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LG 19LG31 Service Manual page 9

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3.2.2. COMPONENT input ADC
(1) Component Gain/Offset Adjustment
1) Convert to Component in Input-source
I
2
C command : 0xF4(Select input) 0x00 0x40(Component)
cf. 0x10(TV), 0x20(AV), 0x40(COMPONENT),
0x60(RGB), 0x90(HDMI)
<Adjustment pattern (COMPONENT)>
2) Signal equipment displays
Impress Resolution 480i
MODEL : 209
in Pattern Generator(480i Mode)
PATTERN : 08 in Pattern Generator(MSPG-925 Series)
3) Adjust by commanding AUTO_COLOR_ADJUST (0xF1)
0x00 0x02 instruction.
4) Signal equipment display
-Impress Resolution : 1080i
- MODEL: 223
in Pattern Generator(1080i Mode)
- PATTERN: 08 in Pattern generator(MAPG-925 series)
5) Adjust by commanding AUTO_COLOR ADJUST(0xF1)
0x00 0x02 instruction.
* Manual ADC process using Service Remote control. After
enter Service Mode by pushing "ADJ" key, execute "Auto-
G
adjust" by pushing "
EZ ADJUST
0. ADC CALIBRATION : COMPONENT
1. ADC ADJUST
2. SUB B/C ADJUST
3. W/B ADJUST
4. WHITE PATTERN
5. 2HOUR OFF
6. OAD
7. UART DOWNLOAD
8. FACTORY MODE
9. DEBUG MODE
(2) Confirmation
1) We confirm whether "0xBF(480i)/0xC8(1080i)" address
of EEPROM "0xA2" is "0xAA" or not.
2) If "0xBF(480i)/0xC8(1080i)" address of EEPROM "0xA2"
isn't "0xAA", we adjust once more.
3) We can confirm the ADC values from "0xB9~0xBE(480i)/
0xC2~(1080i)" addresses in a page "0xA2".
* Manual ADC Confirmation using Service Remocon. After
enter Service Mode by pushing "INSTART" key.
MODEL : 22LG30_UA_UA/LPL_LM220WT7
S/W VER : 3.00.1
UTT : 6
ADC CAL.
RGB : OK
YPbPr(SD) : OK
YPbPr(HD) : OK
0. STEREO DETECT
1. SYNC LEVEL
2. DTV SNR
3. SCREEN MUTE
4. POWER OFF HISTORY
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
" key at "0. ADC CALIBRATION".
: OFF
: ON
: ON
: OFF
3.3. Function Check
3.3.1. Check display and sound
- Check Input and Signal items. (cf. work instructions)
1) TV
2) AV (CVBS/ S-Video)
3) COMPONENT (480i)
4) RGB (PC : 1024 x 768 @ 60hz)
5) HDMI
6) PC Audio In and H/P Out
* Display and Sound check is executed by Remote control.
4. Total Assembly line process
4.1. Adjustment Preparation
1) Heat-run above 30 minutes in RF no signal.
2) 15 Pin D-sub jack is connected to the auto W/B equipment.
4.2. Adjust color coordinate of Cool
1) Set Input to RGB.
2) Set Temperature : Cool
3) Adjust x=0.285±0.005, y=0.293±0.005 (9300ºK±1000ºK) or
not.
4.3. Adjust color coordinate of Medium
1) Set Input to RGB.
2) Set Temperature : Medium
3) Adjust x=0.295±0.005, y=0.305±0.005 (8000ºK±1000ºK) or
not.
4.4. Adjust color coordinate of Warm
1) Set Input to RGB.
2) Set Temperature : Warm
3) Adjust x=0.313±0.005, y=0.329±0.005 (8000ºK±1000ºK) or
not.
* Manual ADC Confirmation using Service Remocon. After
enter Service Mode by pushing "INSTART" key.
EZ ADJUST
0. ADC CALIBRATION
1. ADC ADJUST
2. SUB B/C ADJUST
3. W/B ADJUST
4. WHITE PATTERN
5. 2HOUR OFF
6. OAD
7. UART DOWNLOAD
8. FACTORY MOD
9. DEBUG MODE
* Adjust "R/G/B - GAIN" by pushing "
* Adjust "R/G/B - GAIN" by pushing "
* Adjust "R/G/B - GAIN" by pushing "
- 9 -
: RGB
: OFF
: ON
: ON
: OFF
F
", "
G
" key at "Cool"
F
G
", "
" key at "Medium"
F
G
", "
" key at "Warm"
LGE Internal Use Only

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