60PZ950-UA, 60PZ950U-UA (CHASSIS:PU12A) - LG TV Service Manual (repair manual). Page 9

(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.

(1) Color Analyzer : CA-210 (NCG: CH 9 / WCG: CH12 /PDP

Module:CH10)

(2) Adj. Computer 

(During auto adj., RS-232C protocol is needed)

(3) Adj. R/C
(4) Video Signal Generator MSPG-925F 720p/216Gray

(Model:217, Pattern:78)

-> Only when internal pattern is not available

- Color Analyzer Matrix should be calibrated using CS-1000

O

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]

O

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.

(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 “wb 00

ff” and adj. offset if needed.

- Offset adjust limit value.

Offset Min = 34 (Decimal)
Offset Max = 94 (Decimal)

Dynamic contrast : off
Dynamic color : off
OPC : Off
Energy saving mode : Off

(1) Set  TV  Picture  Mode  to  Standard  and  in  Advanced

Control, set Dynamic Contrast and Color ‘ Off ’ .

(2) Set TV in adj. mode using POWER On Key
(3) Press ADJ key -> EZ adjust using adj. R/C
(4) Using CH + / - KEY, select 10.TEST PATTERN then press

Enter  to  place  in  HEAT  RUN  mode  and  wait  for  30
minutes.

(4) Zero calibrate the probe of Color Analyzer, then place it on

the center of LCD module within 10 cm of the surface.

(5) Press ADJ key -> 7. White-Balance then press the cursor

to the right (KEY 

G

)

(When 

G

is  pressed  Full  White  internal  pattern  will  be

displayed)

(6) One  of  R  Gain  /  G  Gain  /  B  Gain  should  be  fixed  at  192,

and the rest will be lowered to meet the desired value.

(7) Adj. is performed in COOL, MEDIUM, WARM 3 modes of

color temperature

(8) Offset  Adjust  in  MEDIUM,  WARM  2  modes  of  color

temperature ( Only THX Model )

V 

If  internal  pattern  is  not  available,  use  HDMI  input.    In  EZ
Adj.  menu  7.White  Balance,  you  can  select  one  of  3
options: None, Inner, HDMI.  Default is inner.  By selecting
HDMI, you can adjust using HDMI signal.

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