Lexmark 7003-050 X340n, Service Manual

Page: 44 / 162

Diagnostic information
2-23
7003-XXX
Fax quality service check
Diagnosing fax problems
Note: Some fax-quality issues might be scanner-related. See “Scan quality service checks” on page 2-37 .
Fuser service check
When toner is partially fused to the paper, it is usually caused by low fuser temperature.
Note: Improper fusing can result from incorrect media settings in the driver, or on the MFP. Check those
settings before servicing the fuser.
Note: Make sure the correct voltage fuser is being used on the MFP.
Warning: Avoid handling the lamp as much as possible, as it is easily broken. Be careful not to touch the glass
housing with bare hands, because skin acids can weaken the glass. The lamp is not a service part.
The line voltage to the MFP must be within the following limits:
•
100 V ac–127 V ac for the 110 V model MFP
•
200 V ac–240 V ac for the 220 V model MFP
Turn the MFP off, and wait a few minutes for the fuser lamp to cool. Turn the MFP on, and observe the lamp
turning on during POST.
You can see the light from the lamp by opening the left side cover and observing the upper
opening through which the fuser power cables pass.
Problem Solution
No dial tone See “Modem service check” on page 2-26 .
Ring tone volume for incoming faxes too low Replace controller card.
Document does not feed in the ADF. See “ADF service check” on page 2-19 .
Lines on documents sent out. Check the flatbed glass for marks or scratches.
SCVERR:facdata.c725
is displayed when
faxing a job larger than254 pages.
Break the job up into multiple jobs leess than 254 pages.
Some words on an incoming fax are stretched. Fax machine sending the fax had a temporary jam.
Fax quality low, erratic performance Update firmware to build 115.
FAX INITIAL FAIL
is displayed Inspect the modem cable. Replace the modem cable if
needed.
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