IBM 1220 - Manual (Page 44)

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Solving printing problems
Symptom Cause Solution
The operator panel
display is blank or
displays only
diamonds. The printer self test failed. Turn the printer off, wait about 10 seconds, and turn
the printer back on.
Performing Self Test appears on the display.
When the test is completed, the Ready message is
displayed.
If the messages do not appear, turn the printer off
and call for service.
Jobs do not print. The printer is not ready to
receive data. Make sure Ready or Power Saver appears on the
display before sending a job to print. Press Go to
return the printer to the Ready state.
The specified output bin is full. Remove the stack of paper from the output bin, and
then press
Go .
The specified tray is empty. Load paper in the tray.
See Loading the trays for detailed instructions.