Read LG 42LB2R (CHASSIS:LP62E) Service Manual online
(1) Method of Auto RGB Color Balance
1) Input the PC 1024x768 @ 60Hz with 100% color bar
pattern like Fig.2. into RGB.
2) Set the PSM to Standard mode in Picture menu.
3) Press the INSTART key on R/C for adjustment.
4) Press the
3) Press the INSTART key on R/C for adjustment.
4) Press the
G
(Vol. +) key operate To set , then it becomes
automatically.
5) Auto-RGB OK means adjustment is completed.
6. White Balance
=> Caution : Before White-balance, the AV ADC should be
done. (ZH:AV3, TH:AV1, MH:VIDEO1)
=> After Aging, When the procedure is changed White
balance adjustment, it will be canceled Heat_run mode
auto.
auto.
Notice : Before White-balance, change input mode.
Move to AV3(ZH) or AV1(TH) or VIDEO1(MH) by
using the FRONT-AV KEY on Remote controller.
using the FRONT-AV KEY on Remote controller.
<Caution>
- System control RS-232 Host should be "PC" for
adjustment.
- AV ADC(ZH: AV3, TH : AV1, MH: VIDEO1) should be
done before White-balance.
* Test Equipment
Color Analyzer (CA-110)
PC(For communication through RS-232C)
=>UART Baud rate : 115200
Pattern Generator (MSPG-925FA etc.)
PC(For communication through RS-232C)
=>UART Baud rate : 115200
Pattern Generator (MSPG-925FA etc.)
*Target Value [ PSM: Standard(ZH/TH), CSM: Normal]
- Normal(9300K±1000K) x:283±0.015, y: 298±0.015
-Luminance(Y)
-Luminance(Y)
AV : Min. 250 Cd/m2 (LPL)
AV : Min. 200Cd/m2 (AUO)
AV : Min. 200Cd/m2 (AUO)
=> Reference Value(Automatically fixed)
- Cool(11000K±1000K)
- Warm(7200K±1000K)
- Warm(7200K±1000K)
6.1. Manual white Balance (AV)
1) Execute CA-110 Zero Calibration.
2) Execute the SET Heat Run for 30minutes.
3) As below Fig.3, Supply 216Level (85 IRE) full screen
2) Execute the SET Heat Run for 30minutes.
3) As below Fig.3, Supply 216Level (85 IRE) full screen
pattern to Video input.
32LB2R-ZH, 37LB2R-ZH, 42LB2R-ZH: AV3/AV4 (Input 50Hz)
32LB2R-ZH, 37LB2R-ZH, 42LB2R-ZH: AV3/AV4 (Input 50Hz)
4) Press the FRONT-AV KEY on R/C for converting input
mode.
5) Set the PSM to Standard mode in Picture menu.
6) Enter the White Balance adjustment mode by pressing the
6) Enter the White Balance adjustment mode by pressing the
INSTART key twice(White Balance) on R/C.
7) 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.
8) Adjust Only High Light with R Gain/B Gain using
F
/
G
(VOL
+/-) key on R/C.
9) Adjust it until color coordination becomes as below.
X-axis : 0.283±0.003
Y-axis : 0.298±0.003
Y-axis : 0.298±0.003
(R/G/B gain and R/G/B offset Default values are different in
according to using module )
10) Adjust High light with R/B Gain.
6.2 Auto white Balance (AV)
1) LPL Module
2) AUO Module
- 13 -
White balance
ZH(AV3), TH(AV1)
MH(VIDEO1)
MSPG925FA
216 Level (85IRE)
Model : 202
Model : 201
Full screen pattern
• Pal Video
• NTSC Video
<Fig. 3>
216 Level(85IRE)
Command1 Command2 Set ID
Data
Min
Max
Input Select
XB
B
00
00h
90h
R-Gain
J
A
00
00h
E0h
G-Gain
J
B
00
00h
E0h
B-Gain
J
C
00
00h
E0h
R-Offset
J
D
00
00h
90h
G-Offset
J
E
00
00h
90h
B-Offset
J
F
00
00h
90h
Command1 Command2 Set ID
Data
Min
Max
Input Select
XB
B
00
00h
90h
R-Gain
J
A
00
00h
E0h
G-Gain
J
B
00
00h
E0h
B-Gain
J
C
00
00h
E0h
R-Offset
J
D
00
00h
90h
G-Offset
J
E
00
00h
90h
B-Offset
J
F
00
00h
90h
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