Flange-back lock screw
If the pick-up surface is not correctly positioned with relation to the lens focal point, the picture will be out of
focus (in particular when using auto-iris power zoom lenses, sold separately). If that is the case, adjust the
flange-back position as described below.
Using a + screwdriver, loosen the flange-back lock screw (M2:+).
Set the zoom lens to the maximum telephoto position, set the focus using the focus ring on the lens.
Set the zoom lens to the maximum wide angle position, set the focus using the flange-back adjustment
Repeat steps 2 and 3, until the image stays in focus when changing from a telephoto shot to a wide angle
When the setting is complete, tighten the flange-back lock screw.
When flange-back lock screw is completely tighten it will protrude slightly as shown in the illustration (Fig. 1).
Do not tighten the screw further.