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MODELS: WD-60C9 / WD-65C9 / WD-73C9 / WD-60737 / WD-65737 / WD-73737 / WD-82737
WD-65837 / WD-73837 / WD-82837

Figure 2: Duct Assembly (Top View)

DUCT INTERIOR COMPONENTS

1) Figure 3 shows the Duct Interior Components.
2) The Upper Duct must be removed to replace the Lamp Door Switch PWB, Sirocco Fan, Exhaust Fan and
Thermal Sensor (1 screw).
3 ) When replacing the Engine, transfer the Duct Interior Components from old Engine to the new Engine.
Note: There are three Exhaust Fan Holders, one on the top and two on the bottom of the Exhaust Fan.
Note: The Exhaust Fan must be installed so the Label is facing inside the Duct.
Note: The Sirocco Fan must be installed so the Label is facing upwith the Flanges aligned onto the Guide Pins.

Figure 3: Lower Duct (Top View)

OPTICAL ENGINE REPLACEMENT (Continued)

B
Latches
Latch
Latch
SIROCCO FAN
(Label Facing Up)
THERMAL
SENSOR
EXHAUST
FAN
(Behind Lamp Housing)
EXHAUST FAN
HOLDERS (3)
(1 Top - 2 Bottom)
LAMP DOOR
SWITCH
PWB
(Label Facing Inside)
FLANGES Align
Onto GUIDE PINS