HP Designjet 250c Service Manual - Page 102

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 center of the plotter, until you feel that you have pushed the camĆjournal nut out of the journal. 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 bar cam 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. 3 Pull the journal out of the bar cam. 6 Slide the bar cam 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. Bushing Spring Pinch arm CAUTION Reassembling: See following procedure 6Ć44 Removal and Replacement C4699Ć90000