Illuminator Phenomenon Adjustment; Up/Down Adjustment; Full White Lighting System Adjustment; Uv Glue Application Areas And Height - LG PF1500 Service Manual

2) Rotate screw (B) towards point B and check the point
where the light at the bottom starts to fade away.
(Fig. 4-1-5) Up/Down Adjustment
3) Rotate screw (B) towards point C so that the top and
bottom light margins are equal with consideration for
both the points where the light at the top and bottom
starts to fade away.
(Fig. 4-1-6) Up/Down Adjustment

4.2. Illuminator Phenomenon Adjustment

Adjustment Screw Rotation
Part
Left/Right Clockwise
Adjustment (Tightening
Screw A direction)
Counterclockwise
(Loosening
direction)
Left/Right Clockwise
Adjustment (Tightening
Screw B direction)
Counterclockwise
(Loosening
direction)
(6) Apply 0.1 g of colorless UV glue to each application area.
(7) Project a full black screen and look for any light leakage.
Screen Status
Initial Status After Adjustment
- 6 -
Step1
(Fig. 4-1-7) Full White Lighting System Adjustment
(See the application areas in Fig. 4-1-8)
(Fig. 4-1-8) UV Glue Application Areas and Height
* Be sure to flatten out the glue, so it does not protrude
beyond the side rib.
First the light on the left fades away,
then the light at the bottom also
begins to fade away slowly.
First the light on the right fades away,
then the light at the top also begins to
fade away slowly.
As the light at the bottom fades away,
the light on the right begins to fade
away slowly.
As the light at the top fades away, the
light on the left begins to fade away
slowly.
Step2
Adjustment Description