Troubleshooting guide
Other option problems
Problem Cause and 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 according 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 the option serviced.
An IBM option that used
to work no longer works.
Make sure that:
The option is securely connected to your computer.
The option passes its own test. If the option came with its own test
instructions, use those instructions to test the option.
There is no system resource conflict (
Online User's Guide
).
If these items are correct and the test program did not find the problem, have
the computer and the option serviced.
The serial connector does
not work.
Make sure that the serial connector is enabled by doing the following:
For Windows 98:
1. Start the ThinkPad Configuration program.
2. Click Serial Port (
).
3. Select Enable.
4. Click Device Manager.
5. Check the ports in the “Device Manager” window and make sure that the
settings are correct.
6. Click OK.
For Windows NT:
1. Start the ThinkPad Configuration program.
2. Click Serial Port (
).
3. Select Enable; then select COM1, COM2, COM3, or COM4.
4. Click OK.
152 IBM ThinkPad 600X User's Reference
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