LG HX300G, Service Manual

Page: 5 / 74

Copyright © 2010 LG Electronics Inc. All rights reserved.
Only for training and service purposes - 5 - LGE Internal Use Only
1. Application Object
This instruction is for the application to the DLP Projector
(Chassis: FM92A).
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) Select Default Mode for input source.
(2) The adjustment mode can be entered by pressing ADJ key
of the adjustment remote controller, and it also exits by
pressing EXIT key.
(3) Preparation for Adjustment
(4) Power is connected in set to be power on.
(5) Do heat run 5minutes.
4. Folding Mirror Adjustment
Tools : Cross Screw Driver, Glue
4-1. Illuminator Adjustment Sequence
After putting the optical engine on the jig, check whether the
mirror part is fixated vertically. At this time the screen size
should be based on 40”. With the screen in full white
condition, look at the change in screen and brightness of the
illuminator to make appropriate adjustments.
(1) Up / Down Adjustment and Verification of FEL Ghost
1) Turn the bottom adjustment screw B of the lighting
system clockwise, and verify the point where the bottom
light is first taken off.
2) While the lighting system is taken off, apply the method
of blocking the aperture (same as HS200 lighting
system adjustment method) to set just to bottom side
standard.
3) After it turned to the Black screen, verify if the bottom
part FEL Ghost II part is 4 lines or less, and then finish.
(2) Left and Right Adjustment
1) Turn the left/right adjustment screw A of the lighting
system counterclockwise, and verify the point where the
right side light is first taken off.
2) Turn the left/right adjustment screw of the lighting
system clockwise to adjust to the right side standard.
ADJUSTMENT INSTRUCTION
<Fig. 4-2> Illuminator Up / Down Adjustment Sequence
<Fig. 4-3> Illuminator Left/Right Adjustment Sequence
<Fig. 4-1> Lighting system adjustment part by lighting lens