12-6.4Th Mirror Movement; 4Th Mirror Movement - Minolta EP3010 Manual

1173SBM1206A

12-6. 4th Mirror Movement

The 4th Mirror is moved to vary the conjugate distance for a particular zoom ratio by driving
the rack-and-pinion gears at the front and rear ends of the mirror using the Mirror Motor
(stepping motor). The Levers of the Holder to which the Mirror is mounted slide along a
tilted rail to change the Mirror angle. This ensures that the light strikes the surface of the PC
Drum in the direction of the normal, thereby preventing resolution from being degraded.
Mirror Reference Position Sensor is used to control the position of the 4th Mirror. It ensures
that the Mirror is located at the home position when the copier is turned ON.
Mirror Reference Position Sensor PC86
Mirror
Motor
M6
Control Signal
M6 PWB-F
Control Signal
PC86 PWB-A PJ40A-2
Levers
4th Mirror
Drive Shaft
Tilt Adjusting Screw
Lever
Energized
L
Blocked
L
M-31
1139M037AA
1139M038AA
Deenergized WIRING DIAGRAM
H
Unblocked WIRING DIAGRAM
H
8-B
7-A