HITACHI CPX985W
Manual de Servicio

4. Adjustment
4 - 1 Before adjusting
1. Before starting adjustment, warm up the projector for about 10 minutes. (Blank white) 2.Set Zoom Wide to Max. and project an image a distance of more than 40 inches. 3.Normalizing the video adjustment. (Press the [MENU] button of the Remote control transmitter to display the Setup menu, then press the [RESET] button. And select the [DEFAULT].) *note : The setup menu is not displayed on with no signal. 4. Perform all adjustments from the Adjustment menu. Perform the following operations to display the Adjustment menu. a.Press the [MENU] button of the Remote control transmitter (the Setup menu will appear). b.Next, press the [RESET] button one time. And press the [RESET] button again for 5 seconds or more (the Adjustment menu will appear).

4 - 2 Ghost adjustment
Signals for internal adjustment Adjustment procedure 1. Use DAC-P - GHOST - R: in the Adjustment menu to adjust so that R color ghost is at a minimum. (Set the adjustment value to 16, then raise the value. When a ghost appears to the left of a vertical line, reduce the value by 2 steps.) 2. In the same way, use DAC-P - GHOST-G: in the Adjustment menu to adjust so that G color ghost is at a minimum. 3. In the same way, use DAC-P - GHOST-B: in the Adjustment menu to adjust so that B color ghost is at a minimum.

30%

30%

0/255 bit

112/255 bit

4 - 3 Flicker adjustment (V.COM adjustment)
Signals for internal adjustment Adjustment procedure 1. Make this adjustment after completing the adjustment in 4-2 Ghost adjustment. 2. Use DAC-P - V.COM - R: in the Adjustment menu to adjust so that the flicker at the center of the screen is less than the flicker at the periphery. (When the flicker is about the same across the whole screen, adjust so that the flicker at the center of the screen is somewhat less than elsewhere.) 3. In the same way, use DAC-P - V.COM-G: in the Adjustment menu to adjust the G color flicker. 4. In the same way, use DAC-P - V.COM-B: in the Adjustment menu to adjust the B color flicker.

7