LG 21FU7RL Service Manual page 8

8-3. Sub-Tint adjustment
This adjustment has to be done only if the picture has bad tint
otherwise, it can be omitted if the picture has good tint.
1) Receive LG standard pattern signal (SMPTE, 2CH)
2) Set the picture condition on "APC ON" (CLEAR) mode.
3) Press the "ADJ" key of the factory remote control three
times to enter to "SUB-TINT" adjustment mode.
4) Change the Sub-Tint data by pressing the VOL
key until the upper and lower CYAN color becomes same
color.
9. Deflection setting data adjustment
These adjustment will be done by automatic adjustment
Equipment.
For manual adjustment, it is also possible by the following
procedure.
9-1. Adjustment Preparation
1) Deflection setting data adjustment can be done only with
remote control.
2) Press "IN-START" key on factory remote control continuously
to enter to Deflection Adjustment mode.
D E
3) Press the CH , key to select adjustment item.
F G
4) Press the VOL , key to change the data.
9-2. Adjustment
1) Horizontal Position Adjustment
Select SVC02(H-POS) and adjust so that the left and right
vertical line are symmetrical as possible.
2) Vertical Position Adjustment
Select SVC02(V-POS) and adjust so that the horizontal
center line coincide with geometric horizontal center of the
CPT.
3) Vertical Size Adjustment
Select SVC02(VA) and adjust so that the middle circle of the
Digital Pattern(480NC, 13CH) coincide with the effective
screen of CPT.
9-3. Adjustment (21'' Superslim, Ultra S/S
Model)
1) Vertical Position Adjustment
Select SVC02(V-POS) and adjust so that the horizontal
center line coincide with geometric horizontal center of the
CPT.
2) Vertical linearity Adjustment
Select SVC02(V-LIN) and adjust so that the size of the upper
circle is alike with the one of the lower circle at LG standard
pattern (PAL: EU05CH, NTSC: 13CH)
3) Vertical Size Adjustment
Select SVC02(VA) and adjust so that the middle circle of the
Digital Pattern(PAL B/G 5CH) has 6~7mm gaps from the
effective screen of CPT
4) Horizontal Position Adjustment
Select SVC02(H-POS) and adjust so that the left and right
vertival line are symmetrical as possible.
5) Horizontal Size Adjustment
Select SVC02(EW WIDTH) and adjust so that the outer line of
the left and right and the remotest grid will correspond to the
effective boundary surface. (The remotest grid PAL: within
0~25%; NTSC: within 2.5~3.0 column)
6) Parabora Adjustment
Select SVC02(EW PARAB) and adjust so that the vertical line
of the remotest grid at the left or right side of the screen will
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Only for training and service purposes.
be parallel to the vertical line of the center of screen. (or the
remotest grid of CPT)
7) Trapezoidal Adjustment
Select SVC02(EW TRAPE) and adjust so that the width of
the upper part of screen is alike with the one of the lower part
of the screen.
8) EW UPCOR / LOCOR Adjustment
Select SVC02(EW C UPCOR, EW LOCOR) and adjust so
F G
, VOL
that the vertical line in the four corners become straight line.
9) BOW Adjustment
Select SVC02(HP BOW) and adjust so that the vertical line in
the four corners become straight line.
10. IIC BUS SUB Adjustment Data
Table
OSD
SUB-BRIGHTNESS
SUB-TINT
11. Auto Adjustment Preparation
Setting Table
SLave ADD
VCD
R DRIVE
Sub Add D
Start Bit 6
Stop Bit 0
Masking 0
Direction
1
EEPROM
8D
Sub Add
SpeedPlus
3
Step/Data
- 8 -
Range
0 ~ 100
-20 (R) ~ +20 (G)
VIDEO IC EEPROM Speed
BA A0
TV
R BIAS B DRIVE B BIAS B AMP
A F C
7 6 7
0 0 0
0 0 0
1 1 1
8A 8F 8C
3 3 3
PAL PAL NTSC Secam
40 40 60 40
R5 R5 G8 R5
Delay
1 5
PC
B CUT G AMP G CUT
LGE Internal Use Only