Modem

No modem dial tone

  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. Verify correct modem driver is installed and the correct CCL is selected. If the problem persists, reinstall system software.
  7. Open the bottom housing. Verify the internal RJ-11 modem cable is connected to the modem.
  8. Replace the RJ-11 board.
  9. Replace the modem.
  10. Replace the logic board.
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