50PN4503-ZA, 50PN450B-ZA (CHASSIS:PD31A) - LG TV Service Manual (repair manual). Page 9

Read LG 50PN4503-ZA / 50PN450B-ZA (CHASSIS:PD31A) Service Manual online

- 9 -
* Auto-control interface and directions
1)  Adjust in the place where the influx of light like floodlight 
around is blocked. (Illumination is less than 100Lux).
2)  Adhere closely  the Color Analyzer ( CA210 ) to the 
module less than 10cm distance, keep it with the surface 
of the Module and Color Analyzer’s Prove vertically.
(80~100°).
3) Aging time  
-  After aging start, keep the power on (no suspension of 
power supply) and heat-run over 5 minutes.
-  Using ‘no signal’ or ‘full white pattern’ or the others, 
check the back light on.   
■  Auto adjustment Map(RS-232C)
RS-232C COMMAND
[ CMD    ID    DATA ]    
   Wb     00       00       White Balance Start
   Wb     00       ff         White Balance End
* Caution 
- Color Temperature : COOL, Medium, Warm.
-  One of R Gain/G Gain/ B Gain should be kept on 0xC0, 
and adjust other two lower than C0. (when R/G/B Gain 
are all C0, it is the FULL Dynamic Range of  Module)
* Manual W/B process using adjusts Remote control.
■ After enter Service Mode by pushing “ADJ” key,
■  Enter White Balance by pushing “►” key at “6. White 
Balance”.
■  Stick the sensor to the center of the screen and select 
each items(Red/Green/Blue Gain) using ▲/▼(CH +/-) 
key on R/C.
■ Adjust R/G/B Gain using◄/►(VOL +/-) key on R/C.
■  Adjust three modes all(Cool/Medium/Warm) : Fix the one 
of R/G/B Gain and Change the others.
■ When the adjustment is completed, Enter “COPY ALL”.
■ Exit adjustment mode using EXIT key on R/C.
*  After You finish all adjustments, Press “In-start” button and 
compare Tool option and Area option value with its BOM, if it 
is correctly same then unplug the AC cable.
   If it is not same, then correct it same with BOM and unplug 
AC cable.
  For correct it to the model’s module from factory JIG model.
*  Push The “IN STOP KEY” after completing the function 
inspection. And Mechanical Power Switch must be set “ON”
*  To check the coordinates of White Balance, you have to 
measure at the below conditions.
-  Picture mode : Vivid, Energy Saving : Off, Below the Ad-
vanced control, Dynamic Contrast : Off, Dynamic Colour : Off 
  Colour Temp. 
-> Picture Mode change : Vivid -> Vivid(User)
4.3. DDC EDID Write (HDMI 256Byte) 
      -> Not used any more, Use Auto D/L
■ Connect HDMI Signal Cable to HDMI Jack.
■  Write EDID DATA to EEPROM(24C02) by using DDC2B 
protocol.
■ Check whether written EDID data is correct or not.
*  For SVC main Ass’y, EDID have to be downloaded to Insert 
Process in advance.
4.4. EDID DATA
(1) All Data : HEXA Value
(2) Changeable Data :
     * : Serial No : Controlled / Data:01
     ** : Month : Controlled / Data:00
     *** : Year : Controlled
     **** : Check sum
4.5. EDID DATA Auto Download
(1) Press Adj. key on the Adj. R/C,
(2) Select EDID D/L menu.
(3) By pressing Enter key, EDID download will begin
(4)  If Download is successful, OK is display, but If Download is 
failure, NG is displayed.
(5) If Download is failure, Re-try downloads.
  
RS-232C 
COMMAND
[CMD ID DATA]
M
I
N
CENTER
(DEFAULT)
M
A
X
Cool Mid Warm
Cool Mid Warm
R Gain
jg
Ja
jd
00
172 192
192
192
G Gain
jh
Jb
je
00
172 192
192
192
B Gain
ji
Jc
jf
00
192 192
172
192
R Cut
64
64
64
128
G Cut
64
64
64
128
B Cut
64
64
64
128
Cool
30
Medium
0
Warm
30
Page of 36
Display

Click on the first or last page to see other 50PN4503-ZA / 50PN450B-ZA (CHASSIS:PD31A) service manuals if exist.