Apple POWERBOOK DUO FLOPPY ADAPTER Laptop User Manual


 
Troubleshooting Symptom Charts/Internal Modem (Continued) - 39
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 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.