IBM Aptiva 2190 Hardware Maintenance Service page 84

Table 2-3 Error Symptoms List
Error Symptoms
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:
- Incorrect colors
- No high intensity
- Missing, broken, or
incorrect characters
- Blank monitor(dark)
- Blank monitor(bright)
- Distorted image
- Unreadable monitor
- Other monitor problems
Display changing colors.
Display problem not listed
above (including blank or
illegible monitor).
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.
Printing failed.
Printer problems.
2-20
Action/FRU
Monitor signal connection/cable.
Monitor
System board
Monitor signal connection/cable
Monitor
System board
"Monitor" on page 2-38.
Load default settings (if screen is readable).
System board
Parallel/Serial Ports
Make sure that the LPT# or COM# you test is
the same as is set in BIOS Setup.
Loop-back.
System board.
Make sure that the printer driver is properly
installed.
Refer to the service manual for the printer.
Printer.
Printer cable.
System board.
Refer to the service manual for the printer.