Lenovo NetVista A20 Hardware Maintenance Manual for NetVista 6266, 6270, 6276, - Page 56

Error Symptoms, Action/FRU, Real-Time Clock, Audio, Video and Monitor, Table 2-3 Error Symptoms List - drivers

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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. CD-ROM drive cannot load or eject when the system is turned on and its eject button is pressed and held. CD-ROM drive power. "CD-ROM Drive" on page 63. CD-ROM drive CD-ROM drive does not read and there are no error codes or messages are displayed. CD may have dirt or foreign material on it. Check with a known good disc. Make sure that the CD-ROM driver is installed properly. CD-ROM drive. CD-ROM drive can play audio CD but no sound output. Make sure that the headphone jack of the CD-ROM has an output, then check if the audio cable from CD-ROM drive to system board CD audio connector is connected properly. Turn up the sound volume. Speaker power/connection/cable. CD-ROM drive. Real-Time Clock Real-time clock is inaccurate. Make sure that the information in the Date and Time of BIOS Setup is set correctly. Load default settings. RTC battery. System board Audio Audio software program invokes Speaker power/connection/cable. but no sound comes from speakers. Video memory test failed. Video adapter failed. 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. Video and Monitor Remove all non-factory cards. Load default settings (if screen is readable). System board Monitor signal connection/cable. Monitor System board Monitor signal connection/cable Monitor System board 56

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56
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.
CD-ROM drive cannot load or
eject when the system is
turned on and its eject button
is pressed and held.
CD-ROM drive power.
"CD-ROM Drive" on page 63.
CD-ROM drive
CD-ROM drive does not read
and there are no error codes
or messages are displayed.
CD may have dirt or foreign material on it. Check with a known good
disc.
Make sure that the CD-ROM driver is installed properly.
CD-ROM drive.
CD-ROM drive can play audio
CD but no sound output.
Make sure that the headphone jack of the CD-ROM has an output,
then check if the audio cable from CD-ROM drive to system board CD
audio connector is connected properly.
Turn up the sound volume.
Speaker power/connection/cable.
CD-ROM drive.
Real-Time Clock
Real-time clock is inaccurate.
Make sure that the information in the Date and Time of BIOS Setup is
set correctly.
Load default settings.
RTC battery.
System board
Audio
Audio software program invokes
but no sound comes from
speakers.
Speaker power/connection/cable.
Video and Monitor
Video memory test failed.
Video adapter failed.
Remove all non-factory cards.
Load default settings (if screen is readable).
System board
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
Monitor signal connection/cable.
Monitor
System board
Display changing colors.
Monitor signal connection/cable
Monitor
System board