50PG70FR-MB (CHASSIS:PP81C) - LG TV Service Manual (repair manual). Page 12

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(method 3)

Adjustment mode: Two modes of Medium(Vivid) and Warm
(Cool data is automatically calibrated by the Medium data)

- Equipment : 1) Color analyzer(CA100+, CA210) should be

used in the calibrated ch by CS-1000(.(LCD :
CH9, PDP : CH10)

2) Adjustment remocon

- For manual adjustment, it is also possible by the following

sequence.
Operate the zero-calibration of the CA-100+ or CA-210, then
stick sensor to the module when adjusting.

(1) Select white pattern of heat-run by pressing “POWER ON”

key on remote control for adjustment then operate heat run
longer than 15 minutes. (recommend) 
(If not executed this step, the condition for W/B will be
different)

(2) Changing to the AV mode by remote control.(Push front-

AV)

(3) Input external pattern(85% white pattern).
(4) Stick sensor to center of the screen and select each items

(Red/Green/Blue Gain and Offset) using 

D

/

E

(CH +/-) key

on R/C..

(5) Adjust R/ G/B Gain using 

F

/

G

(VOL +/-) key on R/C.

(6) Adjust two modes of Medium(Vivid) and Warm as below

figure.
(Fix the one of R/G/B and change the others)
1) Default : Medium(Vivid)
2) Push the “VOL +” key twice : Warm

[

Refer to the below case to know what value is fixed.

[CASE]
First adjust the coordinate much away from the target value(x, y).

1. x, y > target

1) Decrease the R, G. 

2. x, y < target

1) First decrease the B gain, 
2) Decrease the one of the others.

- In case of decreasing the x, decreasing the R : fix G
- In case of decreasing the y , decreasing the G : fix R

3. x > target ,  y < target

1) First decrease B, so make y a little more than the target.
2) Adjust x value by decreasing the R

4. x < target ,  y > target

1) First decrease B, so make x a little more than the target.
2) Adjust x value by decreasing the G

(7) When adjustment is completed, Exit adjustment mode

using EXIT key on R/C.

Caution: Each PCB assembly must be checked by check JIG set.

(Because power PCB Assembly damages to PDP
Module, especially be careful)

(Va, Vs voltage Adjustment)

D.M.M 1EA

Refer to Fig. 5

1) After receiving 100% Full White Pattern, HEAT RUN.
2) Connect + terminal of D. M..M. to Va pin of P812,

connect -terminal to GND pin of P812.

3) After turning VR901,voltage of D.M.M adjustment as

same as Va voltage which on label of panel right/top
(deviation; ±0.5V)

1) Connect + terminal of D. M..M. to Vs pin of P812,

connect -terminal to GND pin of P812.

2) After turning VR951 401, voltage of D.M.M adjustment

as same as Vs voltage which on label of panel right/top
( deviation ; ±0.5V)

<Fig. 7> Connection Diagram of Power Adjustment for Measuring