LG 43LH54 Series Service Manual page 13

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)
4.1.2. Manual W/B process using adjusts Remote
control.
- After enter Service Mode by pushing "ADJ" key,
- Enter White Balance by pushing "►" key at "11. White
Balance".
4.1.2.1. CASE Cool Mode
First adjust the coordinate far away from the target value
(x, y).B
(1) x, y >target
(2) x, y< target
(3) x >target , y< target
(4) x< target , y >target
- Every 4 case have to fit y value by adjusting B Gain and
then fit x value by adjusting R-Gain
- In this case, increasing/decreasing of B Gain and R Gain
can be adjusted.
- How to adjust
(1) if G gain more than 172
Adjust R Gain and B Gain less than 192
(2) if the G gain value be adjusted down to 172
One of the R/B Gain is 254
(3) if G Gain is 172 , More than one of R/B Gain is to be
between 192~254
4.1.2.2. CASE Medium / Warm
First adjust the coordinate far away from the target value(x, y).
(1) x, y >target
) Decrease the R, G.
(2) x, y< target
) First decrease the B gain,
) Decrease the one of the others.
(3) x >target , y< target
) First decrease B, so make y a little more than the target.
) Adjust x value by decreasing the R
(4) x < target , y >target
) First decrease B, so make x a little more than the target.
) Adjust x value by decreasing the G
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.
Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
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".
4.2. IR emitter inspection.
(1) Start 3D pattern inspection.
(2) If IR emitter signal is correctly received to IR receiver, the
lamp of IR tester turns on.
4.3. Outgoing condition Configuration
When pressing IN-STOP key by SVC remote control, Red
LED are blinked alternatively. And then automatically turn off.
(Must not AC power OFF during blinking)
5. GND and HI-POT Test
5.1. HI-POT auto-check preparation
Check the POWER CABLE and SIGNAL CABLE insertion
condition
5.2. HI-POT auto-check
(1) Pallet moves in the station.
(POWER CORD / AV CORD is tightly inserted)
(2) Connect the AV JACK Tester.
(3) Controller (GWS103-4) on.
(4) HI-POT test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, GOOD Lamp on and move to next
process automatically.
5.3. Checkpoint
(1) Test voltage
- Touchable Metal : 3KV / min at 100mA
- SIGNAL : 3KV / min at 100mA
(2) TEST time: 1 second. (case : mass production )
(3) TEST POINT
- Touchable Metal => LIVE & NEUTRAL :
Touchable Metal.
- SIGNAL => LIVE & NEUTRAL : SIGNAL.
- 13 -
LGE Internal Use Only