LG 43LF510A Service Manual page 11

(2) Medium / Warm Mode
1) Purpose : Adjust the color temperature to reduce the
deviation of the module color temperature.
2) Principle: To adjust the white balance without the saturation,
- In Medium mode, Fix to G gain to 192 and change the
others(R/B Gain)(20LB45X model)
- Fix the one of R/G/B gain to 192(default data) and
decrease the others.
3) Adjustment mode : Two modes - Medium / Warm
5.6. Reference(White Balance Adjustment
coordinate and color temperature)
(1) Luminance: 204 Gray, 80IRE
(2) Standard color coordinate and temperature using CS-1000
(over 26 inch)
■ The spec of color temperatre and coordinate for Auto W/B.
Model Mode Color Temp.
Cool
13,000 K
(C50)
32LF5XXA Medium
9,300 K
(BOE/CSOT) (0)
Warm
6,500 K
(W50)
32~49LF5XXA Refer to below W/B table in process of
(LGD) aging time.
* Note : x,y coordinates are drifted about 0.007 after 30 mins
heat-run. So checking color coordinate within 5-min at
total assembly line, consider x,y coordinates might be
up to 0.007 than x,y target of each color temperature.
● W/B Table in process of aging time
- 32"~49" LGD Module(except 32/43LF51 LGD)
(normal line)
Aging time Cool
color coordinate x
Target 271
1 0-2 282
2 3-5 281
3 6-9 279
4 10-19 277
5 20-35 275
6 36-49 274
7 50-79 273
8 80-119 272
9 Over 120 271
- AUO /INX/ COST / SHARP / BOE / 32/43LF51 LGD Module
which cool spec is 13000K
cool
x y
spec 271 270
target 278 280
Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Color coordinate Remark
x = 0.278 (± 0.002)
y = 0.280 (± 0.002) * Test signal
x = 0.293 (± 0.002)
- Inner pattern
y = 0.299 (± 0.002)
for W/B adjust
- External white
x = 0.320 (± 0.002)
pattern (85IRE,
y = 0.339 (± 0.002)
204gray)
Medium Warm
y x y x
270 286 289 313
289 297 308 324
287 296 306 323
284 294 303 321
280 292 299 319
277 290 296 317
274 289 293 316
272 288 291 315
271 287 290 314
270 286 289 313
med Warm
x y x
286 289 313
293 299 320
6. Tool Option setting & Inspection per
countries
(1) Press 'IN START' key at Factory Service remote control.
(2) Select 'Tool Option 1'.
(3) Punch in the number and press 'OK'. (Each of models has
their number)
(4) Correct 'Tool Option2' ~ 'Tool Option5'.
(5) Completed adjusting Tool option.
7. Ship-out mode check (In-stop)
▪ After final inspection, press In-Stop key of the Adjustemnt
Remote Control and check that the unit goes to Stand-by mode.
8. AUDIO output check
8.1. Audio input condition
(1) RF input: Mono, 1 KHz sine wave signal, 100% Modulation
(2) CVBS, Component: 1 KHz sine wave signal (0.4 Vrms)
8.2. Specification
Item
Audio practical max
Output, L/R (Distortion
=10% max Output)
9. GND and HI-POT Test
9.1. GND & HI-POT auto-check preparation
(1) Check the POWER CABLE and SIGNAL CABE insertion
condition
y
9.2. GND & HI-POT auto-check
329
348
(1) Pallet moves in the station. (POWER CORD / AV CORD is
346 tightly inserted)
(2) Connect the AV JACK Tester.
343
(3) Controller (GWS103-4) on.
339
(4) GND Test (Auto)
336
- If Test is failed, Buzzer operates.
333
- If Test is passed, execute next process (Hi-pot test).
331
(Remove A/V CORD from A/V JACK BOX)
330
(5) HI-POT test (Auto)
329
- If Test is failed, Buzzer operates.
- If Test is passed, GOOD Lamp on and move to next
process automatically.
9.3. Checkpoint
Y
(1) Test voltage
329
- GND: 1.5 KV / min at 100 mA
339
- SIGNAL: 3 KV / min at 100 mA
(2) TEST time: 1 second
(3) TEST POINT
- GND Test = POWER CORD GND and SIGNAL CABLE
GND.
- Hi-pot Test = POWER CORD GND and LIVE &
NEUTRAL.
(4) LEAKAGE CURRENT: At 0.5 mArms
- 11 -
Min Typ Max Unit
(1) Measurement condition
W
4.5 5.0 6.0 - EQ/AVL/Clear Voice: Off
Vrms
(2) Speaker (8 Ω Impedance)
LGE Internal Use Only
Remark