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Hardware Diagnostics
- 02. EXPANSION MEMORY TEST writes constant data to all of the memory areas,
then reads the data and compares it with the test data.
- 03. RAM REFRESH TEST writes test data to the memory, then reads the data after
one refresh cycle and compares the data with the test data.
- 04. STRESS TEST writes data to the protected mode memory (from 1 MB to
maximum), then reads the data and compress it with the write data.
NOTE: The 02. EXPANSION MEMORY TEST, 03. RAM REFRESH TEST and 04.
STRESS TEST all test the memory area. The time required to complete these tests
will increase with the amount of system RAM installed. A fully loaded system may
take a few hours to complete.
❖
02. KEYBOARD TEST contains three subtests to test the computer's keyboard and
mouse actions.
- 01. PRESSED KEY DISPLAY provides a drawing of the keyboard layout. When any
key is pressed, the corresponding key appears on the display. Pressing and holding
a key enables the auto-repeat function which causes the key's displayed character
to blink. Before performing the test, select Keyboard Type in the test parameters.
- 02. KEYBOARD LED ON enables the system to display the Num Lock, Caps Lock,
and Scroll Lock LEDs.
- 03. PS/2 MOUSE test checks whether or not a PS/2 mouse is connected. During
the test, no message appears on the screen.
KEYBOARD TEST (KBD) Error Log
Status
01
02
03
04
07
08
09
FF
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03. DISPLAY TEST checks the function of the display.
DISPLAY TEST (CRT) Error Log
Status
FF
Error name
CLOCK LINE ERROR L
CLOCK LINE ERROR H
DATA LINE ERROR L
DATA LINE ERROR H
INTERFACE ERROR
RESENDING ERROR
D ERROR
DATA COMPARE ERROR
Error name
DATA COMPARE ERROR
Hardware Diagnostics Program
Meaning
Clock line error (LOW)
Clock line error (HIGH)
Data line error (LOW)
Data line error (HIGH)
Interface error
Sending/receiving error
D error
Data comparing error
Meaning
Data comparing error
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