Optical engine / Main board assembly
1. IO cover / IO seal (page 38 "IO cover / IO seal")
2. Focus ring (page 39 "Focus ring")
3. Color wheel (page 40 "Color wheel")
4. Remove the 2 screws to remove the heat sink [A] from the optical engine / main board
assembly [B].
Blower Fan
1. Optical system unit (page 37 "Optical system unit")
3. Replacement and Adjustment
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