Troubleshooting
OPERATION GUIDE 10-5
10
USB memory not
recognized.
Check that the USB memory
is securely plugged into the
machine.
——
Is the USB host blocked? Select Unblock in the USB host
settings.
Perform Gray
Adjustment in the
System Menu. is
displayed.
Over long periods of use, the
effects of the ambient
temperature and humidity
can cause color output hues
to vary slightly.
Whenever the printed hues differ
from the original document or
image, carry out Gray Adjustment.
Symptom Checkpoints Corrective Actions
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