter key, and the selected individual diagnostics program
will be executed. After completion of an individual diagnostics pro-
gram, the display returns to the menu screen. To exit from the diag-
nostics mode, press the Esc key, and the display will return to the
service-man diagnostics menu screen.
press the Enter key, and the selected individual diagnostics program
will be executed. After completion of an individual diagnostics pro-
gram, the display returns to the menu screen. To exit from the diag-
nostics mode, press the Esc key, and the display will return to the
service-man diagnostics menu screen.
ROM Diagnostics
System ROM Check
BIOS ROM Check
1) System ROM Check
1
Check contents
Address E00FC3H is read and checked: if the data is 32H, the
system ROM capacity is 2MB; if the data is 34H, it is 4M. For the
other cases, an error display is given.
In the case of a 2MB ROM, the system ROM area (E00000H
Address E00FC3H is read and checked: if the data is 32H, the
system ROM capacity is 2MB; if the data is 34H, it is 4M. For the
other cases, an error display is given.
In the case of a 2MB ROM, the system ROM area (E00000H
∼
E3FFFFH) is added with every byte as a unit. If the lower two
digits of the result of addition is FFH, it is judged as normal.
In the case of a 4MB ROM, the system ROM area (E00000H
digits of the result of addition is FFH, it is judged as normal.
In the case of a 4MB ROM, the system ROM area (E00000H
∼
E7FFFFH) is added with every byte as a unit. If the lower two
digits of the result of addition is FFH, it is judged as normal.
Data of 10 bytes at address E00FC0H
digits of the result of addition is FFH, it is judged as normal.
Data of 10 bytes at address E00FC0H
∼
E00FC9H where the
ROM version is stored is displayed in ASCII code characters.
2
Display
System ROM Check
System ROM Sum Check
: PASS !! (or ERROR !!)
ROM Version
: 27020RXX1A
3
Exiting
After displaying the check result, pressing the Esc key will exit
from this check mode.
After displaying the check result, pressing the Esc key will exit
from this check mode.
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