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
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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