Adjustment Instruction - LG RD-JT91 Service Manual

1. Application Object
This instruction is for the application to the DLP Projector
(CHASSIS : RE-048A).
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.
(3) The adjustment must be performed in the circumstance of
25!5cC of temperature and 65!10% of relative humidity.
(4) The input voltage of the receiver must keep AC 110V,
60Hz during adjustment.
(5) The set must be on for 5 minutes prior to any adjustment.
After receiving possible 100% white pattern, it is operated
preliminarily.
3. Accessing the Adjustment Mode
(1) Pressing the instart key on the service remote will open or
close the service menu.
(2) As shown <Fig. 1>, use the (CH+ (
item press the ENTER or VOLUME key to enter the item
you wish to adjust.
1. Test Pattern
2. Optic Check
3. Temperature
4. RGB Gain/Off Set
5. Component Gain/Off Set
6. White Balance
7. CWI
8. Lamp Time Reset
9. White Peaking
10. PWM
<Fig.3> OSD of Adjustment Mode
(3) Press the Instart key to exit the service menu.
(4) Preparation for Adjustment
1) Power is connected in set to be power on.
2) Do heat run 5minutes.
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ADJUSTMENT INSTRUCTION

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4. Folding Mirror Adjustment
4-1. Before adjusting, check the position of
Folding MIrror
Check the position of Folding Mirror in the base of up /
down / left / right surface. (Fig. 4-1)
(1) Check the Lower Position
As shown <Fig. 4-1>, check the mirrors lower position in the
middle of the hole, located under the holder.
hole of the lower holder
<Fig.4-1> Check the Lower Position of Folding Mirror
(2) Check the Left / Right Position
After checking the lower position, as shown <Fig. 4-2>, fix the
sides so they are vertically aligned with the base surface.
base surface
<Fig.4-2> Check the Left / Right Position of Folding Mirror
Left and right
adjustment screw B
<Fig.4-3> Illuminator Adjustment Part by Folding Mirror
Top and bottom
adjustment screw A
Left and right
adjustment screw C