LG 26LQ630H (CHASSIS:LA1EY) Service Manual ▷ View online
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5.3. White Balance Adjustment
5.3.1. Overview
5.3.1.1. 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 ºC
- Warm-up time: About 5 Min
- Surrounding Humidity: 20% ~ 80%
5.3.2. 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)
→ Only when internal pattern is not available
※ Color Analyzer Matrix should be calibrated using
CS-1000
5.3.3. Equipment connection
5.3.4. 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 )
Ex) wb 00 00 -> Begin white balance auto-adj.
wb 00 10 -> Gain adj.
ja 00 ff -> Adj. data
jb 00 c0
...
...
wb 00 1f -> Gain adj. complete
*(wb 00 20(start), wb 00 2f(endc)) -> Off-set adj.
wb 00 ff ->End white balance auto adj.
(2) Adjustment Map
Applied Model : 26LQ630H -UA,
Adj. item
Command
(lower case ASCII)
Data Range
(Hex.)
Default
(Decimal)
CMD1
CMD2
MIN
MAX
Cool
R Gain
j
g
00
C0
TBD
G Gain
j
h
00
C0
TBD
B Gain
j
i
00
C0
TBD
R Cut
TBD
G Cut
TBD
B Cut
TBD
Medium
R Gain
j
a
00
C0
TBD
G Gain
j
b
00
C0
TBD
B Gain
j
c
00
C0
TBD
R Cut
TBD
G Cut
TBD
B Cut
TBD
Warm
R Gain
j
d
00
C0
TBD
G Gain
j
e
00
C0
TBD
B Gain
j
f
00
C0
TBD
R Cut
TBD
G Cut
TBD
Color Analyzer
Computer
Pattern Generator
※
Signal Source
Probe
RS-232C
RS-232C
RS-232C
※
If TV internal pattern is used, not needed
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5.3.5. Adjustment method
5.3.5.1 Auto adj. method
(1) Set TV in adj. mode using POWER ONLY (P-ONLY) key
(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 completed (OK Sing), check adj. status of pre
mode (Cool, Medium, Warm)
(6) Remove probe and RS-232C cable to complete adj.
▪ W/B Adj. must begin as start command “wb 00 00” , and
finish as end command “wb 00 ff”, and Adj. offset if need
5.3.5.2. 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 -> 6. White-
Balance then press the cursor to the right (KEY►).
(When KEY(►) is pressed 204 Gray(80IRE) 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 204 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.
5.3.6. Reference (White Balance Adj. coordinate and
color temperature)
■ W/B Equipment condition
CA210 : CCFL/EEFL -> Ch.9 Test Signal : Inner pattern (80IRE)
LED -> Ch.14 Test Signal : Inner pattern (80IRE)
■ Above 5 minutes H/run in the inner pattern. (“power on” key
of adjust remote control)
(1) 22LQ630H-UA
Mode
Coordinate
Temp
△
uv
Remark
X
Y
Cool
0.285 (±0.002) 0.293 (±0.002) 9,300 0.0000 <Test Signal>
Inner Pattern
(204 Gray, 80IRE)
Medium 0.295 (±0.002) 0.305 (±0.002) 8,000 0.0000
Warm
0.313 (±0.002) 0.329 (±0.002) 6,500 0.0000
(2) 26/32LQ630H-UA
Mode
Coordinate
Temp
△
uv
Remark
X
Y
Cool
0.269 (±0.002) 0.273 (±0.002) 13,000 0.0000 <Test Signal>
Inner Pattern
(204 Gray, 80IRE)
Medium 0.285 (±0.002) 0.293 (±0.002)
9,300 0.0000
Warm
0.313 (±0.002) 0.329 (±0.002)
6,500 0.0000
■ In case of LGD Edge LED module, the color coordinates is
changing by aging, so you have to use the below table.
EDGE LED (26/32LQ630H-UA) – LGD Only
5.4 HDCP
(High-Bandwidth Digital Contents
Protection) SETTING
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5.5. Option selection per country
5.5.1. Overview
America due to rating
(2) Applied model: LA2AC Chassis is applied in USA
5.5.2. Method
(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
5.5.3. Tool Option inspection
▪ Press Adj. key on the Adj. R/C, then select Tool option.
Model
Module Tool 1 Tool 2 Tool 3 Tool 4 Tool 5 COM-
MERCIAL
OPTION
22LQ630H-UA
8196
10250 53289
2564
256
114
1034
26LQ630H-UA
12288 10251 53291
2564
268
114
1034
32LQ630H-UA
16384 10251 53291
2564
256
114
1035
5.7. 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
6. GND and HI-POT Test
6.1. GND & HI-POT auto-check preparation
(1) Check the POWER CABLE and SIGNAL CABE insertion
condition
6.2. 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)
- If Test is failed, Buzzer operates.
- 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 process
automatically.
6.3. 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
7. AUDIO
No
Item
Min
Typ
Max
Unit
1. Audio practi-
cal max
Output, L/R
(Distor-
tion=10%
max Output)
6.3
7.0
8.4
W
Measurement
condition
EQ Off
AVL Off
Clear Voice Off
7.09
7.48
8.19
Vrms
2. Speaker
(8Ω Imped-
ance)
5.0
15.0
W
Measurement
condition
EQ On
AVL On
Clear Voice On
● Measurement condition:
(1) RF input: Mono, 1KHz sine wave signal, 100% Modulation
(2) CVBS, Component: 1KHz sine wave signal 0.4Vrms
(3) RGB PC: 1KHz sine wave signal 0.7Vrms
8. USB Boot file Download
(Option, Service only)
(1) Execute ISP program “Mstar ISP Utility” and then click
“Config” tab.
(2) Set as below, and then click “Auto Detect” and check “OK”
message. If “Error” is displayed, Check connection
between computer, jig, and set.
(3) Click “Read” tab, and then load download file (XXXX.bin)
by clicking “Read”
(4) Click “Connect” tab. If “Can’t ” is displayed, Check
connection between computer, jig, and set
(5) Click “Auto” tab and set as below
(6) Click “Run”.
(7) After downloading, check “OK” message
(1)
filexxx.bin
(2)
(3)
Please Check the Speed
To use speed between
from 200KHz to 400KHz
To use speed between
from 200KHz to 400KHz
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9. 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.)
10. LAN Main board Check
10.1. Overview
▪ It is LNET RF modem & FTG card
10.2. Equipment
(1) b_LAN Checker: UTC-1000 (with Cable accessory)
(2) Computer(for test result monitoring)
(3) Connection JIG
10.3. Equipment connection map & b_LAN Check
(4) Updating is staring.
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