Lenovo ThinkPad 770E-ED Hardware Maintenance Manual for 770 series notebooks(J - Page 71

Peripheral-Device-Related Symptoms, Power-Related Symptoms, The PC Card does

Page 71 highlights

SYMPTOM-TO-FRU INDEX Symptom / Error The PC Card does not work. FRU / Action in Sequence 1. Reseat the PC Card 2. Check that the PC Card is enabled in the ThinkPad Configuration program 3. Reseat the PCMCIA slot assembly. 4. PCMCIA slot assembly 5. System board Peripheral-Device-Related Symptoms Symptom / Error The external monitor does not work correctly. Printer problems. Serial or parallel port device problems. FRU / Action in Sequence Connect the external monitor to another PC. If the monitor works fine, replace the system board. If not, replace the external monitor. 1. Run printer self-test. 2. Parallel port wrap test. 3. System board 4. Printer cable 1. Serial/parallel port wrap test. 2. Device 3. Reseat the DC-DC card 4. DC-DC card 5. System board 6. Device cable Power-Related Symptoms Symptom / Error FRU / Action in Sequence Power shuts down during operation. 1. Go to "Power Systems Checkout" on page 36. 2. Battery pack 3. Remove the battery pack and let it cool for 2 hours. 4. DC-DC card 5. System bard 6. Check the power outlet The system does not power off. (See "Reset Switch" on page 23.) 1. Press the power shutdown switch. 2. DC-DC card 3. System board ThinkPad 770, 770E, 770X and 770Z 65

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SYMPTOM-TO-FRU INDEX
Symptom / Error
FRU / Action in Sequence
The PC Card does not
work.
1.
Reseat the PC Card
2.
Check that the PC
Card is enabled in the
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.
Connect the external
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.
3.
System board
4.
Printer cable
Serial or parallel port device
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
Power-Related Symptoms
Symptom / Error
FRU / Action in Sequence
Power shuts down during
operation.
1.
Go to “Power
Systems Checkout”
on page
36.
2.
Battery pack
3.
Remove the battery
pack and let it cool for
2 hours.
4.
DC-DC card
5.
System bard
6.
Check the power outlet
The system does not power
off.
(See “Reset Switch” on
page 23.)
1.
Press the power
shutdown switch.
2.
DC-DC card
3.
System board
ThinkPad 770, 770E, 770X and 770Z
65