LG 52SZ8R Service Manual page 19

3) After adjusting the illuminator, adjust the focus by
using the focus adjustment screw of projection lens.
After adjusting, fasten the screw tightly and secure
with sealer <Fig 4>.
* Note: The focus check point is not the screen center but the
upper/ lower screen.
* The pattern When Focus adjustment
1) Come to Cross Hatch in the adjustment T/X Adj>Pattern.
2) Adjustment to the most adequate Focus being changed
Focus adjustment Knob.
3) Adjustment /Check for Focus of mark part to be same.
a. Focus : Center Best
b. Flare : 1.5pixel
4) After finishing adjustment, adjustment Knob is made to be Fix.
5. Check the CWI/ NDC adjustment
movement and Default data
(Base value --> CWI: 160, NDC: 12)
1) Required Test Equipment
: Remote control
2) Preparation for Adjustment
(1) Connect power and turn Power on.
(2) Using the Remote Control, enter from ADJ to CWI/ NDC.
(3) Check the Variable and base value(CWI:160, NDC:12)
6. Check the Actuator adjustment movement
and Default data
1) Required Test Equipment
: Remote control
2) Preparation for Adjustment
(1) Connect power and turn Power on.
(2) Using the Remote Control, enter from ADJ to Actuator_60.
(3) Check the Variable and base value ACT Gain and Phase
- Phase(Base value : 200)
- Gain(Base value : 60)
A. Inject the resilock
B. Ancor Screw
<Fig 4>
<Fig 5>
7. Caution for DMD(Digital Micro-mirror
Device)
1) Caution for DMD ESD
(1) You connect the grounding to prevent ESD (Electrostatic
Discharge) when handing the DMD.
(2) The worker have to wear wrist strap that connect to ground.
(3) Electric workshop and an electric conductor surface
connect to ground.
(4) Save the DMD after removement a static electricity.
Keep it at an exclusive case when moving it. When
grounding, open the case.
(5) Put on gloves that to prevent static electricity. If it's old,
replace it.
(6) The work is done at the electro static-free location. Attach the
tape or remove dust on the front or back pin of DMD glass.
2) Caution
(1) Keep the procedure and caution to prevent the screen
strange phenomenon. Don't make a scratch.
(2) When DMD stains with dust, polish the front and back DMD
with soft wiper. Then, polish the front and back DMD after
rotating 180 degree the DMD. If necessary, take a inspection.
(3) Don't clean the DMD with the high pressure. Because
the electric static and pollution influence to DMD.
* TI Reference : DMD Handling Specification, DMD Cleaning.
8. EDID Data Input
1) Required Test Equipment
(1) PC, S/W for writing DDC(S/W : EDID TESTER Ver. 2.5)
(2) A JIG for adjusting.
(3) Serial(9Pin or USB) to D-sub 15Pin cable, D-sub 15 Pin
cable. DVI to HDMI cable
2) Preparation for Adjustment & Setting of Device
(1) Set devices as above Fig 6 and turn the PC,JIG on.
(2) Put S/W for writing DDC (EDID data Write & Read) into
operation.
3) Sequence of Adjustment
<Fig 6. Composition diagram for EDID Data Input>
(1) Put the set on the table and turn the power on.
(2) Operate EDID Write command by pressing Function Key F8.
(3) When "OK" letter appear, completed the Write.
*EDID Check Sum
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DLP PJTV SET
( or digital board )
PC
JIG