Ld Unit And Polygon Motor Replacement - Ricoh A109 Service Manual

5.3 LD UNIT AND POLYGON MOTOR REPLACEMENT

[A]
CAUTION: a) Do not loosen the screws securing the LD drive
board to the laser diode casing. Doing so would
throw the LD unit out of adjustment.
b) Do not adjust the VR's on the LD unit as they are
adjusted at the factory.
c) Never touch the polygon mirror reflecting surface
with bare hands.
1. Turn off the main switch and unplug the machine.
2. Remove the optical housing unit [A]. (See the optical housing unit
replacement procedure.)
– LD unit –
3. Remove the LD unit [B] from the optical housing unit (2 screws).
NOTE: When replacing the LD unit, make sure that the white
connector socket is located at the right (front view).
– Polygon motor –
3. Remove the polygon motor [C] from the optical housing unit
(2 screws).
NOTE: When replacing the polygon motor, make sure that the
connector is located at the front.
A109
[B]
[C]
5-36 FSM