LG DU-52SZ61D, Руководство по обслуживанию

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ADJUSTMENT INSTRUCTIONS
5. Adjusting the Optical Engine
(1) After placing the optical engine on the JIG, adjust
illuminator by adjuting the A, B, and C as shown <Fig. 4>.
1) Screen change when adjusting screw A
Tighten the screw: Upper/right illuminator are out of joint
Loosen the screw: Lower/left illuminator are out of joint
2) Screen change when adjusting screw B
Tighten the screw: Lower illuminator is out of joint
Loosen the screw: Upper illuminator is out of joint
3) Screen change when adjusting screw C
Tighten the screw: Upper/left illuminator are out of joint
Loosen the screw: Lower/right illuminator are out of joint
Check the spot (phenomenon such as Light tunnel exit) on the
edge of the white screen as shown <Fig. 5>.
(2) After adjusting the illuminator, adjust the focus by using the
focus adjustment screw of projection lens. After adjusting,
fasten the screw tighty and secure with sealer.
[
Note: The focus check point is not the screen center but the
upper/lower screen.
1) <Fig. 7> shows the pattern for focus adjustment
2) Adjust the 4 green ellipse so that all are in equal focus.
3) If you can’t check the DMD cell border at red center
position after adjustment, regard as NG.
4) <Fig. 8> shows the magnified pattern for checking the
focus adjustment
<Fig. 5>
<Fig. 6>
<Fig. 7>
<Fig. 8>
A
B
C
<Fig. 4>