LG 47LM8600 / 47LM8650 (CHASSIS:LA23E) Service Manual ▷ View online
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4.4. White Balance Adjustment
4.4.1. Overview
▪ W/B adj. Objective & How-it-works
(1) Objective: To reduce each Panel’s W/B deviation
(2) 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.
(3) Adj. condition: normal temperature
- Surrounding Temperature: 25±5 °C
- Warm-up time: About 5 Min
- Surrounding Humidity: 20% ~ 80%
4.4.2. 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/204-Gray
(Model: 217, Pattern: 49)
※
Color Analyzer Matrix should be calibrated using CS-1000
4.4.3. Equipment connection
4.4.4. Adjustment Command (Protocol)
(1) RS-232C Command used during auto-adj.
RS-232C COMMAND
Explanation
CMD
DATA
ID
Wb
00
00
Begin White Balance adj.
Wb
00
ff
End White Balance adj.
(internal pattern disappears )
(2) Adjustment Map
Adj. item Command
(lower caseASCII)
Data Range
(Hex.)
CMD1
CMD2
MIN
MAX
Cool
R Gain
j
g
00
C0
G Gain
j
h
00
C0
B Gain
j
i
00
C0
Medium
R Gain
j
a
00
C0
G Gain
j
b
00
C0
B Gain
j
c
00
C0
Warm
R Gain
j
d
00
C0
G Gain
j
e
00
C0
B Gain
j
f
00
C0
4.4.5. Adj. method
4.4.5.1. Auto adj. method
(1) Set TV in ADJ mode using P-ONLY key (or POWER ON
key)
(2) Place optical probe on the center of the display
- It need to check probe condition of zero calibration before
adjustment.
(3) Connect RS-232C Cable
(4) Select mode in ADJ Program and begin a adjustment.
(5) When WB adjustment is completed with OK message,
check adjustment status of pre-set mode (Cool, Medium,
Warm)
(6) Remove probe and RS-232C cable.
▪ W/B Adj. must begin as start command “wb 00 00” , and
finish as end command “wb 00 ff”, and Adj. offset if need
4.4.5.2. Manual adj. method
(1) Set TV in Adj. mode using POWER ON
(2) Zero Calibrate the probe of Color Analyzer, then place it on
the center of LCD module within 10cm of the surface..
(3) Press ADJ key -> EZ adjust using adj. R/C -> 9. White-
Balance then press the cursor to the right (KEY►). When
KEY(►) is pressed 216 Gray internal pattern will be
displayed.
(4) One of R Gain / G Gain / B Gain should be fixed at 192,
and the rest will be lowered to meet the desired value.
(5) Adj. is performed in COOL, MEDIUM, WARM 3 modes of
color temperature.
▪ If internal pattern is not available, use RF input. In EZ Adj.
menu 6.White Balance, you can select one of 2 Test-pattern:
ON, OFF. Default is inner (ON). By selecting OFF, you can
adjust using RF signal in 216 Gray pattern.
▪ Adj. condition and cautionary items
(1) Lighting condition in surrounding area
Surrounding lighting should be lower 10 lux. Try to isolate
adj. area into dark surrounding.
(2) Probe location: Color Analyzer (CA-210) probe should be
within 10cm and perpendicular of the module surface (80°~
100°)
(3) Aging time
- After Aging Start, Keep the Power ON status during 5
Minutes.
- In case of LCD, Back-light on should be checked using no
signal or Full-white pattern.
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4.4.6. Reference (White Balance Adj. coordinate and
color temperature)
▪ Luminance: 204 Gray
▪ Standard color coordinate and temperature using CS-1000
(over 26 inch)
Mode
Coordinate
Temp
△
uv
X
Y
Cool
0.269
0.273
13,000K
0.0000
Medium
0.285
0.293
9,300K
0.0000
Warm
0.313
0.329
6,500K
+0.0030
▪ Standard color coordinate and temperature using CA-210(CH 18) - ALEF
Mode
Coordinate
Temp
△
uv
X
Y
Cool
0.269±0.002
0.273±0.002
13,000K
0.0000
Medium
0.285±0.002
0.293±0.002
9,300K
0.0000
Warm
0.313±0.002
0.329±0.002
6,500K
+0.0030
▪ Standard color coordinate and temperature using CA-210(CH 14) - LGD
Mode
Coordinate
Temp
△
uv
X
Y
Cool
0.269±0.002
0.273±0.002
13,000K
0.0000
Medium
0.285±0.002
0.293±0.002
9,300K
0.0000
Warm
0.313±0.002
0.329±0.002
6,500K
0.0000
4.4.6.1 ALELF&EDGE LED&IOL White balance table
▪ Edge LED module change color coordinate because of aging time
▪ apply under the color coordinate table, for compensated aging time
Edge (LM860X)
GP4 Aging time
(Min)
Cool
Medium
Warm
X
Y
X
Y
X
Y
269
273
285
293
313
329
1
0-2
283
293
299
313
320
339
2
3-5
282
291
298
311
319
337
3
6-9
281
290
297
310
318
336
4
10-19
279
289
295
309
316
335
5
20-35
277
284
293
304
314
330
6
36-49
274
279
290
299
311
325
7
50-79
271
277
287
297
308
323
8
80-149
270
274
286
294
307
320
9
Over 150
269
273
285
293
306
319
4.4.7 THX Adjustment (For US Models)
For THX models, White Balance 4 point automatic control can
be done through the below steps. (Warm axis)
(1) 100 IRE White Balance Adjustment done.
(2) Control Backlight so the Maximum brightness
*In case of 100 IRE adjustment, backlight target value is
125cd/m2.
(3) 4 Point gamma and W/B adjustment done.
* With the controlled maximum brightness, adjust the Gamma
2.2 (60, 40, and 20 IRE / do not adjust at 80 IRE)
*For 10 IRE, set R, G, B gain to 0, 0, and 0, respectively.
4.5. Option selection per country
4.5.1. Overview
(1) Press ADJ key on the Adj. R/C, and then select Country
Group Menu.
(2) Depending on destination, select KR or US, then on the
lower Country option, select US, CA, MX. Selection is done
using +, - KEY
4.6. Tool Option Inspection
▪ Method: Press Adj. key on the Adj. R/C, then select Tool option.
Model
Tool 1 Tool 2 Tool 3 Tool 4 Tool 5 Tool 6 Tool 7
47LM8600-UC 32983 41026 30509 12333 23055 1324 62731
55LM8600-UC 32985 41026 30509 12333 23055 1323 62731
55LM8600-UC 32985 41026 30509 12333 23055 1323 62731
4.7. Local Dimming Inspection (Optional)
4.7.1. ALEF models with local dimming
(1) Press ‘TILT” key of the Adj. R/C and check moving
patterns. The black bar patterns moves from top to bottom.
If a local dimming function does not work, a whole screen
shows full white
4.8. 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.
▪ After final inspection, Always turn on the Mechanical S/W.
4.9. WIFI MAC ADDRESS CHECK
a. Using RS232
Command
Set ACK
Transmission
[A][l][][Set ID][][20][Cr]
[O][K][x] or [N][G]
b. check the menu on in-start
Note that there are Wi-Fi MAC and MAC address.
Wi-Fi MAC is used for wireless network and MAC address is used
for wired network
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5.1. Method
- Check that Power Cord is fully inserted to the SET.
(If loose, re-insert)
- Unit fully inserted Power cord; Antenna cable and A/V
arrive to the auto-check process.
- Connect D-terminal to AV JACK TESTER
- Auto CONTROLLER (GWS103-4) ON
- Perform GND TEST
- If NG, Buzzer will sound to inform the operator.
- If OK, changeover to I/P check automatically.
(Remove CORD, A/V form AV JACK BOX)
- Perform I/P test
- If NG, Buzzer will sound to inform the operator.
- If OK, Good lamp will lit up and the stopper will allow the
pallet to move on to next process.
5.2. Checkpoint
(1) Test voltage
- GND: 1.5KV/min at 100mA
- SIGNAL: 3KV/min at 100mA
(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 0.5mArms
6. EYE-Q Operation check
Step 1) Turn on the TV..
Step 2) Press 'EYE button' on the adjustment remote-
controller.
Step 3) Cover 'Eye Q sensor' on the front of set with your
hands, hold it for 6 seconds.
Step 4) Check "the Sensor Data" on the screen, make certain
that Data is below 10. If Data isn’t below 10 in 6
seconds, Eye Q sensor would be bad. You should
change Eye Q sensor.
Step 5) Uncover your hands from Eye Q sensor, hold it for 6
seconds.
Step 6) Check "Back Light(xxx)" on the screen, check data
increase . You should change Eye Q sensor.
7. Magic Motion Remote Control Inspection
- Required Instruments: Inspection RF-remote control,
Inspection IR-KEY-CODE remote control.
- Prior to the test, AA battery for the RF-remote control should
be adequate.
(Change the battery for each LOT is recommended)
- Test procedures
(1) Press the ‘START’ key on the controller to pair with the set.
(2) Press the ‘OK’ key in the controller and check whether the
cursor appears on the set.
(3) Press ‘Vol+ (STOP)’ key to de-pair with the set.
8. 3D function test
8.1 Test equipment
(1) Pattern Generator MSHG-600 or MSPG-6100 (HDMI 1.4
support)
(2) Pattern: HDMI mode (model No. 872, pattern No. 83)
8.2 Test method
(1) Input 3D test signal as Fig.1.
(2) Press ‘OK” key as a 3D input OSD is shown.
(3) Check pattern as Fig2 without 3D glasses. (3D mode
without 3D glasses)
Fig.2
<OK in 3D mode without 3D glasses>
<Step 2>
<Step 5>
<Step 6>
<Step 3>
<Step 4>
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9. HDMI ARC Function Inspection
9.1. Test equipment
- Optic Receiver Speaker
- MSHG-600 (SW: 1220 ↑)
- HDMI Cable (for 1.4 version)
9.2 Test method
(1) Insert the HDMI Cable to the HDMI ARC port from the
master equipment (HDMI1)
(2) Check the sound from the TV Set
(3) Check the Sound from the Speaker or using AV & Optic
TEST program (It’s connected to MSHG-600)
* Remark: Inspect in Power Only Mode and check SW version
in a master equipment
.
10. USB S/W Download
(optional, Service only)
(1) Put the USB Stick to the USB socket
(2) Automatically detecting update file in USB Stick
- If your downloaded program version in USB Stick is lower
than that of TV set, it didn’t work. Otherwise USB data is
automatically detected.
(3) Show the message “Copying files from memory”
(5) Updating Completed, The TV will restart automatically
(6) If your TV is turned on, check your updated version and
Tool option.
* If downloading version is more high than your TV have, TV
can lost all channel data. In this case, you have to channel
recover. If all channel data is cleared, you didn’t have a DTV/
ATV test on production line.
* After downloading, TOOL OPTION setting is needed again.
(1) Push "IN-START" key in service remote controller.
(2) Select "Tool Option 1" and Push “OK” button.
(3) Punch in the number. (Each model has their number.)
(5) Updating Completed, The TV will restart automatically
(6) If your TV is turned on, check your updated version and
Tool option.
* If downloading version is more high than your TV have, TV
can lost all channel data. In this case, you have to channel
recover. If all channel data is cleared, you didn’t have a DTV/
ATV test on production line.
* After downloading, TOOL OPTION setting is needed again.
(1) Push "IN-START" key in service remote controller.
(2) Select "Tool Option 1" and Push “OK” button.
(3) Punch in the number. (Each model has their number.)
(4) Updating is staring.
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