2.11.12 Replacing the reverse junction solenoid
1. Turn off the main switch, and remove the ADF rear
cover (7 plated screws).
CAUTION
The ADF rear cover is made of metal. So, the
cover may touch electric elements on the
boards shorting them out when you remove the
cover. Be sure to turn off the main switch when
you remove the ADF rear cover.
2. Remove the ADF control board.
CAUTION
• Before installing the board, be sure to
connect the three connectors on both the
front and back of the board.
• Be sure not to damage electric elements on
the board.
• Be sure not to cut the harnesses by pulling
the board or rubbing the harnesses with the
edges of any brackets or plates.
• Do not pull the fiber optics cable when you
disconnect it from the ADF control board.
Grasp its connector using pliers and pull it
out.
3. Remove the solenoid plunger assembly (one
E-ring and spring).
4. Remove the two solenoid fixing screws from the
top.
5. Raise ADF and pull the solenoid out of the bottom
of the ADF.
6. Replace the solenoid and reassemble in the
reverse order.
Solenoid position standard
Check the operation of the reverse junction pawls by
pressing the solenoid plunger manually. Adjust the
solenoid position if necessary.
When the solenoid is energized, the
reverse junction guide (black plate) edge
and reverse junction pawls end are 4mm
apart. You can check this from the
bottom of the ADF by opening the
intermediate transport unit.
Reverse junction solenoid
Solenoid plunger
assembly
Reverse junction
pawl
Reverse junction guide
4 mm
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