LG RU-50PZ61 Service Manual page 12

7. Adjustment of White Balance
7-1. Required Equipment
Color Analyzer (CA-100 or similar product)
7-2. Connection Diagram of Equipment for
Measuring
216 Gray Level
Full Size Pattern
RS-232C Serial Communication
(Fig. 12) White Balance Adjustment
7-3. Adjustment of White Balance
Operate the Zero-calibration of the CA-100, then stick
O
sensor to PDP module surface when you adjust.
For manual adjustment, it is also possible by the following
O
sequence.
(1) Select white pattern of heat-run mode by pressing power
key on the Service Remote Control (S R/C) then allow to
heat run at least 15 minutes.
(2) Supply Gray Pattern (216 Level Full Size Pattern: Signal
level=0.59V±0.03V) signal to VIDEO input. (AV2 Input
60Hz) (Refer to Fig. 12)
(3) Press the FRONT-AV KEY on R/C for converting input
mode.
(4) To adjust, stick sensor to 216 Gray Level Pattern, press
ADJ key twice(White Balance) on S R/C and
R/C to select Red Gain and Green Gain.
Press VOL +, - keys to adjust until color coordination
matches below.
[ 216 Gray level=Signal level 0.59V±0.03V
X; 0.283±0.003, Y; 0.297±0.003
Color Temperature; 9,300°K±500°K
(5) Exit adjustment mode using
8. Auto Component Color Balance
8-1. Required Test Equipment
Pattern Equipment: MSP3240A or similar product
(16 Gray Scale Pattern output(Component output Level:
0.7Vp-p)
ADJUSTMENT INSTRUCTIONS
AV Signal Input
60Hz
Window
MSPG-2100 or
MSTG-5200
D , E on S
A
Key.
8-2. Method of Auto RGB Color Balance
(1) Input RGB Source : Component 480p/576p 16 Gray Scale
Pattern
At this time, only connect the Y signal, not Pb and Pr.
(2) Press ADJ KEY on the S R/C.
(3) Press Vol. + KEY and operate To set.
(4) Auto-RGB OK means completed adjustment.
9. Auto RGB Color Balance
9-1. Required Test Equipment
Pattern Equipment: PC Pattern Generator (VG828, VG854,
801GF, MSP3240A)
(16 Gray Scale Pattern output(RGB output Level: 0.7Vp-p)
9-2. Method of Auto RGB Color Balance
(1) Input RGB Source : 16 Gray Scale Pattern output (RGB
output Level : 0.7Vp-p)
(2) Press ADJ KEY on the S R/C.
(3) Press Vol. + KEY and operate To SET.
(4) Auto-RGB OK means completed adjustment.
(Fig. 13) Auto RGB/ Component Color Balance Test Pattern
10. Auto Adjustment Map(RS-232C)
Type
Baud Rate
115200
Index Cmd1 Cmd2
R Gain
G Gain
Protocol
B Gain
Setting
R Offset
G Offset
B Offset
- 12 -
RF-043A
RS232
Data bit Stop bit
8 1
Data Min Value
j a
00(00)
j b
00(00)
j c
00(00)
j d
00(00)
j e
00(00)
j f
00(00)
Parity
NONE
Max Value
255(FF)
255(FF)
255(FF)
255(FF)
255(FF)
255(FF)