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ML790/791 Printer Handbook 55
…there are dots missing in my printouts?
The head gap may not be set correctly. Try moving the head gap lever to a lower
setting. If that doesn’t help, the printhead may be damaged; call for service.
… the Alarm light is on and the Character Pitch 15 light is flashing?
This indicates a paper loading error. To stop the flashing light, press the SEL button.
Before trying to load paper in again, check to be sure that you have the paper lever in
the correct position (BOT, TOP, REAR) for the path you’re using.
Caution!
Always turn the printer off before you turn the platen knob!
If the paper lever is in the correct position and you’re using rear feed, lift up the paper
separator and check to be sure that paper is properly on the tractors and has not
jammed up somehow.
If the paper lever is in the correct position and you’re using the optional bottom-feed
push tractor, check the bottom tractor unit to be sure that paper is properly on the
tractors and has not jammed up before entering the printer.
Once the paper is correctly loaded, press and release the SEL button, then hold the
SHIFT button and press the RESET (Character Pitch) button.
…I need to load paper, but the Alarm light is not on?
If the Alarm light is off, the printer thinks it has paper loaded. To correct this problem,
press and release the SEL button, then hold the SHIFT button and press the RESET
(Character Pitch) button. The Alarm light will come on and you’ll be able to load
paper.