Undetermined Problems - Lenovo ThinkCentre 3026 Maintenance Instructions Manual

Undetermined problems

If you encounter undetermined problems, do the following:
1. Turn off the computer and the power.
2. Remove or disconnect the following components (if installed) one at a time.
3. Turn on the power and the computer to re-test the system.
4. Repeat steps 1 through 3 until you find the failing device or adapter cards.
If all devices and adapter cards have been removed, and the problem continues,
replace the system board. See .
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Hardware Maintenance Manual
Message/Symptom
Non-system disk or disk error-type message
with a known-good diagnostic diskette.
Other display symptoms not listed above
(including blank or illegible display)
Power-on indicator or hard disk drive in-use
light not on, but computer works correctly
Printer problems
Program loads from the hard disk with a
known-good diagnostics diskette in the first
3.5-inch diskette drive
PXE computer cannot access programs from
its own hard disk.
PXE computer does not PXE from server
Some or all keys on the keyboard do not
work
a. External devices (modem, printer, or mouse)
b. Any adapter cards
c. Memory modules
d. Extended video memory
e. External Cache
f. External Cache RAM
g. Hard disk drive
h. Diskette drive
FRU/Action
1. Diskette Drive
2. System Board
3. Diskette Drive Cable
1. Display
2. System Board
1. Power switch/LED assembly
2. System Board
1. Printer
2. System Board
1. Run the Setup and Utility program and
check Startup sequence.
2. Diskette Drive
3. Diskette Drive Cable
4. System Board
5. AC/DC power adapter
Replace the hard disk drive
1. Check startup sequence
2. Check the network adapter LED status
1. Keyboard
2. Keyboard Cable
3. System Board