LCD Problems
Problems
Action
Blank screen with
no beep.
Note
If you are not sure
about the beep, turn
the computer off, then
turn the computer on
again, and listen for
the beep.
Verify that:
1.
The Dock II power cord is plugged into a working
electrical outlet and into the Dock II.
2.
The cables connected to the Dock II are securely
connected. (For locations where cables are connected, see
“Locating Dock II Features” on page 4.)
3.
The power switch is turned on.
4.
The security lock is not in the extreme left position.
5.
The computer is firmly installed on the Dock II.
If the above items are correct and the screen remains blank,
have the system unit serviced.
Blank screen with one
beep.
Note
If you are using an
external display, go to
“External Display
(CRT) Problems” on
page 89.
When you are using an external display with a display
adapter, a blank screen is normal.
When you return to operating mode from suspend mode, one
beep sounds and the suspend LCD on the computer blinks
and a power-on password is required. The cursor does not
appear as you type the power-on password, but it is entered.
Verify that:
1.
Both the brightness and contrast controls on the computer
are correctly adjusted.
2.
The Display device parameter in the ThinkPad Features
menu is correctly specified. Refer to the information
supplied with your computer.
If the above items are correct and the screen remains blank,
have the system unit serviced.
94
IBM ThinkPad Dock II User's Guide
Title: C78JAMST CreationDate: 05/06/94 19:15:58
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