Read LG 22LC2D (CHASSIS:LA75E) Service Manual online
- 10 -
- Adjust by commanding AUTO_COLOR_ADJUST
(0xF1) 0x00 0x02 instruction.
2) Confirmation
- We confirm whether “0xBF(480i)/ 0xC8(1080i)”
address of EEPROM “0xA2” is “0xAA” or not.
- If “0xBF(480i)/0xC8(1080i)” address of EEPROM
“0xA2” isn’t “0xAA”, we adjust once more.
- We can confirm the ADC values from “0xB9~0xBE
(480i)/ 0XC2~(1080i)” addresses in a page “0xA2”.
3.3. Function Check
A
Check display and sound
- Check Input and Signal items. (cf. work instructions)
1) TV
2) AV (CVBS/ S-Video)
4) COMPONENT (480i)
5) RGB (PC : 1024 x 768 @ 60hz)
6) HDMI
7) PC Audio In and H/P Out
2) AV (CVBS/ S-Video)
4) COMPONENT (480i)
5) RGB (PC : 1024 x 768 @ 60hz)
6) HDMI
7) 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) Above 30 minutes H/run in RF no signal
(2) 15 Pin D-Sub Jack is connected to the signal of Pattern
(2) 15 Pin D-Sub Jack is connected to the signal of Pattern
Generator.
4.2. Confirm color coordinate of RGB
(1) Set Input to RGB.
(2) Input signal : (1680 x 1050 @ 60Hz) Full white 216/255
(2) Input signal : (1680 x 1050 @ 60Hz) Full white 216/255
gray level (85 IRE, Model : 122, Pattern : 78 at MSPG925L)
(3) Set CSM : Cool
(4) Confirm whether x = 0.283±0.015, y = 0.297±0.015(9300°K
(4) Confirm whether x = 0.283±0.015, y = 0.297±0.015(9300°K
± 1000°K) or not.
4.3. Confirm color coordinate of AV
(1) Set Input to AV
(2) Input signal : CVBS - Full white 216/255 gray level (85 IRE,
(2) Input signal : CVBS - Full white 216/255 gray level (85 IRE,
Model : 202, Pattern : 78 at MSPG925L)
(3) Set PSM : Standard / CSM : Cool
(4) Confirm whether x = 0.283±0.015, y = 0.297±0.015(9300°K
(4) Confirm whether x = 0.283±0.015, y = 0.297±0.015(9300°K
± 1000°K) or not.
4.4. Confirm color coordinate of component
(1) Set Input to COMPONENT.
(2) Input signal : 480P - Full white 216/255 gray level (85 IRE
(2) Input signal : 480P - Full white 216/255 gray level (85 IRE
Model : 212, Pattern : 78 at MSPG925L)
(3) Set PSM : Standard / CSM : Cool
(4) Confirm whether x = 0.283±0.015, y = 0.297±0.015(9300°K
(4) Confirm whether x = 0.283±0.015, y = 0.297±0.015(9300°K
± 1000°K) or not.
4.5. DPM operation confirmation
(MNT Model)
- Check if Power LED Color and Power Consumption operate
as standard.
(1) Set Input to RGB and connect D-sub cable to set.
(2) Measurement Condition : (100-240V@ 50/60Hz)
(3) Confirm DPM operation at the state of screen without
(2) Measurement Condition : (100-240V@ 50/60Hz)
(3) Confirm DPM operation at the state of screen without
signal.
4.6 DDC EDID Write
1) Connect D-sub Signal Cable to D-Sub Jack.
2) Connect HDMI Signal Cable to HDMI Jack.
3) Write EDID DATA to EEPROM(24C02) by using DDC2B
2) Connect HDMI Signal Cable to HDMI Jack.
3) Write EDID DATA to EEPROM(24C02) by using DDC2B
protocol.
4) Check whether written EDID data is correct or not. (refer
to Product spec).
- EDID DATA
1) ANALOG DATA 128Byte
2) DIGITAL DATA 256Byte
a. All Data : HEXA Value
b. Changeable Data
b. Changeable Data
* Serial No : Controlled/ Data : 01
** Month : Controlled/ Data :00
*** Year : Controlled
**** Check sum
** Month : Controlled/ Data :00
*** Year : Controlled
**** Check sum
4.7. HDCP SETTING
(High-Bandwidth Digital Contents Protection)
1) Connect D-sub Signal Cable to D-Sub Jack.
2) Input HDCP key with HDCP-key- in-program.
3) HDCP Key value is stored on EEPROM(AT24C512) which
2) Input HDCP key with HDCP-key- in-program.
3) HDCP Key value is stored on EEPROM(AT24C512) which
is 80~A1 addresses of 0xA0~0xA2 page.
4) AC off/ on and on HDCP button of MSPG925 and confirm
whether picture is displayed or not of using MSPG925.
5) HDCP Key value is different among the sets.
<Adjustment pattern (COMPONENT)>
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