HP LASERJET 3800 User Manual
Page 9
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Page 9 of 18
NOTE: If this procedure has been properly followed, in the back of the printer, you will see the 4
white cams that control the movement of developers (see figure below). On the top and bottom
shafts, you can see a black plastic part that has a flag associated with it. The top flag is for the
black cartridge, the bottom flag is for all the color cartridges. Also, note that the white cams are all
at different degrees of rotation. This reduces the force required to drive the motors when turning
the cams. Metal shafts should be oriented with the empty space downwards.
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