Oki ML490 ML490/491 User's Guide (American English) - Page 63

paper jam situation. See Clearing Paper Jams,

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Problem There are dots missing in my printouts. Solution The head gap may not be set correctly. Try moving the headgap lever to a lower setting. If that doesn't help, the printhead may be damaged; call for service. Problem The ALARM light is flashing. Solution Try turning the printer off and then back on again. If the light still blinks, call for service. Problem The ALARM light is on and the Character Pitch 10 light is flashing. Solution This indicates that the paper lever is set at the wrong position for the paper you are trying to use. Move it to the proper setting. Problem The ALARM light is on and the Character Pitch 15 light is flashing. Solution This indicates a paper jam. Press the SEL key and correct the paper jam situation. See "Clearing Paper Jams," in Chapter 4. Troubleshooting 63

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Troubleshooting
63
Problem
There are dots missing in my printouts.
Solution
The head gap may not be set correctly. Try moving the headgap
lever to a lower setting. If that doesn’t help, the printhead may
be damaged; call for service.
Problem
The ALARM light is flashing.
Solution
Try turning the printer off and then back on again. If the light
still blinks, call for service.
Problem
The ALARM light is on and the Character Pitch 10 light is
flashing.
Solution
This indicates that the paper lever is set at the wrong position
for the paper you are trying to use. Move it to the proper
setting.
Problem
The ALARM light is on and the Character Pitch 15 light is
flashing.
Solution
This indicates a paper jam. Press the
SEL
key and correct the
paper jam situation. See “Clearing Paper Jams,” in Chapter 4.