![background image](http://html.mh-extra.com/html/lg/du-52sz61d/du-52sz61d_service-manual_217896009.webp)
- 9 -
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>
Summary of Contents for DU-52SZ61D
Page 21: ... 21 PRINTED CIRCUIT BOARD MAIN TOP ...
Page 22: ... 22 PRINTED CIRCUIT BOARD MAIN BOTTOM ...
Page 23: ... 23 PRINTED CIRCUIT BOARD TUNER TOP ...
Page 24: ... 24 PRINTED CIRCUIT BOARD TUNER BOTTOM ...
Page 25: ... 25 PRINTED CIRCUIT BOARD DIGITAL TOP ...
Page 26: ... 26 PRINTED CIRCUIT BOARD DIGITAL BOTTOM ...
Page 27: ... 27 PRINTED CIRCUIT BOARD DRIVER TOP DRIVER BOTTOM ...
Page 28: ... 28 PRINTED CIRCUIT BOARD SMPS LINE FILTER ...
Page 30: ... 30 PRINTED CIRCUIT BOARD LED TOP LED BOTTOM COMPONENT TOP COMPONENT BOTTOM ...
Page 31: ... 31 BLOCK DIAGRAM ...
Page 50: ......
Page 51: ......
Page 52: ......
Page 53: ......
Page 54: ......
Page 55: ......