LG 52SZ8D, Service Manual

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ADJUSTMENT INSTRUCTIONS
1. Application Object
These instructions apply to the DLP Projection TV (Chassis:
NB-05ED).
2. Notes
(1) Because this is not a hot chassis,it is not necessary to use
an isolation transformer. However, the use of an insolation
transformer will help protect test equipment.
(2) The adjustments must be performed in the correct
sequence.
(3) The adjustments must be performed in the condition of
25±5°C of temperature and 65±10% of relative humidity if
there is no other specific designation.
(4) The input voltage of the receiver must remain AC 120V,
60Hz.
(5) Unless stated otherwise, the set must be operated for at
least 5 minutes prior to adjustments.
The heat-run should be performed with a 100% white
pattern,but reception of a moving picture may also be
possible in unavoidable cases.
3. Composition of Adjustment Mode
(1) Adjustment modes are entered by pressing the ADJ key
on the Service Remote Control, after adjustments press
the ADJ key to exit.
(2) Initial Adjustment mode Menu is shown below. <Fig. 1>
(3) As shown <Fig. 1>, using the CH+ ( D ), CH- ( E ) keys to
select an item, press the ENTER or (
G
) keys to
enter the appropriate item and begin adjustment.
(4) Change the value of adjustment by using the (
G
),
volume -( F ) keys. To change adjustment item, use the
CH+ (
D
), CH- (
E
) keys in EZ ADJ Mode.
(5) Press the ADJ key to exit, after adjustments.
(6) Preparation for Adjustment
1) Connect the power to TV Set and set “Power on”.
2) Allow set to Heat-Run for at least 5 minitues before
adjusting.
4. Adjusting the Optical Engine
(1) After placing the optical engine on the JIG, adjust
illuminator by adjuting with automatic adjustment the B as
shown <Fig. 2>.
1) When adjust illuminator, search the scope does not fall
in illuminator and Tilt adjustment complete with
automation equipment in that scope.
2) After adjusting, A fix with Screw using automation
equipment.
(2) In order to move Optical system the Tilt is adjusted to
center of the screen, adjust untill the image is level
A(Projection Lens) as shown <Fig. 3> .
<Fig. 1> Adjustment Mode OSD
A
B
<Fig. 2> HD3/HD4 Optical Engine
A
<Fig. 3> HD3/HD4 Optical Engine Projection Lens