HP DesignJet 250C Service Manual page 80

4 Slightly rotate the motor on its hinge
until the indicated part of the black
plastic is parallel with the side of the
chassis beam.
5 Pull the motor out to the right of the
plotter.
The motor may be stiff.
6 22 Removal and Replacement
Reassembling: There are two springs on
the motor assembly:
D One fits onto the protruding
plastic part on top of the motor.
Position this part inside the
chassis beam.
Beam
Black Plastic
D The other is a flat metal spring
attached underneath the motor.
Position it underneath the
chassis beam.
Also, make sure the belt is correctly
positioned on the grooves of the shaft.
C4699 90000