HP 250C - Manual (Page 102)

6Ć44 Removal and Replacement C4699Ć90000
Removing the PinchĆArm Lift
Mechanism
1 Remove the drive roller ' page 6Ć41.
2 Little by little, unscrew the camĆjournal
screw on the right side, at the same time
continually pushing the screw in towards
the centerof the plotter, until you feel
that you have pushed the camĆjournal
nut out of the journal.
3 Pull the journal out of the bar cam.
4 Grasp the cam journal on the left side of
the plotter.
5 Reach around to the front of the plotter
and push the top of the barcam slightly
towards the rear of the plotter,
simultaneously pulling the cam journal to
the left, so that the cam can begin to slide
out of the left sideplate.
6 Slide the barcam to the left until it clears
the pinchĆarm assembly you want to
replace.
7 Remove the pinchĆarm assembly and
spring from the chassis.
Take care that the spring does not fall.
Pinch arm
Spring
Bushing
C A U T I O N
Reassembling: See following procedure