Ricoh D131 - Ld Unit, Polygon Motor and Polygon Motor Drive Board

Laser Unit
SM 4-29 D131/D132/D133
Replacement
and
Adjustment
4.5.2 LD UNIT, POLYGON MOTOR AND POLYGON MOTOR DRIVE
BOARD
1. Exposure glass p.4-13
2. Polygon motor cover [A] (
x 6)
 An accidental static discharge could damage the LDB (Laser Diode Board). Touch a
metal surface to discharge any static electricity from your hands.
 The polygon motor rotates at extremely high speed and continues to rotate after
switching the machine off. To avoid damaging the motor, never remove the polygon
motor within three minutes of switching off the machine and disconnecting its power
plug.
3. Remove;
 LD unit [B] (
x 2, x 3)
 Polygon motor [C] (
x 3, x 1)
 Polygon motor drive board [D] (
x 3, x 3)