LG M237WD Service Manual page 13

3.2.1COMPONENT input ADC
3.2.1.1Component Gain/Offset Adjustment
• Convert to Component in Input-source
I2C COMMAND :0xF4(SELECT_INPUT)0x00 0x40
(COMPONENT)
cf.0x10(TV),0x20(AV),0x40(COMPONENT),
0x60(RGB),0x90(HDMI)
• Signal equipment displays at SD Mode
Impress Resolution: 480i
MODEL :209in Pattern Generator(SD Mode)
PATTERN :08in Pattern Generator(MSPG-925
SERISE)
• Signal equipment displays at HD Mode
Impress Resolution:1080i
MODEL :223in Pattern Generator(HD Mode)
PATTERN :08in 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 "0xC8(1080i)"address of EEPROM
"0xA2" is "0xAA" or not.
• If "0xC8(1080i)" address of EEPROM "0xA2" isn't
"0xAA", we adjust once more
• We can confirm the ADC values from "0xC2~(1080i)"
addresses in a page "0xA2"
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 (1080i)
4.RGB (PC: 1680X1050 @60Hz)
5.HDMI
6.PC Audio In and H/P Out
* Display and Sound check is executed by Remote controller.
Copyright 2009 LG Electronics. Inc. All right reserved.
C
Only for training and service purposes
4. Total Assembly line process
4.1 Adjustment Preparation
• Above 30 minutes H/run in RF no signal
• 15 Pin D-Sub Connector, for IIIC communication not
including VGA signal,is connected to AUTO W/B
EQUIPMENT..
4.2 Check coordinate of 9300K
•Set Input mode to RGB.
• Set Temperature : 9300K
• Adjust x: 0.285±0.005, y: 0.293±0.005(9300°K )
(Full white MSPG series Pattern 4)
4.3 Check color coordinate of 6500K
• Set Input mode to RGB.
• Set Temperature : 6500K
• Adjust x:0.313±0.005, y:0.329±0.005(6500°K )
(Full white MSPG series Pattern 4)
4.4 DPM operation confirmation (Only Apply for MNT Model)
Check if Power LED Color and Power Consumption operate
as standard.
• Set Input to RGB and connect D-sub cable to set
• Measurement Condition : (100~240V@50/60Hz)
• Confirm DPM operation at the state of screen without
Signal
4.5 DDC EDID Write Model Name(M237WD-PMJ):
• Connect D- sub Signal Cable to D-Sub Jack.
• Connect DVI Signal Cable to DVI Jack.
• Connect HDMI1,2 Signal Cable to HDMI1,2 Jack.
• Write EDID DATA to EEPROM(24C02) by using DDC2B
protocol.
• Check whether written EDID data is correct or not.
(refer to Product spec).
4.6 HDCP (High-Bandwidth Digital Contents Protection)SETTING
• Connect D-sub Signal Cable to D-Sub Jack
• Input HDCP key with HDCP-key-in-program
• HDCP Key value is stored on EEPROM(AT24C512)
which is 80~A1 addresses of 0xA0~0xA2 page
• AC off/on and on HDCP button of MSPG925 and
confirm whether picture is displayed or not of using
MSPG925
• HDCP Key value is different among the sets.
4.7 Outgoing condition Configuration
• After all function test., press IN-STOP Key by SVC
Remote controller. And Make Ship Condition.
• When pressing IN-STOP key by SVC remocon, Red
LED are blinked alternatively. And then Automatically
turn off. (Must not AC power OFF during blinking)
4.8 Internal pressure
• Confirm whether is normal or not when between power
board's ac block and GND is impacked on 1.5kV(dc) or
2.2kV(dc) for one second
- 13 - LGE Internal Use Only