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Chapter 4 56
Video memory test failed.Video adapter failed. 1.Remove all non-factory-installed cards.
2.Load default settings (if screen is readable).
3.Main board
Display problem:
-Incorrect colors
No high intensity
Missing, broken, or incorrect characters
Blank monitor (dark)
Blank monitor (bright)
Distorted image
Unreadable monitor
1.Monitor signal connection/cable.
2.Monitor
3.Video adapter card
4.Main board
Other monitor problems
Display changing colors. 1.Monitor signal connection/cable
2.Monitor
3.Main board
Display problem not listed above (including blank or
illegible monitor).
1.”Monitor"
2.Load default settings (if screen is readable).
3.Main board
Parallel/Serial Ports
Execute “Load BIOS Default Settings” in BIOS Setup to confirm ports presence before diagnosing any
parallel/serial ports problems.
Serial or parallel port loop-back test failed. 1.Make sure that the LPT# or COM# you test is the
same as the setting in BIOS Setup.
2.Loop-back.
3.Main board
Printing failed. 1.Ensure the printer driver is properly installed.
Refer to the printer service manual.
2.Printer.
3.Printer cable.
4.Main board.
Printer problems. 1.Refer to the service manual for the printer.
Keyboard
Some or all keys on keyboard do not work. 1.Keyboard
Power Supply
Pressing power switch does not turn off system.
(Only unplugging the power cord from electrical
outlet can turn off the system.)
1.Ensure the Soft-off by PWR-BTTN. in BIOS Setup
of Power Management is not set to Instant-off.
2.Power switch cable assembly
Pressing power switch does not turn on the system. 1.Ensure the power override switch (situated at the
back of the machine, just above the connector for
the power cable) is not set to OFF.
2.Power switch cable assembly.
Error Symptom Action/FRU