Removal Of The Ir (F) Pcb Assy,Coolingfan (Exhaust) And Cooling Fan (Power); Removal Of The Dc Out Pcb Assy; Removal Of The Lens Unit - Mitsubishi Electric SD420U Service Manual

7. Removal of the IR(F) PCB
ASSY,cooling fan (exhaust) and
cooling fan (power)
1. Remove the top cover and front ASSY following "1.
Removal of the top cover and front ASSY."
2. Remove the two screws (a) as shown in Fig. 2-7-1.
3. Remove the IR (F) PCB ASSY as shown in Fig. 2-7-1.
4. Remove the two screws (b) as shown in Fig. 2-7-1.
5. Remove the cooling fan (exhaust) as shown in Fig. 2-7-
1.
6. Remove the two screws (c) as shown in Fig. 2-7-1.
7. Remove the cooling fan (power) as shown in Fig. 2-7-1.
8. Removal of the DC OUT PCB
ASSY and IR(R) PCB ASSY
1. Remove the top cover and front ASSY following "1.
Removal of the top cover and front ASSY."
2. Remove the MAIN PCB ASSY following "2. Removal of
the MAIN PCB ASSY."
3. Remove the ballast ASSY following "3. Removal of the
lamp power unit."
4. Remove the back ASSY following "4. Removal of the
optical unit."
5. Remove the two screws (a) as shown in Fig. 2-8-1.
6. Remove the DC OUT PCB ASSY as shown in Fig. 2-8-
1.
7. Remove the two screws (b) as shown in Fig. 2-8-1.
8. Remove the IR (R) PCB ASSY as shown in Fig. 2-8-1.

9. Removal of the lens unit

1. Remove the top cover and front ASSY following "1.
Removal of the top cover and front ASSY."
2. Remove the MAIN PCB ASSY following "2. Removal of
the MAIN PCB ASSY."
3. Remove the ballast ASSY following "3. Removal of the
lamp power unit."
4. Remove the optical unit following "4. Removal of the
optical unit."
5. Remove the four screws (a) as shown in Fig. 2-9-1.
6. Remove the lens unit as shown in Fig. 2-9-1.
a
a
IR(F) PCB
ASSY
DC OUT
PCB ASSY
a
- 12 -
b
b
Cooling fan
(exhaust)
Fig. 2-7-1
IR(R) PCB
ASSY
b
a
a
Fig. 2-8-1
a
a
a
Lens unit
Fig. 2-9-1
Cooling fan
(power)
C C
b