Apple PowerBook Duo Specifications download pdf (Page 39)

Troubleshooting Symptom Charts/Internal Modem

(Continued)

- 17

Internal Modem

(Continued)

Strange mix of

characters appears

on screen

1 Verify that baud rate and data format settings of

communications application are compatible with internal

modem and remote modem.

2 Check phone cord connection and operation.

3 Verify that System is 7.1 or later.

4 Remove and reseat modem interface board.

5 Disconnect Duo MiniDock from PowerBook and test

PowerBook internal modem.

6 Replace modem interface board.

7 Replace Duo MiniDock logic board.

Modem interferes

with system sound

1 Remove and reseat modem interface board.

2 Disconnect Duo MiniDock from PowerBook and test

PowerBook internal modem.

3 Replace modem interface board.

4 Replace Duo MiniDock logic board.

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Apple PowerBook Duo Specifications Page 39