Undetermined Problems; Security Features; Passwords - IBM NetVista Hardware Maintenance Manual

Undetermined problems

1. Power-off the computer.
2. Remove or disconnect the following components (if installed) one at a time.
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 42.

Security features

Security features in this section include the following:
v Passwords
v Vital Product Data
v Management Information Format (MIF)
v Alert on LAN

Passwords

The following section provides information about computer hardware and
software-related passwords.
v Power-on Password
v Administrator Password
v Operating System Password
Message/Symptom
Serial or parallel port device failure (adapter
port)
Some or all keys on the keyboard do not
work
a. Non-IBM devices
b. External devices (modem, printer, or mouse)
c. Any adapters
d. Memory modules Before removing or replacing memory modules, see
"Installing memory modules" on page 33.
e. Extended video memory
f. External Cache
g. External Cache RAM
h. Hard disk drive
i. Diskette drive
FRU/Action
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
Chapter 7. Symptom-to-FRU index
71