LG Electronics 29FX6ALX-ZG Application Object, Focus adjustment, Purity & Convergence adjustment

ADJUSTMENT INSTRUCTIONS

1. Application Object

These instructions are applied to all of the color TV, CW62A.

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.

	As preparatory operations before
CPT Assembling
	assembling CPT, wind cotton Tape for
	protecting to CPT NECK and DY, CPT
	connection parts. At this moment, end
	of tape should be over-lapped and
	wound in direct route to the NECK.

(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 rating
	voltage in adjusting.
(5)	The receiver must be operated for about 15 minutes prior
	to the adjustment.
(6)	Signal: Received, the standard color signal.(65dB±1dB uV)
	LG standard signal means the digital pattern
	(PAL_EU 05CH).
3. Focus adjustment
(1)	Receive the Cross-Hatch Pattern(Fig 1).
(2)	Set the picture condition on “DYNAMIC(CLEAR)” mode.
(3) Adjust the Focus volume of FBT for the best focus of (A) &
	(B).

AB

Assembling DY to

CPT

HEAT RUN

Degaussing

STC Pre-Adjustment

PURITY Adjustment

DY Fixing

SCREEN Voltage adj.

W/B Fixing

FOCUS not yet ADJ.

STC not yet ADJ.

DYC not yet ADJ.

Fix the Magnet to the position as shown picture below. Be careful not to make CPT neck shadow while

adjusting DY.

Convergence Magnet			6Pole 4	2
	◀
		◀
	15 ~ 20mm

Let the screen Standard condition. Operate Heat-Run at least 15

minutes.

Torque is to be 9-11 kg f.cm when fixing DY.

<Fig 1. Cross-Hatch Pattern(E-7CH)>

4. Purity & Convergence adjustment

Adjustment should be operated when using the CPT(without ITC from CPT manufacturing place)

This adjustment must be done in the order of the following flowchart.

4.1.Color purity adjustment

(1)It makes CPT or CABINET enough to demagnetization.

(2)Receive the signal of red raster.

(3)Loosen fixed screw of DY and closely to CPT funnel part.

(4)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.

(5)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.)

(6)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 BACK RASTER is black.

(2)Adjust brightness and luminosity till dot appear 9 ~12.

(3)Open angle of the two tab of 4 pole MAGNET by isogonic 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.

- 8 -