v Sticky keys caused by spilling liquid onto the keyboard
The following symptoms might indicate damage caused by
v Missing parts might be a symptom of unauthorized
service or modification.
v Hard disk drive spindles can become noisy from being
subjected to excessive force or from being dropped.
How to Disable the Password
There are three passwords used at a typical customer site:
the Supervisor Password, the hard disk drive password,
and the Power On password.
v Power On password:
1. Power off the computer.
2. Remove the battery pack and AC Adapter.
3. Remove the keyboard, see "1020 Keyboard ASM" on
4. Short the jumper JP1. See the following figure:
5. Replace the keyboard.
6. Power on the computer and wait until POST ends.
7. Verify that the password prompt does not appear.
v Supervisor and hard disk drive passwords:
The Supervisor Password and hard disk drive password
are security features that are used to protect the system
and the hard disk drive data from unauthorized access.
No overriding capability is provided, so they cannot be
replaced if they are forgotten. If the customer forgets the
Supervisor Password, the system board must be
replaced. If the customer forgets the hard disk drive
password, the hard disk drive must be replaced.
ThinkPad s30, s31