Sharp XG-MB67X (serv.man11) Service Manual ▷ View online
XG-MB67X
6 – 1
XG-MB67X
Service Manual
CHAPTER 6.
THE OPTICAL UNIT OUTLINE
[1] THE OPTICAL UNIT OUTLINE
Layout for proper setup of the optical components and parts (top view)
(Schematic diagram)
Item
Function
Lamp
Light source. DC high-pressure mercury lamp.
UV/IR cut filter (UV GLASS)
Filters out harmful UV and IR rays from the lamp.
Color wheel
Splits light from the light source into R, G, B and W through a color filter.
Rod (ROD INTEGRATOR)
Assures uniform light ray.
Illumination lens
(ILLUMINATION LENS 1, 2)
(ILLUMINATION LENS 1, 2)
Focus light from the rod on DMD.
Reflection mirror
Reflects light from the illumination lenses toward DMD.
Condencer Lens
(PLASTIC LENS)
(PLASTIC LENS)
Condenses the light from the reflection mirror to the DMD and the pupil of the projection lens.
DMD
Turns the internal micromirror ON/OFF at the rate of color component of each dot of the input source
to reflect light.
to reflect light.
Projection lens
Enlarges light from DMD and projects it on a screen.
DMD
Plastic Lens
Rod Integrator
Lamp
Reflection
mirror
Color wheel
Illumination lens 2
Projection lens
Illumination lens 1
UV Glass
XG-MB67X
6 – 2
If shading shown in Figure 1 appears on the screen after replacing DMD, turn the adjustment screw of the optical engine to adjust the lighting area of
DMD.
DMD.
1. Loosen the adjustment lever fixing screw
. After adjusting the lighting area with the adjustment lever
, tighten the adjustment lever fixing
screw .
When mounting DMD, tighten the 4 screws evenly.
1
2
1
Fig. 1
Shading
Tightening order: 1
2
3
4
Screw torque: 0.44 ± 0.05 N·m
Display
