LG RD-JT51, Service Manual

Page: 22 / 132

22
4. DMD Panel Alignment
Equipment:
- Pattern Generator
Procedure:
1. Connect power, Video signal into projector.
2. Light on projector
3. Change pattern generator to full white pattern.
4. Watch the image if any pixel lost
5. Change pattern to full black.
6. Watch the image if any pixel lost
7. Change pattern from full black to full white.
8. Watch the image if any pixel can not return
9. Change pattern from full black to full white.
10. Watch the image if any pixel can not return
11. If above 8 step has some pixel lost or can not return, it
’ s DMD chip has pixel defect
12. Change to the Slid Line pattern
13. Watch the image if any pixel lost
14. If above step has some pixel lost, it
’ s conductive rubber has defect or assembly
loosed.
5. Optical Engine Assembly Procedure
Note:
Every operator must check the dust/chip on every optical component before assembly.
No
.
Stop Check Action Review Equipment
Chk Timing Tape of
Color Wheel
Assemble Color
Wheel
Rotate CW Screw Driver(M3) and Jig
fixture for Color Wheel
Assemble
CW_Sensor
Screw Driver(M2) for
CW/Sensor
Assemble UV-IR on
PLT CW Direction of
UV-IR
Assemble PLT CW Screw Driver(M3)
1 Assy Hsg CW
Tape CW FPC and
Sensor FPC
together