Read Sharp UP-X500 (serv.man4) Service Manual online
UP-X500U
DIagnostics Specifications
4 – 2
4-1-4. Test Contents
(1) Write/read-verify Test
[Test condition setting]
According to the capacity of installed memory, Write/Read-Verify test is
performed in the following range.
performed in the following range.
[Test content]
Test data are written into 64KB area for every 1MB, and the same area
is read to make comparison test.
Test data are in the four patterns: 0000h, 5555h, AAAAh, FFFFh.
(2) Error Table
The content of an error generated (logging) during execution of test.
4-1-6. Test Display
(DRAM test execution test)
On the above menu, use [
2
] and [
4
] keys to select a test item. Press
[ENTER] key to execute the test. When [ESC] key is pressed, the dis-
play returns to the initial menu.
(DRAM sequential write/read-verify test execution display)
(DRAM sequential write/read-verify test execution display)
The installed memory capacity is displayed in
.
In the column of “Data: ” the test data are displayed.
When an error occurs, the error occurring address, write test data, and
read data are displayed. (They are logged in memory simultaneously.)
4-1-7. Error Contents
When there is any hardware abnormality related to the DRAM, the fol-
lowing error message is displayed.
4-2. Floppy Disk
4-2-1. Outline
This test is used to check the operations of the FD I/D section.
By this test, the FDD drive and the FD controller can be checked. In
each test, selection of aging/error/stop/1 pass can be made and the test
each test, selection of aging/error/stop/1 pass can be made and the test
time is displayed.
4-2-2. Use Treatment Device
4-2-3. Test Item
The purposes of this test are as follows:
[Read mode test]
[Write mode test]
4-2-4. Test Contents
[READ MODE TEST]
(1) Sequential Read Only Test
[Test conditions setting]
• Test area setting
Cylinder: The test area is set in the range of 00 s a 79 cylinder areas.
Sector:
The number of sectors to be checked is set in the range of
00
0
18 (9).
• Retry number setting (0~4)
The retry number in case of an error occurs is set.
• Error stop/continue/1 pass
In case of an error, selection is made whether interrupt is made or not.
Also used to select whether the test is executed or not by 1 pass.
[Test contents]
The sequential read test for every one track is executed in the range set
as above.
as above.
Completion of the read test in the set range is counted as 1 pass.
The operation of this test is as shown below:
Installed memory size
Test range
128MB (Slandard)
100000H~7FFFFFFH
640MB (DIMM 512MB)
100000H~FFFFFFFH
DRAM Test
CURSOR:Move
ENTER:Select
ESC:Exit
DRAM Sequential write/read-verify Test
Error Table
DRAM Test
Test Executing
Data: xxxxh
Rate: xx %
Pass count = 0000
ENTER:Stop
Restart
ESC:Exit
Slot-0
Slot-1
Total
0xxxMB
0xxMB
0xxMB
or
DRAM Memory write/read data hasn’t coincided
ADDRESS XXXXXXXXX WRITE DATA XXXXh READ DATA XXXXh
ADDRESS XXXXXXXXX WRITE DATA XXXXh READ DATA XXXXh
UP-X500 series main unit diag execution media x 1
FD media for work
x 1
• Sequential read only test
• Target sector read test
• Sequential write/read & compare test
• Target sector write/read & compare test
• Error table display
Re-calibration
Seek to track
where to be tested
where to be tested
Lead test
These procedures are repeated.
becoming
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