Purity & Convergence adjustment | LG Electronics 29FS2AMB/ANX

12) Download the file with ‘OK’ button.

7. 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.

CPT Assembling		As preparatory operations before
CPT Assembling		As preparatory operations before
		assembling CPT, wind cotton Tape for
		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.

13) Check download process(about 30~40 sec.).

4. DVCO Adjustment

1) This adjustment applies to the frame assembly unit

adjustment.

2) This adjustment is to adjust the crystal oscillator frequency of

VCTP IC and is done after receiving the PAL B/G digital

pattern signal.

3) If you press the ADJ button to enter the SCREEN mode,

DVCO adjustment is automatically done.

(T/X may not operate properly during DVC0 adjustment.)

Assembling DY to

CPT

HEAT RUN

Degaussing

STC Pre-Adjustment

PURITY Adjustment

DY Fixing

SCREEN Voltage adj.

W/B Fixing

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.

5. Temporary screen voltage adjustment

1) This adjustment applies to the frame assembly unit

adjustment.

2) Enter Screen Mode with ADJ button. Turn the screen volume

to disappear horizontal line.

FOCUS not yet ADJ.

STC not yet ADJ.

DYC not yet ADJ.

6. Focus Adjustment

6-1. Preliminary steps

Receive the PAL-B/G 07ch(Cross hatch pattern, <Fig 6>) and Set the picture mode to “STANDARD”.

6-2. Adjustment

1)Adjust the lower 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.

<Fig. 1>

7-1. 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.

7-2. 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.

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