Sensor Failure Table - Ricoh FT7770 Service Manual

Sensor Failure Table

7.
Name
One-turn
Sensor
Feed-in
Sensor
Registration
Sensor
Exit Sensor
Inverter
Registration
Sensor
Inverter
Entrance
Sensor
CFF Set
Sensor
CFF
Feed Hole
Sensor
Machine Displays
Condition
Open When the main switch is turned on,
the feed-in clutch energizes and
cycles the one-turn disk for about
2 seconds; then, the Original Misfeed
indicator lights.
originals, the feed-in clutch rotates
more than one turn (about 2 seconds)
and originals may be torn.
Short Same as the open condition
Open The Insert Original indicator
remains lit even when an original
is inserted.
When the main switch is turned on,
Short
the Original Misfeed indicator turns
on and remains lit, even after the
feed-in unit cover is opened and
closed.
Open The feed-in motor does not turn on
and the original misfeed indicator
lights. The indicator can not be
reset
Same as the open condition
Short
Open Same as Registration Sensor.
Short Same as Registration Sensor.
When an inverter function is
Open
but the Original Misfeed indicator
lights and can not be reset.
Short Same as the open condition.
Open The feed-in motor does not turn on
and the original misfeed indicator
lights. The indicator can not be
reset.
Same as the open condition.
Short
CFF mode cannot be used.
Open
Original Misfeed indicator turns on when the
Short
Start key is pressed.
Open
Original Misfeed indicator turns on in CFF mode.
Short
Original Misfeed indicator turns on in CFF mode.
When feeding
selected, the function is completed,
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April, '89