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Modem Board Checkout
Do the following to isolate the problem to the system
internal modem:
1. Boot from and start PC Doctor. (See “PC Doctor
System Diagnostics” on page 51 for details.)
2. Select Diagnostics.
3. Select Other Devices.
4. Run Modem Loopback Test and Modem
Dialtone/DTMF Test.
5. Follow the instructions in the message window.
6. If the test detects a modem problem, replace the
modem card.
32 ThinkPad 390E