Motor Driver Board; Imaging Unit Sensor Board - Oki ES3640MFP Component Replacement Manual

Motor Driver Board

1.
Remove the Rear Cover.
2.
Remove the Right Rear Cover.
3. Remove the Card Cage Fan Duct.
4.
Remove the Card Cage.
5.
Remove 2 (metal, 6 mm) screws that secure the Magenta Imaging Unit Motor.
6. Remove 2 (metal, 6 mm) screws that secures the Yellow Imaging Unit Motor.
7.
Remove the (Yellow) and (Magenta) connections from the Motor Driver Board.
8.
Remove the remaining connections from the Motor Driver Board.
9. Remove 2 (metal, 6 mm) screws at the top of the Motor Driver Board.
10.
Lift the board slightly to release it from the hooks along the lower edge.
11.
Remove the Motor Driver Board.

Imaging Unit Sensor Board

The Imaging Unit Sensor Board is held in the Toner Supply Housing. Remove the housing to facilitate
replacement of the board.
Note
A non-captive spring is installed in the Toner Supply Housing just below the Cyan contacts. Removal of the
Toner Supply Housing allows this spring to fall from its hole.
1.
Remove the Rear Cover.
2. Remove the Right Rear Cover.
3.
Remove the Card Cage Fan Duct.
4.
Remove the Card Cage.
5. Remove the Black Imaging Unit Motor.
6.
Release the 2 Toner Motors from their mounts.
7.
Release the Up/Down Sensor from the holder next to the Card Cage Fan.