Panasonic UF-790 Operating Instructions Manual page 129

Mode Symptom
Print Copy Quality Vertical lines printing
on the received
document
Fuzzy print
Missing dots or lines/
inconsistent darkness
within print
Fading print
Faint print
Communication No dial tone
No auto answer
Cannot transmit or
receive
No Unit Operation No unit operation
Cause / Action
Print out a Journal report (e.g. FUNCTION, 6, 1 , SET and 1)
and check quality to make sure whether your machine has
trouble.
If Journal report quality is OK, your machine has no problem,
report to the sending party that they have a problem.If copy is
NG, replace the Toner Cartridge.
1. Make sure you are using the correct paper for the best
possible print quality.
2. Try reversing the recording paper to the other side.
1. Make sure you are using the correct paper for the best
possible print quality.
2. Replace the Toner Cartridge.
Your Toner Cartridge may be running out of toner. Replace
the Toner Cartridge.
You may need to choose a different paper for the best
possible print quality.
1. Check the connection of the telephone line.
2. Check the telephone line.
1. Check the connection of the telephone line.
2. Check the Reception mode setting.
3. If the Fax Parameter No. 13 (AUTO JOURNAL PRINT) is
set to "Valid" (default setting) and the machine is printing
the received document from memory, which also happens
to be the 32th transaction, the machine will not auto answer
until the Transaction Journal completes printing.
An information code will be shown on the display. Refer to the
information code table to find out the trouble.
To reset the machine, turn-off the Power Switch for a few
seconds then turn it on again.
Troubleshooting
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