Sharp UP-5300, Service Manual

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ii. The test area data is saved to the main memory.
iii. Test data 5555H is written to all the test areas.
iv. Test data and read data are compared by each word, If it is
O.K., test data AAAAH is written to the test area.
v. Test data and read data are compared by each word, If it is
O.K., test data 5555H is written to the test area.
vi. Test data 0000H is written to all the test areas.
vii. Test data and read data are compared by each word, If it is
O.K., test data FFFFH is written to the test area.
viii. Test data and read data are compared by each word, If it is
O.K., test data 0000H are written to the test area.
ix. The saved data is written to the test areas.
When an error occurs during the test, the error address and data
are displayed and the test is stopped.
2
Display
The error address and the error data are displayed only when an
error occurs. (If no errors occur, they are not displayed.)
3
Terminating method
After the test result is displayed, press the Esc key to terminate
the test and return to the RAM diagnostics menu.
3) OPTION RAM Disk Check
1
Checking content
For the standard RAM disk area (BANK 040H
∼
BANK 0BFH),
each test area of bank size 16KB is checked. The bank base
address of RAM is set to 0D4000H and after. The check proce-
dures are as follows:
i. Write different data to each address by a word method similar
to the Standard RAM Disk Check. After completion of writing,
a BANK 0BFH 0D4000H data read verify check is made.
(Data in the written area is saved in the main memory.) If it is
OK, the following test is executed. In case of an error, the
error display is made and the test is terminated.
ii. Test data 55AAH is written to BANK 040H 0D4000H.
iii. BANK 040H 0D4000H is read and compared with 55AAH. If
both data are correct, the following test is executed. If not,
"Extended RAM Disk size: 0KB" is displayed and the test is
terminated.
iv. The test area data is saved to the main memory.
v. Test data 5555H is written to the test area.
vi. Test data and read data are compared. If is OK, test data
AAAAH is written to the test area.
vii. Test data and read data are compared by each word, If it is
O.K., test data 5555H is written to the test area.
viii. Test data and read data are compared by each word, If it is
O.K., test data 0000H is written to all the test areas.
ix. Test data and read data are compared by each word. If it is
OK, test data FFFFH is written to the test area.
x. Test data and read data are compared by each word. If it is
OK, test data 0000H is written to the test area.
xi. The saved data is written to the test areas.
When an error occurs during the test, the error address and data
are displayed and the test is stopped.
2
Display
The error address and the error data are displayed only when an
error occurs. (If no error occurs, they are not displayed.)
3
Terminating method
After the test result is displayed, press the Esc key to terminate
the test and return to the RAM diagnostics menu.
3-4. ROM Diagnostics
The DOS ROM, BIOS ROM, standard flash ROM, and option flash
ROM are tested.
The following menu is displayed. The highlighted cursor is moved by
the cursor keys (UP
↑
and DOWN
↓
) of the AT keyboard. Move the
cursor to the desired item, and press the Enter key to execute the
selected diagnostics program. When the selected diagnostics pro-
gram is completed, Press the ESC key to return to the ROM diagnos-
tics menu. Pressing Esc key again returns to the service diagnostics
menu.
1) DOS ROM Check
1
Checking content
A sum check is made for the DOS ROM (BANK 000H
∼
0FFH). All
data bytes are added. If the check sum is 10H, it is normal.
The ROM version is displayed.
2
Display
3
Terminating method
After the test result is displayed, press the Esc key to terminate
and return to the ROM diagnostics menu.
2) BIOS ROM Check
1
Checking content
The BIOS ROM version is displayed.
2
Display
Standard RAM Disk Check
Standard RAM Disk size : 1024KB PASS !!(or ERROR !!)
Error Address xxxxxxH Write Data xxxxH Read Data xxxxH
Option RAM disk Check
Extended RAM Disk size : 1024KB PASS !!(or ERROR !!)
Error Address xxxxxxH Write Data xxxxH Read Data xxxxH
ROM Diagnostics
DOS ROM Check
BIOS ROM Check
Standard FLASH ROM Check
Option FLASH ROM Check
DOS ROM Check
Sum Check : PASS !!(or ERROR !!)
ROM Version : VHILH****
The version is displayed.
BIOS ROM Check
Version - ROM : SHPUP****
The version is displayed.
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