LG 42PJ250, Service Manual

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- 12 - LGE Internal Use Only Copyright ©2010 LG Electronics Inc. All rights reserved.
Only for training and service purposes
8-2. Connecting Picture of the Measuring
Instrument
(On Automatic control )
Inside PATTERN is used when W/B is controlled. Connect to
auto controller or push control R/C ADJ Key‡ Enter the mode
of White-Balance, the pattern will come out.
8-3. Auto-control interface and directions
(1) Adjust in the place where the influx of light like floodlight
around is blocked. (illumination is less than 10ux).
(2) In case of PDP: Measure and adjust after sticking the
Color Analyzer (CA-100+, CA210 ) to the side of the
module.
In case of LCD: Adhere closely the Color Analyzer
(CA210) to the module less than 10cm distance, keep it
with the surface of the Module and Color Analyzer’s Prove
vertically.(80~100°).
(3) Aging time
1) After aging start, keep the power on (no suspension of
power supply) and heat-run over 5 minutes.
2) In case of PDP, keep white pattern using inside pattern.
3) In case of LCD, using ’no signal’ or ‘full white pattern’ or
the others, check the back light on.
O
Auto adjustment Map(RS-232C)
8-4. Manual white Balance
(1) Press the POWER ON KEY on R/C for adjustment and
heat run over 5 minutes.
(2) Zero Calibrate CA-100+ / CA-210, and when controlling,
stick the sensor to the center of PDP module surface.
(3) Press the ADJ KEY on R/C and enter EZ ASJUST
Select “3.W/B ADJUST” and press ENTER(
V
)
Set test-pattern on and display inside pattern.
(4) Control is carried out on three color temperatures, COOL,
MEDIUM, WARM.(Control is carried out three times)
< Temperature: COOL >
- R-offset / G-offset / B-offset is set to 128
- Control R-Gain and G-Gain.
- Each gain is limited to 192
< Temperature: MEDIUM >
- R-offset / G-offset / B-offset is set to 128
- Control R-Gain and G-Gain.
- Each gain is limited to 192
< Temperature: WARM >
- R-offset / G-offset / B-offset is set to 128
- Control G-Gain and B-Gain.
- Each gain is limited to 192
9. HDCP SETTING
(Not necessary)
Caution: Key is saved in external eeprom.
10. RS-232C
Press In-start key and select 4.Baud Rate menu. Check RS-
232C after changing Baud Rate 115200.
RS-232C COMMAND CENTER
[CMD ID DATA] MIN (DEFAULT) MAX
Cool Mid Warm Cool Mid Warm
R Gain jg Ja jd 00 192 192 192 255
G Gain jh Jb je 00 192 192 192 255
B Gain ji Jc jf00 192 192 192 255
R Cut 128 128 128 255
G Cut 128 128 128 255
B Cut 128 128 128 255