Compal JHL90 - 12. Modem Troubleshooting

JHL90 Service Manual
6-28
12. Modem Troubleshooting
START
Perform telephone line
connection check
(Procedure 1)
Computer unable to
detect telephone
signal?
Check / replace
telephone line and
connections
Perform connection check
(Procedure 2)
Perform replacement check
(Procedure 3)
Replace system board
END
Yes
No
Figure 6-11 Modem troubleshooting process