LG 21FS2RLX, Руководство по обслуживанию

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1. Application Object
These instructions are applied to all of the color TV, MC-049C.
2. Notes
(1) Because this is not a hot chassis, it is not necessary to use
an isolation transformer. However, the use of isolation
transformer will help protect test instrument.
(2) Adjustment must be done in the correct order.But the
adjustment can be changed by consideration of mass
production.
(3) The adjustment must be performed in the circumstance of
25±5°C of temperature and 65±10% of relative humidity if
there is no specific designation.
(4) The input AC voltage of the receiver must keep rating
voltage in adjusting.
(5) The receiver must be operated for about 15 minutes prior
to the adjustment.
3. Focus adjustment
3.1. Preliminary steps
Tune the TV set to receive a digital pattern.
(SVC mode:Automatically mode change the STANDARD
mode)
3.2. Adjustment Method
1) Single Focus CPT
Adjust the upper Focus volume of FBT for the best focus of
horizontal line A,vertical line B.
4. Screen voltage adjustment
(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) Adjust the screen volume of FBT jack,When width line is
seen turn the FBT screen volume at the position of
disappearance it.
(4) Press the TV/AV button to exit SVC mode.
5. White balance adjustment
NOTE : When adjusting white balance automatically,connect the
adjustment JIG in SVC mode.(When pressing ,MUTE
button on remote control, it changes to CPU OFF MODE
and screen displays “AUTO”.)
(1) Receive 100% white pattern.
(2) Adjust LOW Light status(4.5FL) of CUT R, CUT B at CUT
G:80.
(3) Adjust HIGH LIght status(35FL) of WDR R, WDR B at
WDR G:400.
(4) Repeat above step (2) and (3) for the best condition each
status of High Light and Low Light.
ADJUSTMENT INSTRUCTIONS
A
B
Menu
X
Y
Color Temperature
288
295
9000°K
266
273
13000°K
EU N-EU
<Table 1> White Balance Color analyzer
Menu
CUT R
CUT G
CUT B
WDR R
WDR G
WDR B
LOW LIGHT
HIGH LIGHT
0 ~ 511
0 ~ 511
0 ~ 511
0 ~ 511
0 ~ 511
0 ~ 511
80
80
80
400
400
400
Range DATA
<Table 2> White Balance Initial Data
Menu
<Fig 1. PAL Digital Pattern(EU05CH)>
2. White balance IIC Parameter
Program
Sub Add
Start Bit
Stop Bit
Offset
Polarity
EP_Rom_S
R_Amp
TWBeng_v049
1C8
12
4
0
1
9091
R_Cut
TWBeng_v049
1C3
12
4
0
1
8A8B
B_Amp
TWBeng_v049
1CA
12
4
0
1
9495
Program
Vcd Slave
TWBeng_v049
BCF0
Program
Eprom_Slave
TWBeng_v049
AC
Speed
1
Delay
30
B_Cut
TWBeng_v049
1C5
12
4
0
1
8E8F
Speed/ Plus 1 1 1 1
<Table 3> White Balance Initial Data
1. IC
VCD IC
EP_ROM
VCT49xyi
24C16
Micronas
ST, ATMEL
0 A 0
Name Maker Algorithm
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