IBM 770 Hardwarehandbuch
SYMPTOM-TO-FRU INDEX
Symptom / Error
FRU / Action in Sequence
The PC Card does not
work.
work.
1. Reseat the PC Card
2. Check that the PC
2. Check that the PC
Card is enabled in the
ThinkPad Configuration
program
ThinkPad Configuration
program
3. Reseat the PCMCIA
slot assembly.
4. PCMCIA slot assembly
5. System board
Peripheral-Device-Related Symptoms
Symptom / Error
FRU / Action in Sequence
The external monitor does
not work correctly.
not work correctly.
Connect the external
monitor to another PC. If
the monitor works fine,
replace the system board.
If not, replace the external
monitor.
monitor to another PC. If
the monitor works fine,
replace the system board.
If not, replace the external
monitor.
Printer problems.
1. Run printer self-test.
2. Parallel port wrap test.
2. Parallel port wrap test.
3. System board
4. Printer cable
4. Printer cable
Serial or parallel port device
problems.
problems.
1. Serial/parallel port
wrap test.
2. Device
3. Reseat the DC-DC
card
4. DC-DC card
5. System board
6. Device cable
5. System board
6. Device cable
Power-Related Symptoms
Symptom / Error
FRU / Action in Sequence
Power shuts down during
operation.
operation.
1. Go to “Power
Systems Checkout”
on page 36.
on page 36.
2. Battery pack
3. Remove the battery
pack and let it cool for
2 hours.
2 hours.
4. DC-DC card
5. System bard
5. System bard
6. Check the power outlet
The system does not power
off.
(See “Reset Switch” on
page 23.)
off.
(See “Reset Switch” on
page 23.)
1. Press the power
shutdown switch.
2. DC-DC card
3. System board
3. System board
ThinkPad 770, 770E, 770X and 770Z
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