Do not attempt to adjust service adjustments if not necessary; otherwise it may cause loss of performance and for correct operation.
Setting the Initial dataThis 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 (IC7200). Therefore, Main board or the memory IC (IC7200) is replaced, these data will be disappeared. Readjust should be made. Initial data is provided in the CPU ROM, when the memory IC (IC7200) 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 values. If necessary, change them. See the service adjustment data >>>>
4. Exit the Service Mode.
How
to enter the Service Menu
1. Press and hold the MENU button on Side Controls.
2. Keep pressing the MENU button and press the "1" button on the remote control and the FACTORY MENU will be displayed.
1. Press and hold the MENU button on Side Controls.
2. Keep pressing the MENU button and press the "1" button on the remote control and the FACTORY MENU will be displayed.
Select
“DATA” line by pressing ▲▼
button.
Press
◄► button
to adjust data.
To
exit service mode
Press MENU button to exit service mode.
Note: The all adjusted data in service mode will be memorized into EEPROM automatically.
Note: The all adjusted data in service mode will be memorized into EEPROM automatically.
SMPS (Power board schematic) [Click on the pictures to zoom in]
Inverter
MST 740
White
and Black Balance Adjustment
Picture
Mode: STANDARD
Color Temperature: NORMAL
Pre-heating Time: More than 10 minutes.
Color Temperature: NORMAL
Pre-heating Time: More than 10 minutes.
1. Enter the Service Mode.
2. Select WHITE BALANCE / BLACK BALANCE by pressing ▲▼ button, and press ◄► button to enter.
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)
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.
