Before Adjustment - Christie LX1750C Service Manual

Optical Adjustment

Before adjustment

1. Each adjustment requires hex wrenches and slot screwdrivers.
2. Set the motorized lens shift to the center position (horizontal and vertical) with LENS SHIFT Button.
Press and hold the LENS SHIFT button for more than 5 seconds, the lens will move to the center position auto-
matically.
3. When adjusting optical components adjustments, using Standard Zoom Lens is recommended.
4. When adjusting the optical center adjustment, follow the following procedure.
a) Disconnect the connectors K22C, K8E, K88F, K25Y and
three flexible cables of the LCD panels on the main
board. (Do not touch the electrode of flexible cables.)
When removing the connector K28C, the LED indica-
tors are not lighting, so remove the LED board from the
cabinet top without disconnecting the cable .
b) As shown in a figure right, set the main board to the
upright position.
c) Remove the shutter assy on the prism/LCD panel assy.
d) Replace the polarized glass unit with the adjustment
tool. This Adjustment tool can be ordered as a service
part. The part no. is shown on next page.
e) Press and hold the AUTO PC ADJ. button on the con-
trol panel and then turn the Mains switch on. The LED
indicators will flash twice to indicate that the mode is in
the optical adjustment mode. Then turn on the projector
by pressing the ON/STAND BY button.
CAUTION: Do not short main board or LED board with the
chassis. Protect main and LED boards with
necessary isolation materials from shorting.
To select the internal test pattern
1
Press the MENU button.
2
Select the "Test pattern" from the "Setting" menu.
3
Press the SELECT button. The test pattern menu appears
on the screen.
4
Select a pattern name and press SELECT button.
To cancel the test pattern, press any of the buttons.
CAUTION:
When adjusting the optical components, do not insert any materials into the
optical block for blocking the light. Or the optical block may be damaged by
overheating or scratching the parts.
Open upper way.
Test pattern
Color
Graduation 1
Graduation 2
Graduation 3
Graduation 4
All white
All black
Cross
-60-
Main board
LX1750 Service Manual
020-000643-01 Rev.1 (01-2014)