User's Manual

Chapter 5 Troubleshooting
34
CAUTION
Never open the front cover during printing.
Press the ONLINE key to stop printing and then open the front cover.
• This error occurs if the front cover is opened.
The ONLINE lamp blinks.
Closing the front cover will remove the cause
of this error. The printer is in the offline state
while the cover is opened
.
• The jam sensor is defective when loading fanfol
d
paper.
Press the ONLINE key to recover the printe
r
from this error.
The paper jam detection function is disabled.
Remove paper dust from the jam sensor, and loa
d
fanfold paper again.
The paper jam sensor may not function properl
y
when the sensor is exposed to a direct light o
r
sunlight especially at using the rear tractor.