Lexmark 5400 - Manual (Page 102)

Cannot scan to a computer over a network
Review scanning steps See “Scanning to a computer over a network” on page 68.
Fax troubleshooting
• “Cannot send or receive a fax” on page 102
• “Can send but not receive faxes” on page 103
• “Can receive but not send faxes” on page 104
• “Printer receives a blank fax” on page 105
• “Received fax has poor print quality” on page 105
• “Caller ID information is not displayed” on page 106
Cannot send or receive a fax
Check messages If an error message is displayed, follow the instructions on the error message dialog.
Check power
If the light is not on, see “Power button is not lit” on page 94.
Check cable
connections Make sure cable connections for the following hardware are secure, if applicable:
• Power supply
• Telephone
• Handset
• Answering machine
Check the telephone
wall jack 1 Plug a telephone into the wall jack.
2 Listen for a dial tone.
3 If you do not hear a dial tone, plug a different telephone into the wall jack.
4 If you still do not hear a dial tone, plug a telephone into a different wall jack.
5 If you hear a dial tone, connect the printer to that wall jack.
Review digital phone
service checklist The fax modem is an analog device. Certain devices can be connected to the printer so that
digital telephone services can be used.
• If you are using an ISDN telephone service, connect the printer to an analog telephone port
(an R-interface port) on an ISDN terminal adapter. For more information and to request an
R-interface port, contact your ISDN provider.
• If you are using DSL, connect to a DSL filter or router that will support analog use. For more
information, contact your DSL provider.
• If you are using a PBX telephone service, make sure you are connecting to an analog
connection on the PBX. If none exists, consider installing an analog telephone line for the
fax machine. For more information on faxing when using a PBX telephone service, see
“Setting up to fax while behind a PBX” on page 77.
Verify dial tone • Place a test call to the telephone number to which you want to send a fax to make sure that
it is working correctly.
• If the telephone line is being used by another device, wait until the other device is finished
before sending a fax.
• If you are using the On Hook Dial feature, turn up the volume to verify a dial tone.
Disconnect other
equipment temporarily To ensure the printer is working correctly, connect it directly to the telephone line. Disconnect
any answering machines, computers with modems, or telephone line splitters.
Check for paper jams Check for and clear any paper jams.
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