Removal Of The Dmd Pcb Assy - Mitsubishi Electric XD8100U Service Manual

28.Removal of the DMD PCB ASSY

1. Remove the top cover ASSY according to "1. Removal of
the lens ASSY, zoom, focus motor ASSY".
2. Remove the CW cover unit according to "2. Removal of
the color wheel ASSY".
3. Remove the fi lter cover unit according to "3. Removal of
the ACF SENSOR PCB ASSY".
4. Remove the top case ASSY according to "4. Removal of
the exhaust fan (front)".
5. Remove the main top shield according to "5. Removal of
the lamp fan 1".
6. Remove the terminal ASSY according to "12. Removal of
the KEY PCB ASSY".
7. Remove the main terminal ASSY according to "13. Re-
moval of the main terminal ASSY".
8. Remove the FORMATTER PCB ASSY according to "17.
Removal of the FORMATTER PCB ASSY".
9. Remove the holder power off according to "18. Removal
of the DRCT OFF PCB ASSY".
10. Remove the DMD fan according to "19. Removal of the
DMD fan".
11. Remove the optical unit according to "23. Removal of the
optical unit".
12. Remove the four screws (a), two screws (b) as shown in
Fig. 3-22.
13. Remove the heat pipe ASSY, spring, back plate, insulat-
ing sheet as shown in Fig. 3-22.
14. Remove the four screws (c) and DMD PCB ASSY as
shown in Fig. 3-22.
29.Removal of the DMD chip
1. Remove the top cover ASSY according to "1. Removal of
the lens ASSY, zoom, focus motor ASSY".
2. Remove the CW cover unit according to "2. Removal of
the color wheel ASSY".
3. Remove the fi lter cover unit according to "3. Removal of
the ACF SENSOR PCB ASSY".
4. Remove the top case ASSY according to "4. Removal of
the exhaust fan (front)".
5. Remove the main top shield according to "5. Removal of
the lamp fan 1".
6. Remove the terminal ASSY according to "12. Removal of
the KEY PCB ASSY".
7. Remove the main terminal ASSY according to "13. Re-
moval of the main terminal ASSY".
8. Remove the FORMATTER PCB ASSY according to "17.
Removal of the FORMATTER PCB ASSY".
9. Remove the holder power off according to "18. Removal
of the DRCT OFF PCB ASSY".
10. Remove the DMD fan according to "19. Removal of the
DMD fan".
11. Remove the optical unit according to "23. Removal of the
optical unit".
12. Remove the DMD PCB ASSY according to "28. Removal
of the DMD PCB ASSY".
13. Remove the C spring ASSY and radiator sheet as shown
in Fig. 3-22.
14. Remove the DMD chip as shown in Fig. 3-22.
DMD chip
Radiator sheet
Insulating
sheet
Back plate
Heat pipe ASSY
- 38 -
DMD PCB ASSY
C spring ASSY
b
x2
a
x
4
Spring
Fig. 3-22
c
x4