50PH4700-SD, 50PH470H-SA (CHASSIS:PB32A) - LG TV Service Manual (repair manual). Page 8

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5.2.3. Equipment connection map
5.2.4. Adj. Command (Protocol)
■ Protocol
<Command Format>
- LEN: Number of Data Byte to be send
- CMD: Command
- VAL: FOS Data
- CS: Checksum of sent Data
- A: Acknowledge
Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX]
■ RS-232C Command used during auto-adj.
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(End)) -> Off-set adj.
      wb 00 ff   -> End white balance auto-adj.
5.2.5.  Adj. method
5.2.5.1. Auto adj. method
(1) Set TV in adj. mode using POWER On 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 complete (OK Sign), check adj. status per 
mode
     (Warm, Medium, Cool)
(6) Remove probe and RS-232C cable to complete adj.
■  Adj. must begin w/ command “wb 00 00”, and end w/“wb 
00 ff”and adj. offset if needed.
■ Offset adjust limit value.
   Offset Min = 34 (Decimal)
   Offset Max = 94 (Decimal)
5.2.5.2. Auto adj. Sequence
- White Balance Adjust Sequence
  Start -> Cool_Gain -> Medium_Gain -> Warm_Gain -> End
5.2.5.3. Manual adj. method
Dynamic contrast : off
Dynamic color : off
OPC : Off
Energy saving mode : Off
● Test Equipment: CA-210
-  Using PDP color temperature, Color Analyzer (CA-210) 
must use CH 10, which Matrix compensated (White, Red, 
Green, Blue compensation) with CS-2100. See the 
Coordination bellowed one. 
● Manual adjustment sequence is like bellowed one.
-  Turn to “Ez-Adjust” mode with press ADJ button of service 
remocon.
-  Select “10.Test Pattern” with CH+/- button and press 
enter. Then set will go on Heat-run mode. Over 30 
minutes set let on Heat-run mode.
-  Let CA-210 to zero calibration and must has gap more 
10cm from center of PDP module when adjustment. 
-  Press “ADJ” button of service remocon and select 
“7.White-Balance” in “Ez-Adjust” then press “►” button of 
navigation key. (When press “►” button then set will go to 
full white mode)
- Adjust at three mode (Cool, Medium, Warm)
- If “cool” mode 
   Let B-Gain to 192 and R, G, B-Cut to 64 and then control 
R, G gain adjustment High Light adjustment.
-  If “Medium” and “Warm” mode Let R-Gain to 192 and R, 
G, B-Cut to 64 and then control G, B gain adjustment 
High Light adjustment.
- All of the three mode 
   Let R-Gain to 192 and R, G, B-Cut to 64 and then control 
G, B gain adjustment High Light adjustment.
- With volume button (+/-) you can adjust.
-  After all adjustment finished, with Enter turn to Ez-Adjust 
mode. Then with ADJ button, exit from adjustment mode
* Attachment:  White Balance adjustment coordination and 
color temperature.
RS-232C COMMAND
[CMD          ID        DATA]
Meaning
wb
00
00
Begin White Balance adj.
wb
00
ff
End  White  Balance  adj.  (internal 
pattern disappears)
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