Hitachi CP-X2520 Service Manual page 5

4-2 AIR SENSOR adjustment
When you replaced the PWB assembly MAIN, the
PWB assembly SENSOR A, the PWB assembly
SENSOR B, the B panel fan or the RG panel fan,
make sure to carry out this adjustment after
completing reassembling the projector.
A-SENS dialog
A-SENS >>EXE 1: 2:
4-3 Flicker adjustment (V.COM adjustment)
Test pattern for the adjustment
128/255
4-4 Ghost adjustment
Test pattern for the adjustment
30%
30%
0/255
112/255
CP-X2520 ( M2-25ED ) / CP-X3020 ( M2-30ED )
3: 4: END
Adjustment procedure
1. Open the FACTORY MENU and select the VID-AD.
2. Press the [ ] (right) button, and then use the [ ]
(up) or [ ] (down) button to display the A-SENS
dialog.
3. Press the [ ] (right) button. The automatic ad-
justment program runs.
The adjustment finishes and the END is high-
lighted in about 5 minutes.
Adjustment procedure
1. Use DAC-P - V.COM - R: in the FACTORY
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.)
2. In the same way, use DAC-P - V.COM-G: in the
FACTORY MENU to adjust the G color flicker.
3. In the same way, use DAC-P - V.COM-B: in the
FACTORY MENU to adjust the B color flicker.
NOTE: The test pattern shown on the left some-
times has a horizontal line across the screen.
Adjustment procedure
1. Make this adjustment after completing the ad-
justment in the section 4-3.
Set 0 to the GHOST R, G, B in OPTION-SERVICE-
GHOST Menu.
2. Use DAC-P - GHOST - R: in the FACTORY MENU
to adjust so that R color ghost is at a minimum.
(Set the adjustment value to default, and then
raise the value. When a ghost appears to the left
of a vertical line, reduce the value by 6 steps.)
3. In the same way, use DAC-P - GHOST-G: in
the FACTORY MENU to adjust so that G color
ghost is at a minimum.
4. In the same way, use DAC-P - GHOST-B: in
the FACTORY MENU to adjust so that B color
ghost is at a minimum.
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