LG HS200 Service Manual page 8

8-3. Adjustment
(1) Verify the white chromaticity diagram of normal state
before adjustment of White Balance.
- Verify whether white chromaticity diagram satisfied the
product standard in 9. SEQUENCE CONTROL in 'In
Start' mode. Change the SEQUENCE INDEX (0~4) if
deviates from product standard.
Color Coordinate
x
y
Sequence Index
0
1
2
3
4
(2) Connect as in the equipment composition diagram then
enter into adjustment mode by selecting "ADJ" on the
remote control..
(3) Execute adjustment by pressing the right direction key on
"6. AUTO CCA " (Fig.8-3)
(However, carry out a heat run on the set for 5 minutes
before adjustment)
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Only for training and service purposes
Min Typ Max
0.260 0.290 0.320 x=0.290±0.03
0.300 0.330 0.360 y=0.330±0.03
Red duty Green Duty Blue Duty
31% 50%
25% 50%
27% 50%
29% 50%
33% 50%
(4) Message as shown below can be verified after completion
of adjustment, and readjust following the (1)(2) step if
"Fail" occurs.
"OK" : White Balance Process Successful and Warm, Cool
"Fail" : White Balance Process Failure -> Execute
"Warm Fail" : White Balance Process Successful and
"Cool Fail" : White Balance Process Successful and Cool
"Warm and Cool Fail" : White Balance Process Successful,
(5) For verification of White Balance adjustment results, press
Instart Key and enter Manual CCA. (Fig.8-3-2)
19%
25%
23%
21%
17%
<Fig.8-3-1>
Fig.8-3-1Selection Category on INSTART Menu
Fig.8-3-2 Menu after entering Manual CCA
(6) Change the Mode of Color Temp to COOL, Warm and
switch the Mode of CL200 to Temp to check whether the
each Mode has been adjusted to comply with the
specification.
- Warm Mode : x=0.313±0.004, y=0.326±0.004
- Cool Mode : x=0.283±0.004, y=0.297±0.004
* LED Current Initialization Method.
- Adjust the Green LED value of Normal from 7. LED DC
Control of ADJ mode to a default value 186
- 8 -
chromaticity diagram is within the target.
readjustment.
Warm chromaticity diagram deviated more
than 0.005 from the target.
chromaticity diagram deviated more than
0.005 from the target.
and both
chromaticity diagrams deviated
more than 0.005 from the target.
Warm can Cool
<Fig.8-3-2>
LGE Internal Use Only