Words On Fax Are Stretched; Incoming Fax Has Blank Spaces Or Poor Quality; No Dial Tone; Fax Dials A Number, But No Connection Is Made - Lexmark X925 Service Manual

Words on fax are stretched

The sending machine had a temporary jam.

Incoming fax has blank spaces or poor quality

1.
The sending fax machine may be faulty.
2.
The sending fax machine may have a dirty document glass.
3.
A noisy phone line can cause errors.
4.
Check the MFP print quality by making a copy.
5.
The print cartridge may be empty. Replace as necessary.

No dial tone

Step
1 Is the phone line properly connected to
the modem card and the wall jack?
2 Properly connect the phone line to the
modem card and wall jack.
Did this fix the problem?
3 Test the phone line's ability to send and
receive calls.
Did the phone line work properly?
4 Use the MFP on a properly functioning
phone jack.
Did this fix the problem?
5 Is the modem card cable properly
connected to the system board at J8 and
the modem card?
6 Properly connect the modem card cable
to the modem card and system board.
Did this fix the problem?
7 Check the modem card cable for
continuity. Is there continuity?
8 Check the voltages from connector
JMODEM1 on the RIP board. Check Pin
10 +3.3VDC, Pin 10 for +5VDC. 2, 4, 6,
and 8 are grounds. Are the signals or
voltages present?

Fax dials a number, but no connection is made

The other fax machine may be turned off. Ask the fax recipient to check their machine.
Questions / actions Yes
Go to step 3.
Problem resolved.
Go to step 5.
Problem resolved.
Go to step 7.
Problem resolved.
Go to step 8.
Replace the modem
card.
Diagnostic information
7541-03x
No
Go to step 2.
Go to step 3.
Go to step 4.
Go to step 5.
Go to step 6.
Go to step 7.
Replace the modem
card cable.
Replace the RIP board.
See "RIP board
removal" on
page 4-73.
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