LG 40LX570H Service Manual

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LGE Internal Use Only
Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
5.1.2. Equipment
(1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH12 / LED:
CH14)
(2) Adj. Computer(During auto adj., RS-232C protocol is
needed)
(3) Adjust Remocon
(4) Video Signal Generator MSPG-925F 720p/204-Gray
(Model:217, Pattern:49)
→ Only when internal pattern is not available
※ Color Analyzer Matrix should be calibrated using
CS-1000
5.1.3. Equipment connection
5.1.4. Adjustment Command (Protocol)
(1) 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.
▪Adj. Map - Applied Model :
32/40/43/49/55/65LX570H-UA, 32/40/43/49LX560H-UA.
5.1.5. Adjustment method
5.1.5.1. Auto WB calibration
(1) Set TV in ADJ mode using P-ONLY key (or POWER ON
key)
(2) Place optical probe on the center of the display
- It need to check probe condition of zero calibration before
adjustment.
(3) Connect RS-232C Cable
(4) Select mode in ADJ Program and begin a adjustment.
(5) When WB adjustment is completed with OK message,
check adjustment status of pre-set mode (Cool, Medium,
Warm)
(6) Remove probe and RS-232C cable.
* W/B Adj. must begin as start command “wb 00 00” , and
finish as end command “wb 00 ff”, and Adj. offset if need.
5.1.5.2. Manual adj. method
(1) Set TV in Adj. mode using POWER ON
(2) Zero Calibrate the probe of Color Analyzer, then place it on
the center of LCD module within 10cm of the surface.
(3) Press ADJ key -> EZ adjust using adj. R/C -> 6. White-
Balance then press the cursor to the right (KEY►).
(When KEY(►) is pressed 204 Gray(80IRE) internal
pattern will be displayed)
(4) Adjust modes
1) Cool : Fix the G gain at least 172 and change the others
(R/B Gain).
* If R or B gain is over 255, G gain can be adjust below
172.
2) Adjust two modes (Medium / Warm) :
Fix the one of R/G/B gain to 192 (default data) and
decrease the others.
* 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. Fix G gain at least 172 : Adjust R, B Gain ( In Case of
Mostly Blue Gain Saturation )
2. When R or B Gain > 255, Release Fixed G Gain and
Readjust
Color Analyzer
Computer
Pattern Generator
RS-232C
RS-232C
RS-232C
Probe
Signal Source
* If TV internal pattern is used, not needed
Adj. item
Command
(lower caseASCII)
Data Range
(Hex.)
Default
(Decimal)
CMD1 CMD2 MIN MAX
Cool
R Gain j G 00 C0 172
G Gain j H 00 C0 172
B Gain j I 00 C0 192
R Cut 64
G Cut 64
B Cut 64
Medium
R Gain j A 00 C0 192
G Gain j B 00 C0 192
B Gain j C 00 C0 192
R Cut 64
G Cut 64
B Cut 64
Warm
R Gain j D 00 C0 192
G Gain j E 00 C0 192
B Gain j F 00 C0 172
R Cut 64
G Cut 64
B Cut 64
RS-232C
COMMAND
Explanation
CMD ID DATA
Wb 00 00 Begin White Balance adj.
Wb 00 ff End White Balance adj. (internal pattern disappears )

LG 40LX570H Specifications

General

Screen shape	Flat
Response time	9.5 ms
Display diagonal	40 \
Display brightness	225 cd/m²
Native aspect ratio	16:9
Native refresh rate	60 Hz
LED backlighting type	Direct-LED
Supported video modes	1080p
Contrast ratio (dynamic)	1000000:1
Contrast ratio (typical)	4000:1
Screen format adjustments	4:3, 16:9, Zoom
Viewing angle, horizontal	176 °
Supported graphics resolutions	1920 x 1080 (HD 1080)
Motion interpolation technology	-
3D	No
Cable lock slot type	Kensington
Tuner type	Analog & digital
Analog signal format system	NTSC
Digital signal format system	ATSC
Sound modes	Game, Music, Movie, News, Sports
Audio system	Clear Voice II
RMS rated power	20 W
Number of speakers	2
DVI-D ports quantity	0
USB 2.0 ports quantity	1
Product color	Black
Panel mounting interface	200 x 200 mm
AC input voltage	110 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (standby)	0.5 W
Power consumption (typical)	34 W
Package depth	163 mm
Package width	1070 mm
Package height	610 mm
Package weight	12300 g
Sustainability certificates	RoHS, ENERGY STAR
Cables included	AC

Weight and Dimensions

Depth (with stand)	282 mm
Height (with stand)	576.6 mm
Weight (with stand)	10400 g
Depth (without stand)	55.9 mm
Width (without stand)	912 mm
Height (without stand)	528 mm
Weight (without stand)	7480 g