HP PageWriter XL M1705B Service Manual page 155

4. Disconnect the motor and sensor connectors.
5. Remove the two screws (see Figure 7-6) that attach the plastic
gear housing to the cardiograph.
Figure 7-6. Printer Drive and Keyboard Ground Plane Screw Locations.
6. Carefully pry up the plastic gear housing to free it from the
alignment pins on the cardiograph. If the gears fall off their
shafts, refer to the first step in the printer drive replacement
procedure that follows.
7-8 Removal and Replacement