Focus Adjustment - Mitsubishi Electric DLP PH50 series Manual

2.3. Focus adjustment

This adjustment is normally unnecessary.
You can adjust the lens focus when it is soft.
[Procedure]
1. Display the crosshatch pattern by pressing [TEST] button twice.
2. To access the optical unit, open the screen (chapter 1.2.7.1, on page 21) in
rear panels in R e a
R e a
3. X G A R e a r : Remove the band that fastens the accordion hose to the lens.
X G A R e a r
4. X X G G A A : Loosen the lens hood fixing screw.
5. X G A : Loosen the two focus lock screws.
X G A
S X G A + : Loosen the two lens fixing screws and the ring fixing screw.
S X G A +
Lens fixing screw
Focus ring
6. Turn the focus ring to focus on the center of the screen.
7. X G A : Turn the lens hood to align the position not to shade the image.
X G A
8. Turn the focus ring to adjust the focus with balance on the whole screen.
9. X X G G A A : Turn the lens hood to align the position not to shade the image again.
10. Fix the focus lock screws (suggested torque: 0.38Nm
the lens.
11. X X G G A A : F ix the lens hood fixing screw (suggested torque: 0.15Nm
12. X X G G A A R R e e a a r r : Put back the accordion hose and tighten the fixing band.
13. Put back the rear panels or the screen unit.
PH50, XL50, XL21 series Set-up and Installation Manual
r .
r
Ring fixing screw
For S X G A +
S X G A +
Focus ring
+/-0.03
). Be careful not to stress too much on
+/-0.02
82
F r o n t or open the
F r o n t
Lens hood fixing screw
Focus lock screw
For X G A
X G A
).