Pentax 645 - CAMERA MAINTENANCE AND SPECIFICATIONS; INTERCHANGING FOCUSING SCREENS

INTERCHANGING FOCUSING SCREENS
To Interchange the focusing screen (F. S.), it will be
necessary to first remove the lens from the camera
body and turn off the main switch.
1. As seen in the photo, firmly hold the camera
with the lens mount facing up, and slide the
focusing screen release button in the direction of
the arrow, using the tweezers supplied with the
new focusing screen set,
2. The focusing screen will release together with
the retaining frame. The left lever located within
the lens mount should be held down by
depressing the preview lever. Remove the
focusing screen from the frame with the same
tweezers, and fit it into the groove in the case
of the focusing screen to be replaced.
3. C arefully place the new screen on the frame
using the tweezers provided while depressing the
preview lever. Push the frame up utilizing the
other end of the tweezers as illustrated, until it
snaps into position.
The focusing screens are made out of a special
optical plastic; thus, careful handling is essential.
To clean, use only a blower to blow away the dust.
It should be handled only with the exclusive
tweezers, held by the edges as illustrated.
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