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Troubleshooting Charts
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 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.
The serial port does not
work.
Make sure that the serial port is enabled by doing the following:
For Windows 95:
1. Start the ThinkPad Configuration program.
2. Click on Serial Port (
).
3. Select Enable.
4. Click on Device Manager.
5. Set up the port in the “Device Manager” window.
6. Click on OK.
For Windows NT:
1. Start the ThinkPad Configuration program.
2. Click on Serial Port (
).
3. Select Enable; then select COM1, COM2, COM3, or COM4.
4. Click on OK.
Chapter 4. Solving Computer Problems 141
Title: C79EGMST CreationDate: 02/10/98 09:24:42