Apple emac ati usb2 2005 서비스 매뉴얼

50 - eMac ATI Graphics/USB 2.0/2005 Troubleshooting

Modem Symptom Charts

1.

Verify known-good analog (not digital) telephone line.

2.

Verify known-good RJ-11 telephone cable.

3.

Verify RJ-11 cable is not plugged into Ethernet port.

4.

Inspect RJ-11 connector and modem port for pin damage.

5.

Verify RJ-11 cable is firmly installed in the modem port.

6.

Boot from Apple Hardware Test (hold down the “C” key at startup). Under “Test Result”, check to see if 

the Modem reports' Device found'. If it reports “No Device Found”, proceed as the Error Code list 

recommends for Apple Hardware Test. See AppleCare Knowledge Base article 112125 - Service 

Diagnostics Matrix for Error Code information. 

7.

Open the bottom housing. Verify the internal RJ-11 modem cable is connected to the modem.

8.

Replace the RJ-11 cable/ jack.

9.

Replace the modem.

10. Replace the logic board.