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Function-Related Symptoms
Symptom / Error FRU / Action in Sequence
The system will not suspend
or resume by opening or
closing the LCD.
1. Go to “Suspend
Mode” on page 276,
and check that the
computer can enter
suspend mode.
2. Boot an operating
system and press
Fn+F4. If the
computer enters
suspend mode,
suspect that the
application program is
not working properly.
3. LCD Assembly
4. System Board
Battery Fuel-Gauge does
not go higher than 90%.
Go to “Checking the
Battery Pack” on
page 274 and see the
note.
Memory count (size)
appears different from
actual size.
Go to “Memory Checkout”
on page 269.
System configuration does
not match the installed
devices.
Go to “Checking the
Installed Devices List” on
page 293.
System hangs intermittently. Go to “Intermittent
Problems” on page 289.
Peripheral-Device-Related Symptoms
Symptom / Error FRU / Action in Sequence
External display does not
work correctly.
1. See “External Display
Self-Test” in
“Common Devices
Checkout” section.
Printer problems. 1. Run Printer Self-test.
2. Parallel Port Device
3. Cable
4. System Board
Serial or parallel port device
problems.
1. Device
2. Device Cable
3. System Board
288 IBM Mobile Systems - ThinkPad HMM Volume 3