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

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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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Contents Color TV Contents Important Safety Notice Safety PrecautionsVision if SpecificationsPower Remote control handsetWith Teletext / PIP Number ButtonsBattery installation 6 3 RF/RT-25/29CA40 seriesCF/CT-25/29M30 series CF/CT-25/29Q40 seriesImportant note Chassis Assy Removal Disassembly InstructionsDvco Adjustment Safety PrecautionsFocus Adjustment Screen Voltage & White Balance AdjustmentPreparation for Deflection Adjustment Deflection Data Adjustment Line SVC-2N50Hz W50Hz Z50Hz N50Hz W50Hz Z50Hz N60Hz W60Hz Z60Hz50Hz 60Hz Picture Setting Data Line SVC-3 Option Adjustment OPTION-1,2, 3,TeletextSVC Data & PSM,SSM Data Menu Range 25/29 LG Flat 29 S/S-Flat 25 FST 28 FST 29 FSTOption 3 Function Option 1 FunctionOption 2 Function Sound PRE-SCALEROption Code Funtion Option 4 FunctionOption Code Funtion WEST-EU Block Diagram CathodeTilt ST-BY RF- Stereo Trouble ShootingNo Raster No Picture / No Sound Page Exploded View Exploded View Parts List Replacement Parts List DiodeTransistor Capacitor NP0 TS ECQ-V1H334JL30CQZVBK002C 330UF SLT 450V M Vnsn BulkCoil & Transformer ConnectorCONNECTOR,2.36PAI 1P . K/M Auto CONNECTOR,2.5MM 3P GIL-G LG Cable SResistor 0RMZVBK002D 0RKZVTA001K0RKZVTA001C Accessories SwitchFilter & Crystal Miscellaneous2002.03.25 3854VA0098A-S2/2 Printed Circuit BoardSVC. Sheet