Undetermined Problems - IBM NetVista 6058 Hardware Maintenance Manual

Message/Symptom
Serial or parallel port device failure (system board
port)
Serial or parallel port device failure (adapter port)
Some or all keys on the keyboard do not work

Undetermined problems

Check the power supply voltages. See "Power supply" on page 30. If the
voltages are correct, return here and continue with the following steps.
1. Power-off the computer.
2. Remove or disconnect the following components (if installed) one at a
time.
a. Non-IBM devices
b. External devices (modem, printer, or mouse)
c. Any adapters
d. Riser card
e. Memory modules
f. Extended video memory
g. External Cache
h. External Cache RAM
i. Hard disk drive
j. Diskette drive
3. Power-on the computer to re-test the system.
4. Repeat steps 1 through 3 until you find the failing device or adapter.
If all devices and adapters have been removed, and the problem continues,
replace the system board. See "Replacing a system board" on page 45.
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Hardware Maintenance Manual: IBM NetVista Computer Types 6058, 6059, 6269, 6568, 6569, 6578, 6579, 6648,
6649
Before removing or replacing memory modules, see "System board
memory" on page 55.
FRU/Action
1. External Device Self-Test OK?
2. External Device
3. Cable
4. System Board
1. External Device Self-Test OK?
2. External Device
3. Cable
4. Alternate Adapter
5. System Board
1. Keyboard
2. Keyboard Cable
3. System Board