Adjustment Instruction; Application Object; Composition Of Adjustment Mode; Folding Mirror Adjustment - LG PF1500 Service Manual

1. Application Object

This instruction is for the application to the DLP Projector
(Chassis: FM52A).
2. Notes
(1) The power source insulation of this DLP Projector is not
charging type and you may not use the transformer for
insulation. It is advised to use an insulation transform
between the power supply cable and power input of the set
to protect the test equipment.
(2) The adjustment must be performed under the correct
sequence. But, it can be changed within the error
boundary of performance, considering the mass
productivity.
(3) The adjustment must be performed in the circumstance of
25 °C ± 5 °C of temperature and 65 % ± 10 % of relative
humidity.
(4) For the adjustment, the receptor's input voltage shall be
maintained at 220 V, 60 Hz.
(5) The set must be on for 5 minutes prior to any adjustment.
After receiving possible 100 % White Pattern, it is ready for
adjustment. If it is inevitable, it can be regardless of the
signal.

3. Composition of Adjustment Mode

(1) Adjustment mode can be entered by pressing ADJ key of
the adjustment remote controller, and may exit by pressing
EXIT key after the adjustment.
(2) Preparation for adjustment.
1) Connect power to the Set, and make it Power On state.
2) Heat Run for at least 5 min. before the adjustment.
(3) Adjustment specification
1) Composition of adjustment mode
A. Turn on the power of the set with Power on key.
B. When the set is turned on, press the Power only key
to enter the power-only mode.
C. Select Default mode for input source.
D. Adjustment mode can be entered by pressing ADJ
key of the adjustment remote controller, and may exit
by pressing EXIT key after the adjustment.
E. Preparation for adjustment.
F. Connect power to the Set, and make it Power On
state.
G. Heat Run for at least 3 min. before the adjustment.

4. Folding Mirror Adjustment

(Fig. 4-1) Full Black Lighting System Adjustment

ADJUSTMENT INSTRUCTION

(B)Up/Down Adj. (A)Left/Right Adj.
4.1. Lighting System Adjustment Procedure
(1) Remove the cover from the engine.
(2) Make sure the optical engine is properly mounted correctly
in accordance with the reference position of the jig.
(3) After adjusting the screen size, using 40 inches as a
reference size, project a full white screen and then adjust
the focus.
(4) Left/right adjustment
1) Rotate screw (A) towards point A and check the point
where the light on the right starts to fade away.
(Fig. 4-1-1) Left/Right Adjustment
2) Rotate screw (A) towards point B and check the point
where the light on the left starts to fade away.
(Fig. 4-1-2) Left/Right Adjustment
3) Rotate screw (A) towards point C so that the left and
right light margins are equal with consideration for both
the points where the light on the left and right starts to
fade away.
(Fig. 4-1-3) Left/Right Adjustment
(5) Up/Down adjustment
1) Rotate screw (B) towards point A and check the point
where the light at the top starts to fade away.
(Fig. 4-1-4) Up/Down Adjustment
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