Panasonic UF-780/790 operating instructions 129

Troubleshooting

If You Have Any of These Problems

Mode	Symptom		Cause / Action	Page
Print Copy Quality	Vertical lines printing	Print out a Journal report (e.g. FUNCTION, 6, 1 , SET and 1)		116
	on the received	and check quality to make sure whether your machine has		16
	document	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.
	Fuzzy print	1.	Make sure you are using the correct paper for the best	146
			possible print quality.
		2.	Try reversing the recording paper to the other side.
	Missing dots or lines/	1.	Make sure you are using the correct paper for the best	146
	inconsistent darkness		possible print quality.
	within print	2.	Replace the Toner Cartridge.	16
	Fading print	Your Toner Cartridge may be running out of toner. Replace		16
		the Toner Cartridge.
	Faint print	You may need to choose a different paper for the best		146
		possible print quality.
Communication	No dial tone	1.	Check the connection of the telephone line.	142
		2.	Check the telephone line.
	No auto answer	1.	Check the connection of the telephone line.	142
		2.	Check the Reception mode setting.	62
		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.
	Cannot transmit or	An information code will be shown on the display. Refer to the		132
	receive	information code table to find out the trouble.
No Unit Operation	No unit operation	To reset the machine, turn-off the Power Supply for a few		22
		seconds then turn it on again.

Problem Solving

129