PRIMA LC40D9
Service Manual

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

3