42LN52XX, 42LN5200, 42LN5204 (CHASSIS:LD36M) - LG TV Service Manual (repair manual). Page 12

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3.4. Function Check
- Check display and sound 
■ Check Input and Signal items.
1) TV
2) AV (SCART / CVBS)
3) HDMI
* Display and Sound check is executed by Remote control.
<Caution>
Not to push the INSTOP key after completion if the function 
inspection.
4. Total Assembly line process
4.1.V-com adjustment
■ Insert V-com adjust pattern
(1) Push ‘Power Only’ key on SVC remote controller.
(2) Push ‘Yellow’ key.
(4) Push number ‘0’ key.
- Default : 160
■ V-com adjust (Variable range : ±5)
- 5 digit move → push navigation key up or down.
- 1 digit move → push navigation key left or right.
Keep move V-com adjust until disappear flicker.
After V-com adjust push ‘enter’ (save) key.
■ Exit V-COM adjust pattern
- Push ‘Power Only’ key on SVC remote control.
4.2. White Balance adjustment
▪ W/B Equipment condition
CA210 : LED -> CH14, Test signal: Inner pattern(80IRE)
▪  Above 5 minutes H/run in the inner pattern. (“power on” key 
of adjust remote control) 
▪ Normal line(LGD/CMI, March ~ December for Gumi, Global)
▪  Normal  line(LGD/CMI,  January  ~  February  for  Gumi, Apply 
not Cinema Screen)
* Aging chamber(LGD/CMI)
* Connecting picture of the measuring instrument
(On Automatic control)
Inside PATTERN is used when W/B is controlled. Connect to 
auto controller or push Adjustment R/C P-ONLY → Enter the 
mode of White-Balance, the pattern will come out.
Mode
Temp
Coordinate spec
Cool
13,000 K X=0.271 (±0.002)
Y=0.270 (±0.002)
Medium
9,300 K
X=0.285 (±0.002)
Y=0.293 (±0.002)
Warm
6,500 K
X=0.313 (±0.002)
Y=0.329 (±0.002)
NetCase4 Aging time
(Min)
Cool
Medium
Warm
X
y
x
y
x
y
271
270
285
293
313
329
1
0-2
281  287  295
310
320
342
2
3-5
280  285  294
308
319
340
3
6-9
278  284  292
307
317
339
4
10-19
276  281  290
304
315
336
5
20-35
275  277  289
300
314
332
6
36-49
274  274  288
297
313
329
7
50-79
273  272  287
295
312
327
8
80-119
272  271  286
294
311
326
9
Over 120
271  270  285
293
310
325
NetCase4 Aging time
(Min)
Cool
Medium
Warm
X
y
x
y
x
y
271
270
285
293
313
329
1
0-2
283  292  297
315
322
347
2
3-5
282  290  296
313
321
345
3
6-9
280  288  294
311
319
343
4
10-19
277  284  291
307
316
339
5
20-35
275  279  289
302
314
334
6
36-49
274  275  288
298
313
330
7
50-79
273  272  287
295
312
327
 8
80-119
272  271  286
294
311
326
9
Over 120
271  270  285
293
310
325
NetCase4 Aging time
(Min)
Cool
Medium
Warm
X
y
x
y
x
y
271
270
285
293
313
329
1
0-2
280  285  294
308
319
340
2
3-5
276  280  290  303  315  335 
3
6-9
272  275  286  298  311  330 
4
10-19
269  272  283  295  308  327 
5
20-35
267  268  281  291  306  323 
6
36-49
266  265  280  288  305  320 
7
50-79
265  263  279  286  304  318 
 8
80-119
264  261  278  284  303  316 
9
Over 120
264  260  278  283  303  315 
Full White Pattern
CA-210
COLOR
ANALYZER
TYPE : CA-210
RS-232C Communication
V-Com
   
  V-COM              ◄    
         
   ►  
   
Press OK to Saver
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