Hasselblad 503CW Instruction Manual page 26

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Changing the Fscusing Screen
1) Detach the magazine and viewfinder.
2) Push the two screen clips to the side into
their recesses.
3) Place your hand over the screen, and invert
the camera. The screen will now drop into
your hand.
4) Insert the replacement screen, ensuring that the
smooth flat side is uppermost and the
sharp-
edged corners down. Ensure that all four cor-
ners of the screen are positively seated on their
supports.
You need not return the screen latches. This is
done automatically when the viewfinder is
replaced.
Should the screen refuse to drop out by itself,
ensure that the camera is fully wound, remove
the lens and check that the mirror is in the down
position. Put a finger through the lens mount and
push gently on the screen from underneath,
preferably with a soft cloth between the screen
and the finger.
22
The ViewJinder System