Lenovo ThinkPad 390 Hardware Maintenance Manual (March 1999): ThinkPad 390E on - Page 56

Peripheral-Device-Related Symptom, Intermittent Problems - thinkpad 390e drivers

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Symptom/Error Battery fuel-gauge does not go higher than 90%. System configuration does not match the installed devices. System hangs intermittently. FRU/Action in Sequence 1. Remove Battery ASM and let it cool for 2 hours. 2. Refresh battery (continue using battery in BIOS Setup mode until power off, then charge battery). 3. Battery 4. DC/DC & Charger board 5. System board 1. Load Setup Defaults and reboot the system. 2. Reseat the Combobay ASM. 1. Reseat Hard Disk/Combobay ASM. 2. Fan ASM 3. System board Peripheral-Device-Related Symptom Symptom/Error External display does not work correctly. USB does not work correctly. Print problems. Serial or parallel port device problems. FRU/Action in Sequence System board System board Run printer self-test. Printer driver Printer cable System board Device driver Device cable Device System board Note: If you cannot find a symptom or an error in this list and the problem remains, see "Undetermined Problems" on page 47. Intermittent Problems Intermittent system hang problems can be caused by a variety of reasons that have nothing to do with a hardware defect, such as cosmic radiation, electronic discharge, or software errors. FRU replacement should be considered only when a recurring problem exists. When analyzing an intermittent problem, do the following: 1. Run the advanced diagnostic test for the system board in loop mode at least 10 times. 2. If no error is detected, do not replace any FRUs. 46 ThinkPad 390E

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Symptom/Error
FRU/Action in Sequence
Battery fuel-gauge
does not go higher
than 90%.
1.
Remove Battery ASM and let
it cool for 2 hours.
2.
Refresh battery (continue
using battery in BIOS Setup
mode until power off, then
charge battery).
3.
Battery
4.
DC/DC & Charger board
5.
System board
System configuration
does not match the
installed devices.
1.
Load Setup Defaults and
reboot the system.
2.
Reseat the Combobay ASM.
System hangs
intermittently.
1.
Reseat Hard Disk/Combobay
ASM.
2.
Fan ASM
3.
System board
Peripheral-Device-Related Symptom
Note:
If you cannot find a symptom or an error in this list
and the problem remains, see “Undetermined
Problems” on page
47.
Symptom/Error
FRU/Action in Sequence
External display does
not work correctly.
System board
USB does not work
correctly.
System board
Print problems.
±
Run printer self-test.
±
Printer driver
±
Printer cable
±
System board
Serial or parallel port
device problems.
±
Device driver
±
Device cable
±
Device
±
System board
Intermittent Problems
Intermittent system hang problems can be caused by a
variety of reasons that have nothing to do with a hardware
defect, such as cosmic radiation, electronic discharge, or
software errors. FRU replacement should be considered
only when a recurring problem exists.
When analyzing an intermittent problem, do the following:
1.
Run the advanced diagnostic test for the system
board in loop mode at least 10 times.
2.
If no error is detected, do not replace any FRUs.
46
ThinkPad 390E