LG Electronics 29FX6ALX-ZG service manual Screen voltage adjustment, White balance adjustment

(5)Open angle of the two tab of 6 pole magnet by isogonic 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 fixing DY.

5.Screen voltage adjustment

(1)Receive the PAL or SECAM(NTSC) signal into RF mode (regardless of channel).

(2)If you press the “ADJ”button in LINE SVC mode(IN-START button),the LINE SVC mode changes to screen adjustment mode.

(3)Turn the Screen Volume of FBT to change luminance of White signal center as shown below.

(4)Press the ADJ button to exit SVC mode.

6.White balance adjustment

NOTE : When adjusting white balance automatically,connect the adjustment JIG in SVC mode.(When pressing IN- START,MUTE button on remote control for adjustment orderly,it is changed to CPU OFF mode and screen is displayed to “CPU OFF”.)

(1)Receive 100% white pattern.

(2)Adjust LOW Light status(4.5FL) of CR(R CUT), CB(B CUT) at CG(G CUT:75) : 60.

(3)Adjust HIGH Light status(35FL) of WR(R DRIVE), WB(B DRIVE) at WG(G DRIVE:380) : 450.

(4)Repeat above step (2) and (3) for the best condition each status of High Light and Low Light.

<Table 1> White Balance Color analyzer

Menu				EU				N-EU
X			288				268
Y			295				273
Color Temperature				9000oK			13000oK
<Table 2> White Balance Initial Data
				Menu	Range				DATA
LOW LIGHT		BLO-R(R CUT)			0 ~ 63					32
		BLO-G(G CUT)			0 ~ 63					32
		BLO-B(B CUT)			0 ~ 63					FIX
HIGH LIGHT		RG(R DRIVE)			0 ~ 63					32
		GG(G DRIVE)			0 ~ 63					32
		BG (B DRIVE)			0 ~ 63					32
<Table 3> White Balance Initial Data
1. IC
	Name			Maker		Algorithm
VCD IC
					0	0		0			0
EP_ROM

2. White balance IIC Parameter(Address)

Program	Win31_wb			TWB				Win31_wb	TWB		Speed	Delay
Vcd Slave				8A		Eeprom_Slave			A0		1	30
			B(R)_Amp			B(R)_Cut		G_Amp			G_Cut
Program		Win31_wb		TWB	Win31_wb		TWB	Win31_wb	TWB		Win31_wb	TWB
Sub Add				20			17		21			18
Start Bit				5			5		5			5
Stop Bit				0			0		0			0
Offset				0			0		2			2
Polarity				1			1		0			0
EP_Rom_S				36			33		37			34
Speed/ Plus			2		2			2		2

7. Deflection setting Data Adjustment

7.1Adjustment preparation

(1)Tune the TV set to receive an Digital pattern(EU05CH).

(2)Deflection setting data adjustment is operate by SVC

communicator.

(3)Enter the deflection mode by selection SERVICE2 key on SERVICE MENU after enter the adjustment mode by pressing LINE SVC MODE(IN-START KEY).

(4)Use the CH D ,E key to select adjustment item.

(5)Use the VOL F ,G key to increase/decrease data.

7.2Adjustment

<Note>

-When adjusting a deflection,adjust N50Hz of PAL signal first and adjust a deflection data at N60Hz(NTSC), Z60Hz, N50Hz, W50Hz, Z50Hz.

-After finishing deflection adjustment, press the ENTER button to enter or exit SVC mode.

(1)H SHIFT

Adjust so that the geometric horizontal center line is in accord with horizontal center line of CPT.

(2) H PARALLEL

Adjust vertical inclination of screen.

(3) H BOW

After finishing Cushion adjustment, adjust curved rate of top & bottom corner to be equal.

(4) V LINEAR

Adjust the top & bottom size of inner circle to be equal.

(5) V SCROLL

Adjust so that the geometric vertical center line is in accord with vertical center line of CPT.

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