DOWNLOAD LG 22LV2130 (CHASSIS:LP91U) Service Manual ↓ Size: 3.03 MB | Pages: 31 in PDF or view online for FREE

Model
22LV2130 (CHASSIS:LP91U)
Pages
31
Size
3.03 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
22lv2130-chassis-lp91u.pdf
Date

LG 22LV2130 (CHASSIS:LP91U) Service Manual ▷ View online

5.2.2. Adjustment of White Balance (for Manual adjustment)
(1) Color analyzer(CA100+, CA210) should be used in the
calibrated ch by CS-1000.
(2) Operate the zero-calibration of the CA100+ or CA-210,
then stick sensor to the module when adjusting.
(3) For manual adjustment, it is also possible by the following
sequence.
1) Select white pattern of heat-run by pressing “POWER
ON” key on remote control for adjustment then operate
heat run longer than 15 minutes. (If not executed this
step, the condition for W/B may be different.)
2) Push “Exit” key.
3) Change to the AV mode by remote control.
4) Input external pattern (85 % white pattern)
5) Push the ADJ key -> Enter “0000” (Password)
6) Select “3. W/B ADJUST”.
7) Enter the W/B ADJUST Mode.
8) Stick the sensor to the center of the screen and select
each items (Red/Green/Blue Gain and Offset) using
D
/
E
(CH +/-) key on Remote control.
9) Adjust R/G/B Gain using 
F
/
G
(VOL +/-) key on Remote
control.
10) Adjust three modes all (Cool/ Medium/ Warm) : Fix the
one of R/G/B gain and change the others
11) When adjustment is completed, Enter “COPY ALL”.
12) Exit adjustment mode using EXIT key on Remote control.
* CASE
First adjust the coordinate far away from the target value(x, y).
1. x, y > target
i) Decrease the R, G. 
2. x, y < target
i) First decrease the B gain, 
ii) Decrease the one of the others.
3. x > target, y < target
i) First decrease B, so make y a little more than the target.
ii) Adjust x value by decreasing the R.
4. x < target, y > target
i) First decrease B, so make x a little more than the target.
ii) Adjust x value by decreasing the G.
(4) Standard color coordinate and temperature when using the
CA100+ or CA210 equipment
1) All Edge LED(except LGD), lamp over 26 inch
under 22 inch.
3) W/B table in process of time which must be applied for
LGD edge LED module(Target color coordinate is
different by aging time)
- To check the Coordinates of White Balance, you have to
measure at the below conditions.
Picture Mode : Select Vivid and change Dynamic Contrast :
Off, Dynamic Colour : Off -> Picture Mode change ->
Vivid(User)
(If you miss the upper condition, the coordinates of W/B can
be lower than the spec.
- 13 -
Coordinate
Mode
x
y
Temp
uv∆
Cool
0.269 ± 0.002  0.273 ± 0.002
13,000 K
0.000
Medium
0.285 ± 0.002
0.293 ± 0.002
9,300 K
0.000
Warm
0.313 ± 0.002
0.329 ± 0.002
6,500 K
0.003
Coordinate 
Mode
x
y
Temp
uv∆
Cool
0.285 ± 0.002
0.293 ± 0.002
9,300 K
0.000
Medium
0.295 ± 0.002
0.305 ± 0.002
8,000 K
0.000
Warm 0.313 
± 0.002
0.329 
± 0.002
6,500 
K
0.003
Aging Time
Cool
Medium
Warm
GP2R
(Min.)
X
Y
X
Y
X
Y
269
273
285
293
313
329
1
0-2
279
288
295
308
319
338
2
3-5
278
286
294
306
318
336
3
6-9
277
285
293
305
317
335
4
10-19
276
283
292
303
316
333
5
20-35
274
280
290
300
314
330
6
36-49
272
277
288
297
312
327
7
50-79
271
275
287
295
311
325
8
80-149
270
274
286
294
310
324
9
Over 150
269
273
285
293
309
323
- 14 -
TROUBLESHOOTING
No power
(LED indicator off)
Check 24V, 12V, 3.5V 
of Power B/D
Check short of Main B/D 
or Change Power B/D
Pass
Check Output of
IC1001, IC1002, IC1003,
 IC1005, IC1007 
Check P403 Connector 
Change LED Assembly 
:  
[A] PROCESS(for non-adapter models)
Fail
Fail
Pass
Pass
Check LED Assembly 
Change IC1002, IC1008, Q1003
Pass
Check short of
IC1001, IC1002, IC1003,
 IC1005, IC1007
Fail
Re-soldering or Change defect part
Fail
No Raster
[B]: Process
Check LED status
On Display Unit
Repeat [A]/[A-1] Process
Pass
Fail
Check PANEL_VCC
of LVDS wafer
Check Output of Q1003
Fail
Change Inverter Connector
Or Inverter
Fail
Pass
Fail
Pass
Change LVDS cable
Fail
Check LVDS Cable
Pass
Check Panel Link Cable 
Or Module
Change Panel Link Cable
Or Module
Check Inverter Connector
Or Inverter
Pass
- 15 -
No Raster on PC Signal
Check Input source Cable
And Jack
Pass
Re-soldering or 
Change the defect part
Pass
Check the Input/Output
Of IC201
Fail
Re-soldering or 
Change the defect part,
Check RGB EDID Data
Repeat [A]/[A-1], & [B] Process
Pass
Check the Input/Output
Of J202
Fail
Pass
Check the Input/Output
Of IC800
Fail
Re-soldering or 
Change the defect part
Pass
No Raster on COMMPONENT Signal
Check Input source 
Cable And Jack
Pass
Re-soldering or 
Change the defect part
Check the Input/Output
Of IC800
Fail
Pass
Re-soldering or 
Change the defect part
Repeat [A]/[A-1], & [B] Process
Check The Input/Output
Of JK101
Fail
Pass
No Raster on HDMI Signal
Check Input source 
Cable And Jack
Pass
Check the Input/Output
of JK301, JK302, JK303
Fail
Re-soldering or 
Change the defect part
Pass
Pass
Check the Input/Output
of IC300, IC301, IC303
Fail
Re-soldering or 
Change the defect part
Check HDMI EDID Data
Re-download HDCP
Pass
Pass
Check the Input/Output
of IC800
Fail
Re-soldering or 
Change the defect part
Repeat [A]/[A-1], & [B] Process
- 16 -
No Sound
Check The Input Sourse 
Check The Input/
Output of IC501
Re-soldering or 
Change the defect part
Fail
Pass
Pass
Check The Speaker
Change Speaker 
Fail
Check The Speaker Wire
Pass
Change The Source Input
Fail
No Raster On AV Video Signal
No Signal On TV(RF) Signal
Check Input source 
Cable And Jack
Pass
Check Input source 
Cable and Jack
Pass
Check The Input/
Output of JK103
Re-soldering or 
Change the defect part
Pass
Fail
Pass
Repeat [A]/[A-1], & [B] Process
Pass
Check the Input/
Output of IC800
Fail
Re-soldering or 
Change the defect part
Pass
Check The Input/
Output of TU600
Of TU500
Re-soldering or 
Change the defect part
Pass
Fail
Pass
Check the Input/
Output of IC800
Fail
Re-soldering or 
Change the defect part
Repeat [A]/[A-1], & [B] Process
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