3.3  Connecting the Projector
3.3.1  Removing the rear cover
Procedure
Unscrew the three crews on the cover. 1. 
1
Lift up and remove the cover. 2. 
2
To install the rear cover, reverse the previous steps.3. 
1
2
Projection Lens P/N R9832755 R9832753 R9832754 R9832756
Lens Type  Wide Zoom Standard XGA/WXGA Standard WUXGA Long Zoom
Throw Ratio (XGA)  0.99-1.26 1.26-1.58  --- 1.58-3.00
Throw Ratio (WXGA) 1.00-1.28 1.28-1.61 --- 1.60-3.07
Throw Ratio (WUXGA) 0.95-1.22 --- 1.22-1.53  1.52-2.92
Zoom Ratio 1.28X 1.25X 1.25X 1.9X
Lens Specication