5-21 (E)
Digital Cinema Dual System
3. Adjust the sub-projector.
(1) Resetting of the electrical correction of sub-projector
1)
Tap
[Reset]
on the Adjust Distortion screen. (All correction values are reset.)
2)
Tap
[Reset]
on the Electric Shift screen. (H shift and V shift values are reset.)
(2) Adjustment of tilt in the horizontal direction
1) Project the Convergence Adjust Scope test pattern on both main projector and sub-projector.
2) Set the H shift of lens shift block of the sub-projector to “0”.
3) Change the image size (zoom) of the sub-projector from the minimum to the maximum, and
check that the vertical line at the center of the test pattern does not move. (Keep the move within
the level of approx. 0.5% of the screen width.)
4) Adjust the position of the sub-projector so that the vertical center line of the test pattern of the
sub-projector is aligned with the lens center of the sub-projector.
At that time, adjust the horizontal rotating position of the sub-projector to prevent the occurrence
of the horizontal keystone.
In this stage, the two projectors are placed in parallel with each other when viewed from above.
5) Adjust the zoom so that the image size in the horizontal direction is kept within the screen width.
Fix the sub-projector position in this state.
(3) Adjustment of tilt in the vertical direction
1) Adjust the height of sub-projector feet so that the vertical lines of the test pattern of the two
projectors are parallel with each other. (This is performed for correcting the tilt of sub-projector
with respect to the main projector in the horizontal direction.)
(4) Mechanical adjustment of vertical and horizontal center line
1) Adjust the H shift of the lens shift block, feet height and zoom of the sub-projector so that the
vertical center line of the test pattern of the sub-projector is overlapped with the vertical center
line of the main projector.
Fix the H shift of the lens shift block of the sub-projector in this state.
2) Set the test pattern of the sub-projector to OFF.
3) Register the setting in the function memory for Scope in the sub-projector.
(5) Registration of function for Flat image
1) Call the setting for Flat of the main projector registered in 2-(3)-7) from the function memory.
2) Project the Convergence Adjust Flat test pattern from the main projector and sub-projector.
3) Adjust the V shift of the lens shift block and zoom of the sub-projector so that the horizontal center line of
the test pattern of the sub-projector is overlapped with the horizontal center line of the main projector.
4) Adjust the horizontal center position with the H shift of “Electric Shift” of the sub-projector.
5) Check that the upper and lower portions of the Flat image projected on the 3D filter of the sub-
projector are not obstructed by the filter frame. If obstructed, adjust the distance by moving the
filter bracket back and forth. (Refer to Section 2-8-4.)
6) Adjust the lens focus of the sub-projector.
7) Set the test pattern of the sub-projector to OFF.
8) Register the setting in the function memory for Flat in the sub-projector.
Main projector
Sub-projector
Top view
Screen
