Service Adjustments; Setting The Initial Data; White Balance Adjustment - Sanyo LCD-42K30-HD Service Manual

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 (IC7200) through the IIC Bus Data Line in the chassis, and those
adjustment data are memorized the memory IC (IC8000). Therefore, Main board or the memory IC (IC8000)
is replaced, these data will be disappeared. Readjust should be made. Initial data is provided in the CPU
ROM, when the memory IC (IC8000) 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 electrical 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 100% (in AV mode).
Condition
Picture Mode: STANDARD
Color Temperature: NORMAL
Aging Time: More than 10 minutes
Adjustment
1. Enter the Service Mode.
2. Select "Source ALL" by pressing
3. Set R,G,B value to "FF" by pressing NUMERIC buttons.
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).
Service Mode
Source
Properties:
Date: Red 85
4. Decide one item in three items to a fixed value (For example, let R be fixed value), select item of other 2
colors
(Example, G or B), and adjust to produce a normal black and white picture in highlight areas.
(Note: At this time, Adjust the other 2 colors data less than fixed data.)
5. Exit the Service Mode.
After adjustment, confirm white balance again by normal picture.
14
▲▼ button, and select "Properties White" by pressing ◄► button.
V1.280312UH4B42HD
All
White
Green 85 Blue 85
Red "+" Green "+" Blue "+"
Red "-" Green "-" Blue "-"