XOCECO LC22K9, Руководство по обслуживанию

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3
Instructions on adjusting and testing
The adjustment of LC22K9 excludes 2.30
2.1 Adjusting and calibrating the equipment
PM 5518(video frequency signal generator), K-7253(VGA signal generator),CA210(white balancer)
2.2 Adjustment and calibration procedure
2.3 Adjusting and calibrating the monitor board
Place the monitor board on the testing jig, turn on the power supply and switch on the set to see if it
is normal.
2.3.1 Adjusting the white balance of monitor board
Push the “Rest” key and “OK” key under the cover of the remote control set, repeat the push, enter
the factory menu. Select factory reset to initialize the MONITOR
Input the DVI signal to monitor board. (K-7253 time339 pattern 630 8 gray degree signals, input the
DVI signal to socket with 26 cores of monitor board by way of patch panel). Adjust the intermediate
second and seventh gray degree with CA210 white balancer.
Preset value of R,G,B CUT to
100,and R,G,B DRV to 150,
then, adjust the second gray degree (brightness: about 9nit) by R,G,B
CUT, to set the color coordinates of second gray degree to 270, 283. Adjust R,G,B DRV to set the
color coordinate of seventh gray degree to 270 and 283.
Note
: Because the values of R,G,B CUT and R,G,B DRV directly determines the values of
brightness and contrast at the DVI terminal of monitor board,
the white balance should be
adjusted according to the preset value strictly.
The value after adjusting should be within
+/-10 of the preset value.
2.3.2 Calibrating ADC of Monitor
After finishing the adjustment of 2.3.1, set the VGA signal to 1024X768 60Hz mode. Access the
pane signal and connect it to VGA terminal of monitor. Adjust h port of the picture to make the
picture fully occupy the screen. Enter the factory menu and select items for ADC calibration and
calibrate the ADC according to the indication on the screen.
2.3.3 Adjusting the white balance of monitor:
Input 8 gray degree signals of 1024X768 60Hz mode, push “display” key on the remote control
set, adjust brightness and contrast, to set the brightness of second gray degree to 5nit and
seventh as 400nit.
For the diagram of adjustment and calibration procedure, see diagram 1