LG Electronics RT-29FB50RB Safety Precautions, Test Equipment required, Dvco Adjustment

ADJUSTMENT INSTRUCTIONS

1.Safety Precautions

1.It is safe to adjust after using insulating transformer between the power supply line and chassis input to prevent the risk of electric shock and protect the instrument.

2.Never disconnect leads while the TV receiver is on.

3.Don't short any portion of circuits while power is on.

4.The adjustment must be done by the correct appliances.

5.Unless otherwise noted, set the line voltage to 230Vac!10%, 50Hz.

6.The adjustment of TVshould be performed after warming up for 15 minutes.

2.Test Equipment required

1.RF signal generator (with pattern generator)

2.DC Power Supply

3.Multimeter (volt meter)

4.Oscilloscope

5.Color analyzer

3.DVCO Adjustment

1)This is for adjustment of VCT38XX,crystal oscillator frequency after receiving a company Digital pattern.(PAL:EU05CH,NTSC:13CH)

2)When entering adjustment mode by pressing IN-START button,DVCO adjustment is operating automatically.

(T/X doesn’t operating occassionally during DVCO adjustment.)

4.Focus Adjustment

4-1. Preparation for Adjustment

Tune the TV set to receive a digital pattern.

4-2. Adjustment Method

1)Single Focus CPT

Adjust the upper Focus volume of FBT for the best focus of horizontal line A,vertical line B.

2)Double Focus CPT

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.

A B

5. Screen Voltage & White Balance Adjustment

5-1. Adjustment of screen manually (Using ADJ.Remote Control)

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 Sreen Volume of FBT to change luminance of White signal center as shown below.(Deviation ! 1FL)

4)Press the EXIT button (Like TV/AV) to exit SVC mode.

CPT & INCH	Luminance(Manual)	Note
29” FLAT	6!1FL	Single Focus
25” FLAT	8!1FL
29” NORMAL	5!1FL
25” NORMAL	6!1FL
28” NORMAL	8!1FL

5-2. Adjustment of white balance manually(LIne-SVC 1)

1)Tune the TV set to receive an 100% white pattern.

2)Adjust LOW LIght status of CUT R,CUT B at CUT G:50.

3)Adjust HIGH LIght status of WDR R,WDR B at WDR G:380.

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

White Balance Color analyzer

Menu	EU	N-EU
X	288	268
Y	295	273
Color Temperature	9000oK	13000oK
White Balance Initial Data
Menu	Range	DATA
CUR R	0 ~ 511	50
CUR G	0 ~ 511	50
CUR B	0 ~ 511	50
WDR R	0 ~ 511	380
WDR G	0 ~ 511	380
WDR B	0 ~ 511	380

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 changes to SVC mode and screen displays SVC.)

Fig. 1

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