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Internal modem – Apple Mac PowerBook 550c User Manual

Page 51

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Troubleshooting

Symptom Charts/Internal Modem

(Continued)

- 24

Internal Modem

(Continued)

Modem does not

respond to incoming

call

1 If computer is in sleep mode, verify that Wake On Ring option

in CDEV is selected.

2 Check phone cord connection and operation.

3 Replace modem card.

4 Replace motherboard.

Modem has no sound

output

1 Verify that Control Panel volume setting is above 0.

2 Replace modem card.

3 Replace interconnect board.

4 Replace motherboard.