LG 21FU6RLX Page 6 Service Manual Download

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g. Move DY up, down, left, right and make the convergence to be

optimal condition and stick rubber wedge to CPT so that the
DY not to move.

3.3 Screen Voltage &WHITE BALANCE Adjustment

3.3.1 Screen Voltage Adjustment.

a. Receive the NTSC or PAL-M/N signal into RF mode

( regardless of channel.)

b. If you press IN-START -> ADJUST , the LINE SVC mode

changes to screen adjustment mode.

c. Turn the Screen volume of FBT until the horizontal line is no

longer seen and then stop.

d. Press the EXIT button to exit Screen Adjust mode.

3.3.2 White Balance Adjustment

Prior to this adjustment, screen voltage adjustment must be finished.
1). Necessary Instrument

(a). White Pattern Generator (Can generate Low/High Light pattern)
(b). White Balance meter( CRT color Analyzer,CA-100)
(c). Factory Remote controller

2) Preliminary steps

(a). Tune the TV set to receive an 100% white pattern.
(b). Perform screen adjustment first.

3) Adjustment

(a). Enter into adjustment mode by "INSTART" key and

select SERVICE1 mode.

(b). Adjust the item with CH+/- Key.
(c). Adjust the data with VOL+/- Key.
(d). Adjustment Procedure

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Adjust"CONTRAST"and "BRIGHT" so that the bright level

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Select GG(G DRIVE) to adjust Y coordinate in High Light

and select RG(R DRIVE) to adjust X coordinate so that
the color coordinates in High Light match the vaInues in

Table below.

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Adjust 'CONTRAST

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Select BLO-G(G CUT) to adjust Y coordinate in Low Light
and select BLO-R(R CUT) to adjust X coordinate so that
the color coordinate in Low light match the values in
Table below.

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Repeat

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until the color coordinates in High and Low

color satisfies the Table.

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Check the adjusted color coordinates with the white

balance meter

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. Store the W/B adjustment data in EEPROM by using

ENTER button before EXIT.

[Table 3] W/B Automatic Instrument Table

CW62E WHITE BALANCE IIC PARAMETER

1. IC

2.White balance IIC Parameter (Address)

3.Color coordinate

3.4. Deflection Adjustment

Adjustment should be follow below sequence..

3.4.1. Preparation.

a. Tune the TV set to receive a Digital pattern (PAL : EU 05CH)
b. Use the adjust Remoconto set the Deflection Data.
c. At adjustment mode (IN-START button on remote control of

adjustment), changed to SERVICE 2 mode to adjust the
deflection.

d. Press Channel

button for desirous function adjustment..

e. Press Volume

button to adjust the data.

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If Line is not for LG TV SET, receive the avalible Pattern to adjust

Deflection.(Ex : Cros Circle)

3.4.2. Adjustment.

1. Deflection Data Adjustment should be follow below sequence.
a. Adjust at N50HZ(PAL) => N60Hz(NTSC) => Z60Hz => N50HZ

=> W50Hz => Z50Hz

b. This sequence is only for specific model which as a ARC

function.

Note : If adjust at N60Hz, every data will be changed to revised

data automatically compared with N60Hz

2. In case of NTSC only model, adjust deflection at 60Hz of NTSC

signal.

Program

Sub Add

Start Bit

Stop Bit

Offset

Polarity

EP_Rom_S

B(R)_Amp

Win31_wb TWB

B(R)_Cut

Win31_wb TWB

G_Amp

Win31_wb

TWB

- 6 -

Item

N-EU

Chroma

288

295

9000°C

268

273

13000°C

<Table 1> White Balance Coordinates
(Warning: Color coordinates is different for each Market.)
Tolerance Range : Adjust within ±3 for each X,Y coordinates

BLO-R(R CUT)

BLO-G(G CUT)

RG(R DRIVE)

GG(G DRIVE)

BG (B DRIVE)

LOW LIGHT

HIGH LIGHT

0 ~ 63

Range

Refer

DATA

<Table 2> White Balance Initial Data