Lens Movement - Minolta EPI 054 User Manual

FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 MECHANICAL/ELECTRICAL
98.04.24
1174SBM0907A
9-7.

Lens Movement

The Lens is moved by the Lens Drive Cable which is driven by the Lens Motor (stepping
motor). The motor drive pulses sent from the Motor Drive Board drive the Lens Motor to
move the Lens a given distance, corresponding to the zoom ratio, from the reference posi-
tion determined by the Lens Reference Position Sensor.
There is a fixed-type Lens Aperture Cover provided at the rear of the Lens (on the 4th Mir-
ror end). It limits the amount of light striking the surface of the PC Drum.
Shaft
Lens
Control Signal
M6 PWB-A PJ16A-1B
Control Signal
PC90 PWB-A PJ22A-8
Lens Reference Position Sensor PC90
Lens Base Bracket
Spring
Lens Drive Cable
Lens Motor M6
Lens Aperture Cover
Energized Deenergized WIRING DIAGRAM
L
Blocked Unblocked
L
M-27
Lens
Lens Aper-
ture Cover
Cam
1151M023AA
1149M010AA
H 8-B/8-F
WIRING DIAGRAM
H 12-B