LG 47LE8500 (CHASSIS:LA02E) Service Manual ▷ View online
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4.5 EDID/DDC Download
(1) Overview
It is a VESA regulation. A PC or a MNT will display an
optimal resolution through information sharing without any
necessity of user input. It is a realization of “Plug and Play”.
optimal resolution through information sharing without any
necessity of user input. It is a realization of “Plug and Play”.
(2) Equipment
• Since embedded EDID data is used, EDID download JIG,
HDMI cable and D-sub cable are not need.
• Adjust by using remote controller.
(3) Download method
1) Press Adj. key on the Adj. R/C,
2) Select EDID D/L menu.
3) By pressing Enter key, EDID download will begin
4) If Download is successful, OK is display, but If
2) Select EDID D/L menu.
3) By pressing Enter key, EDID download will begin
4) If Download is successful, OK is display, but If
Download is failure, NG is displayed.
5) If Download is failure, Re-try downloads.
Caution) When EDID Download, must remove RGB/HDMI
Cable.
(4) EDID DATA
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5. Final Assembly Adjustment
5.1. White Balance Adjustment
(1) Overview
• W/B adj. Objective & How-it-works
- Objective: To reduce each Panel’s W/B deviation
- How-it-works: When R/G/B gain in the OSD is at 192, it
- How-it-works: When R/G/B gain in the OSD is at 192, it
means the panel is at its Full Dynamic
Range. In order to prevent saturation of
Full Dynamic range and data, one of
R/G/B is fixed at 192, and the other two is
lowered to find the desired value.
Range. In order to prevent saturation of
Full Dynamic range and data, one of
R/G/B is fixed at 192, and the other two is
lowered to find the desired value.
- Adj. condition : normal temperature
1) Surrounding Temperature: 25±5ºC
2) Warm-up time: About 5 Min
3) Surrounding Humidity: 20% ~ 80%
2) Warm-up time: About 5 Min
3) Surrounding Humidity: 20% ~ 80%
(2) Adj. condition and cautionary items
• Lighting condition in surrounding area surrounding lighting
should be lower 10 lux. Try to isolate adj. area into dark
surrounding.
surrounding.
• Probe location: Color Analyzer (CA-210) probe should be
within 10cm and perpendicular of the module surface
(80°~ 100°)
(80°~ 100°)
• Aging time
1) After Aging Start, Keep the Power ON status during
5 Minutes.
2) In case of LCD, Back-light on should be checked
using no signal or Full-white pattern.
(3) Equipment
1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH12 /
LED : CH14)
2) Adj. Computer (During auto adj., RS-232C protocol is
needed)
3) Adjust Remocon
4) Video Signal Generator MSPG-925F 720p/216-Gray
4) Video Signal Generator MSPG-925F 720p/216-Gray
(Model:217, Pattern:78)
-> Only when internal pattern is not available
• Color Analyzer Matrix should be calibrated using CS-1000
(4) Equipment connection
(5) Adj. Command (Protocol)
1) RS-232C Command used during auto-adj.
2) Adjustment Map
(6) Adj. method
• Auto adj. method
1) Set TV in adj. mode using POWER ON key
2) Zero calibrate probe then place it on the center of the
2) Zero calibrate probe then place it on the center of the
Display
3) Connect Cable(RS-232C)
4) Select mode in adj. Program and begin adj.
5) When adj. is complete (OK Sing), check adj. status pre
4) Select mode in adj. Program and begin adj.
5) When adj. is complete (OK Sing), check adj. status pre
mode (Warm, Medium, Cool)
6) Remove probe and RS-232C cable to complete adj.
(7) Reference (White Balance Adj. coordinate and color
temperature)
• Luminance: 216 Gray
• Standard color coordinate and temperature using CS-
• Standard color coordinate and temperature using CS-
1000
• Standard color coordinate and temperature using CA-210
(CH 14)
Co lo r An alyzer
Co m p ut er
Pat t ern Gen erat o r
RS -232C
RS -232C
RS -232C
Probe
Signal Source
* If TV internal pattern is used, not needed
Connection Diagram of Automatic Adjustment
Mode
Color Coordination
Temp
∆
UV
x
y
COOL
0.269
0.273
13000K
0.0000
MEDIUM
0.285
0.293
9300K
0.0000
WARM
0.313
0.329
6500K
0.0000
Mode
Color Coordination
Temp
∆
UV
x
y
COOL
0.269±0.002
0.273±0.002
13000K
0.0000
MEDIUM
0.285±0.002
0.293±0.002
9300K
0.0000
WARM
0.313+0.002
0.329±0.002
6500K
0.0000
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• Standard color coordinate and temperature using CA-
210(CH 14) – by aging time
1) Edge/IOP LED models
5.2. Tool Option setting & Inspection per
countries
(1) Overview
• Tool option selection is only done for models in Non-USA
• Applied model: LA02D and LA02E Chassis applied to
CANADA and MEXICO
(2) Country Group selection
• Press ADJ key on the Adj. R/C, and then select Country
Group Menu
• Depending on destination, select KR or US, then on the
lower Country option, select US, CA, MX. Selection is
done using +, - KEY
done using +, - KEY
(3) Tool Option Inspection
• Press Adj. key on the Adj. R/C, and then check Tool
option.
5.3. Local dimming inspection (Optional)
5.3.1. Edge LED models with local dimming
(1) Press ‘TILT” key of the Adj. R/C and check moving
(1) Press ‘TILT” key of the Adj. R/C and check moving
patterns. The black bar patterns moves from left to right.
If local dimming function does not work, a whole screen
shows full white.
shows full white.
5.3.2. IOP LED models with local dimming
(1) Press ‘TILT” key of the Adj. R/C and check moving
patterns. The black cross-bar patterns moves from top-left to
Bottom-right. If local dimming function does not work, a whole
screen shows full white.
(1) Press ‘TILT” key of the Adj. R/C and check moving
patterns. The black cross-bar patterns moves from top-left to
Bottom-right. If local dimming function does not work, a whole
screen shows full white.
5.4. Ship-out mode check (In-stop)
• After final inspection, press In-Stop key of the Adj. R/C and
check that the unit goes to Stand-by mode.
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6. GND and Hi-pot Test
6.1. Method
6.1.1. GND & HI-POT auto-check preparation
(1) Check the POWER CABLE and SIGNAL CABE
insertion condition
6.1.2. GND & HI-POT auto-check
(1) Pallet moves in the station. (POWER CORD / AV
CORD is tightly inserted)
(2) Connect the AV JACK Tester.
(3) Controller (GWS103-4) on.
(4) GND Test (Auto)
CORD is tightly inserted)
(2) Connect the AV JACK Tester.
(3) Controller (GWS103-4) on.
(4) GND Test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, execute next process (Hi-pot test).
- If Test is passed, execute next process (Hi-pot test).
(Remove A/V CORD from A/V JACK BOX)
(5) HI-POT test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, GOOD Lamp on and move to next
- If Test is passed, GOOD Lamp on and move to next
process automatically.
6.2. Checkpoint
• TEST voltage
- GND: 1.5KV/min at 100mA
- SIGNAL: 3KV/min at 100mA
- SIGNAL: 3KV/min at 100mA
• TEST time: 1 second
• TEST POINT
• TEST POINT
- GND TEST = POWER CORD GND & SIGNAL CABLE
METAL GND
NEUTRAL
• LEAKAGE CURRENT: At 0.5mArms
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