EH-TW3500/4500/5500 Disassembly and Assembly CONFIDENTIAL
SEIKO EPSON 90 Revision A
3.3.13 Inner EX Duct
1. Remove the Lamp. (p.55)
2. Remove the Side Cover L/Side Cover R. (p.57)
3. Remove the Upper Case (assembly). (p.59)
4. Remove the MA Board (assembly). (p.68)
5. Remove the DR Board (EH-TW4500/5500 series only). (p.73)
6. Remove the Optical Engine (assembly). (p.75)
7. Remove the Lamp Fan. (p.83)
8. Remove the PS Fan. (p.67)
9. Remove the three screws and remove the Fan Holder.
10. Remove the Lamp Fan Duct from the Fan Holder.
11. Remove the Safety Switch from the Inner EX Duct.
12. Remove the screw ( ) and release Lamp Connector.
13. Remove the three screws and remove the Inner EX Duct.
Figure 3-37.
Standard Operation Time 18 Min.
Inner EX Duct
Safety Switch
Lamp
Connector
C.B.P-TITE SCREW,3X10,F/ZB-3C
C.C.P-TITE SCREW,3X8,F/ZN-3C
Fan Holder
Lamp Fan
Duct