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Panel light state
Paper Out
Pause
Pause
All the lights
on the control
panel
= on,
= off,
= flashing
= short series of beeps (three beeps)
----- = long series of beeps (five beeps)
– = None (no beeps)
= short series of beeps (five beeps x2)
Problems and Solutions
Most problems you may encounter while operating your printer have simple solutions. Use the
information in this section to find the source of and solution to printer problems that occur.
Determine the type of problem that occurred, and see the appropriate section below:
"Power supply problems" on page 75
"Paper Handling" on page 79
"Printing position problems" on page 78
"Printing or printout quality problems" on page 75
Beep pattern
Problem
Solution
-----
Single sheet paper is not fully ejected.
Press the Load/Eject button to eject the sheet.
-----
Continuous paper is not fed to the standby position.
Tear off the printed page at the perforation; then press the Load/
Eject button. The printer feeds the paper to the standby position.
-----
Paper is jammed in the printer.
To clear the paper jam, see "Clearing a Paper Jam" on page 82.
–
The print head is overheated.
Wait for a few minutes; the printer resumes printing automatically
once the print head cools.
An unknown printer error has occurred.
Turn off the printer and leave it off for several minutes; then turn it
on again. If the error occurs again, contact your dealer.
LQ-780/LQ-780N
User's Guide
Troubleshooting
74
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