Table 2-3 Error Symptoms List

Error Symptoms

Action/FRU

NOTE: To diagnose a problem, first find the error symptom in the left column. If directed to a check procedure, replace the FRU indicated in the check procedure. If no check procedure is indicated, the first Action/FRU listed in right column is the most likely cause.

Display problem:

Monitor signal connection/cable.

- Incorrect colors

Monitor

- No high intensity

System board

- Missing, broken,

or

 

incorrect

 

characters

 

- Blank

 

monitor(dark)

 

- Blank

 

monitor(bright)

 

- Distorted image

 

- Unreadable

 

monitor

 

- Other monitor

 

problems

 

 

 

Display changing

Monitor signal connection/cable

colors.

Monitor

 

 

System board

 

 

Display problem not

"Monitor" on page 102.

listed above

Load default settings (if screen is

(including blank or

readable).

illegible monitor).

System board

 

 

 

Parallel

NOTE: 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.

Make sure that the LPT# or COM# you test is the same as is set in BIOS Setup.

Loop-back.

System board.

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Page 86
Image 86
IBM 2169 manual Parallel