
2 Troubleshooting Procedures
2.11 modem TroubleshootingSTART
Computer unable to
detect telephone signal?
END
Perform connection check
(Procedure 2)
Perform replacement
check
(Procedure 3)
Perform telephone line
connection check
(Procedure 1)
Check / replace
telephone line and
connections
Yes
Replace system board
No
Figure 2-11 Modem troubleshooting process
2-30
[CONFIDENTIAL]