Panasonic PT-VX400U

-33-
White
c Condenser lens adjustment-2
1 Loosen 1 screw C on the condenser lens (OUT) base and insert a
slot screwdriver into the slots D and turn it to disappear the color
shading on the left and right of the screen as shown in Fig.4.
2 Tighten screw C to fix the condenser lens (OUT) unit.
Optical Adjustments
Slot D
C
Moving of Slot D
Fig.4