LG 29FX5RJ, Service Manual

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1. Application Object
These instructions are applied to all of the color TV, MC-036A.
2. Notes
(1) Because this is not a hot chassis, it is not necessary to use
an isolation transformer. However, the use of isolation
transformer will help protect test instrument.
(2) Adjustment must be done in the correct order.But the
adjustment can be changed by consideration of mass
production.
(3) The adjustment must be performed in the circumstance of
25±5°C of temperature and 65±10% of relative humidity if
there is no specific designation.
(4) The input AC voltage of the receiver must keep 220V±10%
in adjusting.
(5) The receiver must be operated for about 15 minutes prior
to the adjustment.
3. Focus adjustment
3-1. Preliminary steps
(1) Tune the TV set to receive a digital pattern.
(SVC mode: Automatically mode change the STANDARD
MODE)
3-2. Adjustment
(1) Adjust center focus volume of FBT for the best focus of
vertical line (B).
(2) Adjust the upper focus volume of FBT for the best focus of
area (A).
(3) Repeat above step 1) and 2) for the best overall focus.
4. Purity & Convergence adjustment
4-1. Color purity adjustment
(1) Magnetic room set to destination magnetic and horizontal
magnetic set to zero.
(2) It makes CPT or CABINET enough to demagnetization.
(3) Self-adjustment: Adjust by input of Green raster signal
Manual-adjustment: Receive the signal of red raster.
(RF: PG50Ch or A/V input: RED pattern)
(4) Loosen fixed screw of DY and closely to CPT funnel part.
(5) Check the center of screen that purity magnet of CPT by
crossing adjustment. At this time, 4 & 6 pole magnet is
located to magnet of nothing.
(6) Move the DY to make equal red on whole screen and it
does not to make the DY by fixed screw after check a
simple color of Red/Green/Blue and white raster whether
or not it is a pollution of color.
(At this time, take care raster of screen and DY must fixing
in the condition which maintains a horizontality.)
(7) Check the TV set by move direction.
4-2. Convergence adjustment
These adjustments can the best condition of focus after
finished purity adjustment.
(1) Receive the signal of cross hatch that color is black.
(2) Adjust brightness and luminosity till dot appear 9 ~12.
(3)Open angle of the two tab of 4 pole magnet by isotonic
angle and accord with vertical line of red and blue color in
the middle of screen.
(4)Maintain as angle of 3) and rotate the tab to accord with
vertical line of Red and Blue color in the middle of screen.
(5) Open angle of the two tab of 6 pole magnet by isotonic
angle and accord with vertical line of Red/Blue and Green.
(6) Maintain as angle of 5) and rotate the tab to accord with
horizontal line. In case of twisted horizontal line,repeat
adjustment of 3) ~ 5) remembering the movement of
Red/Green/Blue color.
(7) Move the DY to best condition of convergence and attach
the CPT to a rubber-chock for fixed DY.
4-3. Screen voltage adjustment
(1) Preliminary steps
1) Turn on the TV set.
2) This adjustment should be performed after warming up
for more than 15 minutes.
(2) Adjustment
1) Adjust in RF non-signal.
2) Press the ADJ key of SVC remote controller to make
horizontal line.
5. White balance adjustment
This adjustment should be performed after screen adjustment.
This adjustment set the self-adjustment rule.
5-1. Test Equipment
(1) Automatic White balance meter: Incase of self-adjustment
(2) White balance meter(CRT Color Analyzer, CA-100): 1 EA
(3) A SVC remote controller.
5-2. Preliminary steps
(1) Tune the TV set to receive an 100% white pattern.
(2) This adjustment should be performed after screen voltage
adjustment.
ADJUSTMENT INSTRUCTION