Factory Adjustment; Manual Adjust Component 480I/1080P Rgb 1080P; Edid/Ddc (Display Data Channel) Download; Edid Data And Model Option Download (Rs232) - LG 55LW5700 Service Manual

5 Factory Adjustment

5.1 Manual Adjust Component 480i/1080p
RGB 1080p
Summary : Adjustment component 480i/1080i and RGB
A
1080p is Gain and Black level setting at Analog to Digital
converter, and compensate the RGB deviation
Using instrument
A
• Adjustment remocon, 801GF(802B, 802F, 802R) or
MSPG925FA pattern generator (It can output 480i/1080i
horizontal 100% color bar pattern signal, and its output
level must setting 0.7V±0.1V p-p correctly)
<Pic.4 Adjustment pattern : 480i / 1080p 60Hz Pattern >
You must make it sure its resolution and pattern cause
A
every instrument can have different setting
Adjustment method 480i Comp1, Adjust 1080p Comp1/RGB
A
(Factory adjustment)
• ADC 480i Component1 adjustment
- Check connection of Component1
- MSPG-925FA -> Model: 209, Pattern 65
• Set Component 480i mode and 100% Horizontal Color
Bar Pattern(HozTV31Bar), then set TV set to
Component1 mode and its screen to "NORMAL"
• ADC 1080p Component1 / RGB adjustment
- Check connection both of Component1 and RGB
- MSPG-925FA -> Model: 225, Pattern 65
• Set Component 1080p mode and 100% Horizontal Color
Bar Pattern(HozTV31Bar), then set TV set to
Component1 mode and its screen to "NORMAL"
• After get each the signal, wait more a second and enter
the "IN-START" with press IN-START key of Service
remocon. After then select "7. External ADC" with
navigator button and press "Enter".
• After Then Press key of Service remocon "Right
Arrow(VOL+)"
• You can see "ADC Component1 Success"
• Component1 1080p, RGB 1080p Adjust is same method.
• Component 1080p Adjustment in Component1 input
mode
• RGB 1080p adjustment in RGB input mode
• If you success RGB 1080p Adjust. You can see "ADC
RGB-DTV Success"
Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
5.2 EDID (The
Identification Data) / DDC (Display Data
Channel) Download.
Summary
A
• It is established in VESA, for communication between PC
and Monitor without order from user for building user
condition. It helps to make easily use realize "Plug and
Play" function.
• For EDID data write, we use DDC2B protocol.
Auto Download
A
• After enter Service Mode by pushing "ADJ" key,
• Enter EDID D/L mode.
• Enter "START" by pushing "OK" key.
=> Caution : - Never connect HDMI & D-sub Cable when
the user downloading .
- Use the proper cables below for EDID
Writing.
§ Edid data and Model option download (RS232)
- 14 -
Extended Display
LGE Internal Use Only