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LG M1994A - Connecting to External Devices; Watching RGB;DVI from Set-top Box;DVD

LG M1994A
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Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
- 15 -
3.2.1COMPONENT input ADC
3.2.1.1Component Gain/Offset Adjustment
• Convert to Component in Input-source
• Signal equipment displays
Impress Resolution 480P
MODEL : 212 in Pattern Generator
(480p Mode, Y: 100%, Pb/Pr: 75%)
PATTERN : 08
in Pattern Generator
( MSPG-925 SERISE)
Adjustment pattern (COMPONENT )
Adjust by commanding AUTO_COLOR_ADJUST(0xF1)
0x00 0x02 instruction
3.2.1.2 Confirmation
• We confirm whether “0x8D, 0x8E” address of EEPROM
“0xB4” is “0xAA” or not.
If “0x8D, 0x8E” address of EEPROM “0xB4” isn’t
“0xAA”, we adjust once more
We can confirm the ADC values from “0x00~0x05”
addresses in a page “0xB4”
3.2 Function Check
3.2.1 Check display and sound
• Check Input and Signal items. ( cf. work instructions)
1.TV
2.AV (CVBS/ S-Video)
3.COMPONENT (480P)
4.RGB (PC : 1024 x 768 @ 60hz )
5.DVI-PC
6.HDMI-DTV
7.PC Audio In and H/P Out
8.AV Sound
* Display and Sound check is executed by Remote controller.
4. Total Assembly line process
4.1 Adjustment Preparation
• Above 30 minutes H/run in Video no signal
• 15 Pin D-Sub Jack is connected to the signal of Pattern
Generator.
4.2 Confirm color coordinate of RGB
- Check White Balance
• Set Input to RGB.
• Input signal : (1024 x 768 @ 60Hz)
Full white 255/255 gray level
(100 IRE, Model : 60, Pattern : 4 at MSPG925L)
• Set ACC : 6500k
• Confirm whether x = 0.313±0.03, y = 0.329±0.03 or not.
• Confirm whether luminance over 200cd/m2
• Set ACC : 9300k
• Confirm whether x = 0.283±0.03, y = 0.298±0.03 or not.
- Check sRGB
• Set Input to RGB.
• Input signal : (1024 x 768 @ 60Hz)
Full white 255/255 gray level
(100 IRE, Model : 60, Pattern : 4 at MSPG925L)
• Set ACC : sRGB
• Confirm whether x = 0.313±0.03, y = 0.329±0.03 or not.
• Confirm whether luminance = 180±50 cd/m2
4.3 Confirm color coordinate of AV
• Set Input to AV.
• Input signal : CVBS, NTSC @ 60Hz
Full white 216/255 gray level
(85 IRE, Model : 201, Pattern : 78 at MSPG925L)
• Set APC : Clear / ACC : Cool
• Confirm whether x= 0.285°±0.03, y= 0.293°±0.03 or not.
4.4 Confirm color coordinate of COMPONENT
• Set Input to COMPONENT.
• Input signal : 480P
Full white 216/255 gray level
(85 IRE Model : 212, Pattern : 78 at MSPG925L)
• Set APC : Clear / ACC : Cool
• Confirm whether x= 0.285°±0.03, y= 0.293°±0.03 or not.
4.5 Confirm Auto adjustment operation.
Input 1Dot on/off & Rectangle Pattern at Model 60
(1024*768@60Hz).
Confirm adjustment operation by changing Clock,
Phase, H/V Position.
Check Clock, Phase by pressing AUTO Key after
varying the Clock & the Phase
4.6 Other quality
Confirm that each items satisfy under standard condition
that was written product spec.
Confirm Video and Sound at each source
4.6.1 AV
Select input AV(S-video) and whether picture is
displayed or not
Select input AV(CVBS) and whether picture is
displayed or not
4.6.2 TV
• Select input TV and check below item
1> In Gumi Factory
US04 – CAPTION, Stereo
4.6.3 RGB
4.6.3.1
Select input RGB model 112(1440*900@60hz), 64 Gray
Scale pattern and whether picture is displayed or not
4.6.4 COMPONENT
Select input COMPONENT and whether picture is
displayed or not

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