Screen Voltage Adjustment; White Balance Adjustment - LG 21FS4RLX Service Manual

(3) Widen two tabs of 4pole Magnet with equal angles and
accord red,blue vertical lines at the center of screen.
(4) With keeping angle of "c.clause",rotate tab and accord
red/blue,green vertical lines at the center of screen.
(5) Widen two tabs of 6pole Magnet with equal angles and
accord red,bllue vertical lines at the center of screen.
(6) With keeping angle of "e.clause",repeat the adjustment
from c to e keeping in mind the movement of
red,blue,green when the horizontal lines are twisted.
(7) Move the 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.

5. Screen voltage adjustment

SCREEN manual adjust method(Used the remote controller)
(1) RF Mode,input the PAL or SECAM(NTSC)singal,every
channel is OK.
(2) First LINE SVC MODE(IN-START KEY) and push the ADJ
KEY change to the SCREEN adjustment MODE.
(3) Adjust the SCREEN VOL of the FBT,then TV picture will
be have a horizontal line,manual adjust the FBT SCREEN
VOL,when the horizontal line just disappear is OK
(Press the TV/AV button to exit SVC mode)

6. White balance adjustment

(1) Receive 100% white pattern.
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(2) From the initial data,adjust BLO-R(R CUT),BLO-G(G CUT)
keep X,Y coordinate settle for the below list,adjust the
LOW LIGHT(4.5FL).
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(3) From the initial data:BG(B-DRIVE) is 32,adjust RG(R-
DRIVE),GG(G-DRIVE) keep X,Y coordinate settle for the
below list,adjust the HIGH LIGHT(35FL).
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HIGH LIGHT,LOW LIGHT adjust reiterative. ? ?
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? ' 6 X e ? * @ ? e W 2 ( ? f ? ? V ' ) X ? ? V ' ? ? W & ( Y ? f ?
? V ' ) X ? ? W & ( Y ? g ? V ' ) X f W & ( Y g ?
W - X ? ? V ' @ @ ( Y ? ? W - X f ? V ' ) K O & ( Y h ?
& @ ) ? e ? @ @ ? e ? & @ ) f ? ? W & @ @ ) X ? h ?
W & ( M I ' ) X h ?
W & ( Y f V ' ) X g ? ? W & ( Y ? ? V ' ) X ? g ?
? W & ( Y ? ? W & ? ? V ' ) X ? f ? ? & 0 Y e ? * @ ? e V 4 ) ? f ?
? V ' ? h e ? ? ?
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? ? W/B adjust initial data maybe difference by different
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? ' 6 X e ? * @ ? e W 2 ( ? f ? ? V ' ) X ? ? V ' ? ? W & ( Y ? f ?
V ' ) X f W & ( Y g ? ? V ' ) X ? ? W & ( Y ? g ?
W - X ? ? V ' @ @ ( Y ? ? W - X f ? V ' ) K O & ( Y h ?
& @ ) ? e ? @ @ ? e ? & @ ) f ? ? W & @ @ ) X ? h ?
? W & ( Y ? ? V ' ) X ? g ? W & ( M I ' ) X h ?
W & ( Y f V ' ) X g ?
? W & ( Y ? ? W & ? ? V ' ) X ? f ? ? & 0 Y e ? * @ ? e V 4 ) ? f ?
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model,so please refer to the model adjust TABLE.
<Table 1> White Balance Coordinate(By market)
Item
X
Y
Chroma
<Table 2> White Balance Initial Data
LOW LIGHT BLO-R(R CUT)
BLO-G(G CUT)
BLO-B(B CUT)
HIGH LIGHT RG(R DRIVE)
GG(G DRIVE)
BG (B DRIVE)
EU N-EU
288
268
295 273
9000 13000
Menu Menu Range
PAL
0 ~ 63 32
0 ~ 63 32
0 ~ 63 32
0 ~ 63 32
0 ~ 63 32
0 ~ 63 32
<Table 3> White Balance Initial Data
1. IC PARAMETER
VCD IC
EP_ROM
2. White balance IIC Parameter(Address)
Program Win31_wb
Vcd Slave
Program Win31_wb TWB
Sub Add
Start Bit
Stop Bit
Offset
Polarity
EP_Rom_S
Speed/ Plus
7. Deflection setting Data Adjustment
7.1 Adjustment preparation
(1) TV set to receive an Digital pattern(PAL:E5ch.,NTSC: US-
12).
(2) Deflection data setting used remote.
(3) press the LINE SVC MODE(IN-START KEY) into
SERVICE MENU,Choice SERVICE2 to adjustment mode.
(4) Press CH+,CH- KEY chooice adjust item.
(5) Press VOL+,VOL - KEY increase or decrease DATA.
7.2 Adjustment
(1) First,adjust deflection at 50Hz,of PAL signal.
then,adjust deflection at 60Hz, of NTSC signal.
(2) Korea Model only used the N60Hz,adjustment .
Adjust vertical inclination of screen.
(3) Central or South America Model first N60Hz adjustment
and then N50(PAL-N) adjustment.
(4) when finish the adjustment and press"ENTER" KEY,save
data andexit adjustment Mode.
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Deflection adjustment small item ? ?
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? V ' ) X ? ? V ' ? ? W & ( Y ? f ? ? ' 6 X e ? * @ ? e W 2 ( ? f ?
V ' ) X f W & ( Y g ?
? V ' ) X ? ? W & ( Y ? g ? V ' ) K O & ( Y h ?
& @ ) ? e ? @ @ ? e ? & @ ) f ? W - X ? ? V ' @ @ ( Y ? ? W - X f ?
W & ( M I ' ) X h ? ? W & @ @ ) X ? h ?
? W & ( Y ? ? V ' ) X ? g ? W & ( Y f V ' ) X g ?
? W & ( Y ? ? W & ? ? V ' ) X ? f ? ? & 0 Y e ? * @ ? e V 4 ) ? f ?
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DATA
(1) V SLOPE
NTSC
The cutting part(below) of picture transfer to Blanking.
32
Adjust the geometric vertical center of the CPT is in accord
lower blanking.
32
32
(2) VS (Vertical Shift)
32
Adjust so that the horizontal center line of a digital circle
pattern is in accord with geometric horizontal center of the
32
CPT.
32
- 9 -
Name Maker Algorithm
0
TWB Win31_wb TWB
8A Eeprom_Slave
B(R)_Amp B(R)_Cut G_Amp
Win31_wb TWB Win31_wb
20 17
5 5
0 0
0 0
1 1
36 33
2 2
0 0 0
Speed Delay
1 30
A0
G_Cut
TWB Win31_wb TWB
21 18
5 5
0 0
0 0
0 0
37 34
2 2