Sanyo LCD-42XF4, Руководство по обслуживанию

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Service Adjustments
CAUTION !
Do not attempt to adjust service adjustments not listed below otherwise it may cause loss of performance and for
correct operation.
■ Setting the Initial data
This adjustment is controlled by the CPU (IC8000) through the IIC Bus Data Line in the chassis, and those adjustment
data are memorized the memory IC (IC8002). Therefore, Main board or the memory IC (IC8002) is replaced, these
data will be disappeared. Readjust should be made. Initial data is provided in the CPU ROM, when the memory IC
(IC8002) is replaced with new one. CPU ROM data is loaded into the memory. Initial data is provided to operating the
monitor basically. For operating the monitor quality performance, further adjustment is required following chassis elec-
trical adjustment.
1. Receive good quality signal.
2. Enter the Service Mode.
3. Confirm data value to be the same as the Service Adjustment Data Table . If it is different, change to correct data
4. Exit the Service Mode.
■ White balance Adjustment
Pattern
White Pattern 80% (in AV mode).
Condition
Picture Mode: STANDARD
Color Temperature: NORMAL
Aging Time: More than 10 minutes
Adjustment
1. Enter the FACTORY MENU.
2. Select WHITE BALANCE by pressing or button, and then pr or - button to enter it.
3. To adjust Red : Press 1 (data value up) and 4 (data value down).
To adjust Green : Press 2 (data value up) and 5 (data value down).
To adjust Blue : Press 3 (data value up) and 6 (data value down).
4. Decide one item in three items to a fixed value (For example, let R be fixed value as following picture.), select
item of other 2 colors (Example, G or B as following picture), and adjust to produce a normal black and white pic-
ture in highlight areas.
(
Note: At this time, Adjust the other 2 colors data less than fixed data.)
5. Exit the FACTORY MENU.
After adjustment, confirm white balance again by normal picture.
White Balance Adjust
Red Green Blue
75 70 71