NEC VT440 Service Manual page 68

1
1-3-2. Vertical shadow adjustment for B (when the shadow color is yellow)
Replace the RL2 vertical adjusting screw. (Part name: Nylock screw (HLSS4*6), Part No.:
24N04751)
2
Then, follow the working procedures below by the use of a ball driver (opposite side 2.0mm).
Sufficiently loosen the RL2 vertical fixing screw (Part name: special screw (PL-HM2.5*6), Part
3
No.: 12851741) (in 1 position).
Loosen the RL2 horizontal fixing screw by one turn (Part name: special screw (PL-HM2.5*6),
4
Part No.: 12851741) (in 1 position).
Turn the RL2 vertical adjusting screw to eliminate the vertical shadow (yellow) from the pro-
5
jected screen.
Fix the RL2 horizontal fixing screw (in 1 position).
The fixing torque is 3.5 ± 0.5kgf·cm.
6
Fix the RL2 vertical fixing screw (in 1 position).
The fixing torque is 3.5 ± 0.5kgf·cm.
1
1-3-3. Horizontal shadow adjustment for G (when the shadow color is magenta or blue)
2
Loosen the FL horizontal fixing screws by one turn (in 1 position).
Move the FL to the right and left by hand, in order to eliminate the horizontal shadow (magenta
3
and blue) from the projected screen.
Fix the FL horizontal fixing screws (in 2 positions).
The fixing torque is 3.5 ± 0.5kgf·cm.
1
1-3-4. Horizontal shadow adjustment for R (when the shadow color is cyan)
Loosen the Mirror 1 fixing screw (Part name: PL-CPIMS2.5*6*15BF, Part No.: 910E2511) by 0.5
2
turns (in 1 position).
Using a minus screwdriver, turn and move the Mirror 1 to eliminate the horizontal shadow (cyan)
3
from the projected screen.
Fix the Mirror 1 fixing screw (in 1 position).
The fixing torque is 3.5 ± 0.5kgf·cm.
1
1-3-5. Horizontal shadow adjustment for B (when the shadow color is yellow)
2
Loosen the RL2 horizontal fixing screw by one turn (in 1 position).
Move the RL2 to the right and left by hand, in order to eliminate the horizontal shadow (yellow)
3
from the projected screen.
Fix the RL2 horizontal fixing screw (in 1 position).
The fixing torque is 3.5 ± 0.5kgf·cm.
METHOD OF ADJUSTMENTS
5-21