Lenovo ThinkPad 770 ThinkPad 770 User's Guide - Page 137

A Television Problem, Other Option Problems

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Title: C79DMMST CreationDate: 07/16/97 13:09:22 Problem Wrong characters appear on the screen. Action Did you install the operating system or application program with the correct procedure? If you did, have the external display serviced. A Television Problem Problem The screen is blank. Action Even if you select the television for the external display ( ) in the ThinkPad program, the LCD always turns on first when you power on your computer. Press the Fn+F7 keys to switch to the television. Other Option Problems Problem An IBM option that you just installed does not work. An IBM option that used to work no longer works. Action Make sure that: The option is designed for your computer. The option was installed following to the instructions supplied with the option or this book. Other installed options or cables are not loose. There is no I/O address or interrupt level (IRQ) DMA channel conflict. To see the system resource status, start the ThinkPad Configuration program and click on the respective device buttons. If the test program for the option did not find the problem, have the computer and option serviced. Make sure that: The option is securely connected to your computer. If the option came with its own test instructions, use those instructions to test the option. There is no system resource conflict (see "Resolving System Resource Conflicts" in the online book). If these items are correct and the test program did not find the problem, have the computer and option serviced. Chapter 4. Solving Computer Problems 4-29

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Problem
Action
Wrong characters appear
on the screen.
Did you install the operating system or application program with the correct
procedure?
If you did, have the external display serviced.
A Television Problem
Problem
Action
The screen is blank.
Even if you select the television for the external display (
) in the ThinkPad
program, the LCD
always
turns on first when you power on your computer.
Press the
Fn
+
F7
keys to switch to the television.
Other Option Problems
Problem
Action
An IBM option that you
just installed does not
work.
Make sure that:
The option is designed for your computer.
The option was installed following to the instructions supplied with the option
or this book.
Other installed options or cables are not loose.
There is no I/O address or interrupt level (IRQ) DMA channel conflict.
To
see the system resource status, start the ThinkPad Configuration program
and click on the respective device buttons.
If the test program for the option did not find the problem, have the computer
and option serviced.
An IBM option that used
to work no longer works.
Make sure that:
The option is securely connected to your computer.
If the option came with its own test instructions, use those instructions to
test the option.
There is no system resource conflict (see “Resolving System Resource
Conflicts” in the online book).
If these items are correct and the test program did not find the problem, have
the computer and option serviced.
Chapter 4.
Solving Computer Problems
4-29
Title: C79DMMST CreationDate: 07/16/97 13:09:22