Operating 503 and Other V System Cameras 165
Attaching and Removing the 503 Winder
After removing the winding crank, lens, and carrying strap, place the winder over the wind-
ing mechanism with the strap lug in the winder’s mounting plate. Rotate it clockwise until it
clicks into position (see Figure 9-3). A faint sound after the motor is attached indicates that
the motor senses the camera status. The motor winds an uncocked camera automatically so
Figure 9-3 503CW motor operation. (2) Open the battery compartment by moving the lever
clockwise, insert the six batteries as shown in the battery holder. (3) After removing the lens,
attach the motor over the winding mechanism, with the strap lug in the motor’s mounting
plate. (4) Turn the motor clockwise. (5) To remove the motor, press the detaching lever and
turn the winder counterclockwise.