LG 22MT57V Service Manual page 13

* Manual W/B process using adjusts Remote con-
trol.
■ After enter Service Mode by pushing "ADJ" key,
■ Enter White Balance by pushing "►" key at "White Bal-
ance".
* CASE Medium 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 be-
tween 192~254.
* CASE Cool / Warm
First adjust the coordinate far away from the target value(x, y).
1) x, y > target
a) Decrease the R, G.
2) x, y < target
a) First decrease the B gain,
b) Decrease the one of the others.
3) x >target , y < target
a) First decrease B, so make y a little more than the
target.
b) Adjust x value by decreasing the R
4) x < target , y > target
a) First decrease B, so make x a little more than the
target.
b) 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. If it is not same,
then correct it same with BOM and unplug AC cable. For cor-
rect 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".
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Only for training and service purposes
4.2. DPM test
■ Measurement Condition: 100 - 240V@ 50/60Hz
1) Set Input to RGB-PC and connect D-sub cable to set –
RGB Mode. Set Input to HDMI (with Input Label set to PC)
and connect HDMI cable to set – HDMI Mode
2) Cut off H sync or V sync of signal.
3) Check DPM operation refer to the below table.
Operating Condition
Power S/W On Sleep mode -
RGB,HDMI
4.3. PIP Check
1) Press "Power on" key of service remote control.
2) Input RGB & TV(ATV or DTV) signal.
3) Set Input mode to RGB.
4) Press 'PIP" key of ADJ remote controller
5) Check TV Video & Audio signal of Sub picture.
4.4. Outgoing condition Configuration
■ When pressing IN-STOP key by SVC remocon, Red LED
are blinked alternatively. And then automatically turn off.
(Must not AC power OFF during blinking)
5. Model Name & Serial Number
Download
5.1. Model name & Serial number
■ Press "Power on" key of service remocon.(Baud rate :
115200 bps)
■ Connect USB to RS232 Signal Cable to USB Jack.
■ Write Serial number.
■ Must check the serial number at the Diagnostics of SET UP
menu. (Refer to below).
5.2. Signal TABLE
CMD LENGTH ADH
CMD : A0h
LENGTH : 85~94h (1~16 bytes)
ADH : EEPROM Sub Address high (00~1F)
ADL : EEPROM Sub Address low (00~FF)
Data : Write data
CS: CMD + LENGTH + ADH + ADL + Data_1 + ... + Data_n
Delay : 20ms
- 13 -
Sync Video LED
(H/V) (SET)
Off/Off Off Amber
ADL DATA_1 ... Data_n
LGE Internal Use Only
Wattage
(W)
1
CS DELAY