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2-14 Service Manual
4510-001
False Paper Present Indication
False Cover Open Indicator
Step
Paper LED off when
paper is not present
in the input tray
Yes No
1 Check the paper
present sensor
actuator for breakage
or binding. Is there
breakage or binding?
Replace the paper
present actuator.
Go to step 2.
2 Replace the sensor
board.
Step
The error LED is on
when the cover is
closed
Yes No
1 Open the front cover
and check the cover
open switch actuator
that is attached to the
front cover. Is the
actuator broken?
Replace the front
cover.
Go to step 2.
2 Disconnect the cover
open sensor connector
from the main board.
Check for continuity at
the connector while
deflecting the actuator
on the switch. Does
the continuity change
with deflection of the
actuator?
Replace the main
board.
Replace the cover
open switch.