4Th Mirror Movement - Minolta EPI 054 User Manual

FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 GENERAL, MECHANICAL/ELECTRICAL
98.04.24
1174SBM0906A
9-6.

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.
The 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
M7
Lever
Control Signal
M7 PWB-A PJ16A-2B
Control Signal
PC86 PWB-A PJ22A-5
Levers
4th Mirror Drive Shaft
Tilt Adjusting Screw
1139M038AA
Energized Deenergized WIRING DIAGRAM
L
Blocked Unblocked
L
M-26
1139M037AA
H 8-B/8-F
WIRING DIAGRAM
H 12-A