LG OLED77G6P, Service Manual, Page: 18 / 108

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5.3.3. Equipment
(1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH12 / LED:
CH14 / OLED : CH : 17)
(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
5.3.4. Equipment connection
5.3.5. 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 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
5.3.6. Adjustment method
5.3.6.1. Auto WB calibration
(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
5.3.6.2. OLED White balance table
(1) Cool Mode
1) Purpose : Especially B-gain fix adjust leads to the
luminance enhancement. Adjust the color temperature to
reduce the deviation of the module color temperature.
2) Principle : To adjust the white balance without the
saturation, Adjust the B gain more than 192 ( If R gain or
G gain is more than 255 , G gain can adjust less than
192 ) and change the others ( R/G Gain ).
3) Adjustment mode : mode – Cool
(2) Medium
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, Fix the B gain to 192 (default data) and
decrease the others
3) Adjustment mode : mode – Medium
(3) Warm
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, Fix the W gain to 192 (default data) and
decrease the others.
3) Adjustment mode : mode – Warm
5.3.7. Reference (White Balance Adj. coordinate and
color temperature)
(1) Luminance: 204 Gray, 80IRE
(2) Standard color coordinate and temperature using CS-1000
(over 26 inch)
5.3.8. 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 0.277 0.278 11,000K -0.0030
Medium 0.286 0.289 9300K 0.0000
Warm 0.313 0.329 6500K +0.0030
Color Analyzer
Computer
Pattern Generator
RS-232C
RS-232C
RS-232C
Probe
Signal Source
* If TV internal pattern is used, not needed