Service manual

Ver. 3/00 1-5 Sharp Electronics Corporation
HOW TO CONVERGE THE LCD PANELS (continued)
Step Procedure Ref. #
2. Removal of
body panels.
1. To remove the cabinet, refer to the service manual for the
specific model.
3. Adjustment
of the blue
panel.
1. Supply the projector with a blue and green crosshatch signal
from the pattern generator (on most video signal generators, it
is possible to remove one or more of the 3 colors making up the
crosshatch signal. In this case red must be removed. To do this,
refer to the instructions for the pattern generator).
2. Use the 2mm Hex Wrench to loosen the two hex screws labeled
“Lock Screw d” in fig. 2.
Be sure to leave the lock screws tight enough so that when an
adjustment is made, the panel will stay in that position
until the lock screws are fully tightened after the
completion of all adjustments.
3. Use the 1.27mm hex wrench to adjust the Y axis (up and
down).
4. Use the eccentric cam wrench to adjust the X axis (side to
side).
5. Use the 1.27mm hex wrench to adjust the θZ axis
(tilt).
6. When the blue image is converged within specifications to
the green panel, tighten the two lock screws to secure the
adjustments.
NOTE: Tightening the screws may cause mis-convergence.
If this happens, readjust the affected panel.
fig. 2-1
fig. 2-1
fig. 2-2
fig. 2-2
fig. 2-2
4. Adjustment
of the red panel
1. Supply the projector with a red and green crosshatch signal
from the pattern generator (turn blue off and red on).
2. Repeat same adjustment procedure as the blue panel.
Convergence adjustment is complete.