NEC NC1600C Service Manual page 202

ADJUSTMENTS AND INSPECTIONS ATTRIBUTABLE TO THE REPLECEMENT OF ELECTRICAL AND OPTICAL PARTS
Lens Mount Adjustments
1. Adjustment of lens shift limit
No adjustment items required
2. Adjustment of focus limit
No adjustment items required
3. Adjustment of lens mount
1) Let the lens focus gear coincide with the zoom gear marking (for 4 meters).
2) Remove the lock plate (2 pcs.).
3) Adjust the vertical focus balance in the crosshatch screen.
• Turn the cam shown at top left and move the vertical focus point toward the front by the same distance
from the screen. Then, lock the point with the screw in the cam.
• Turn the bottom-left cam to eliminate a gap and lock the cam with the screw in the cam.
• The cam on the right side should be adjusted during fine adjustments. (The adjusting method is the
same as that for the left side cam. However, the turning direction is counterclockwise and reverse as
that for locking. Make sure not to confuse it.)
• If the lower focus is located toward the front, for example, the mount should be positioned to face
upwards. (In such a case, the screen is moved downwards.)
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