TroubleshootingSymptom Charts/Internal Modem (Continued) - 39

Internal Modem (Continued)

Strange mix of

1

Verify that baud rate and data format settings of

characters appears

 

communications application are compatible with internal

on screen

2

modem and remote modem.

 

Check phone cord connection and operation.

 

3

Verify that System is 7.1 or later.

 

4

Remove and reseat modem card.

 

5

Replace modem card.

 

6

Replace logic board.

Note: When replacing the logic board, check that the EMI clips are securely attached to the CPU stiffener. The “CPU Stiffener” topic in Take Apart helps you locate and identify the two EMI clips. If both clips are not secure, replace the CPU stiffener.

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Apple DUO 280C, DUO 27C, 250, 230, POWERBOOK DUO FLOPPY ADAPTER manual Internal Modem