HP Designjet 250c Service Manual - Page 47

12 Checks the right edge of the media for skew (misalignment). (The loading process fails if the skew is greater than the allowed limits.) 13 Moves the sheet to the printing position and resets the mediaĆaxis servo position. 330 350C Roll Media When a rollĆfeed assembly is installed on the DesignJet 330 and 350C roll media can be used. The rollĆfeed assembly consists of: D A rollĆfeed frame D A spindle D Two media stops D A builtĆin cutter The rollĆfeed assembly is installed below the sheet media entry path, to allow the ease of loading for sheet media. When roll media is loaded into the plotter, it is passed around a diverter roll, which optimizes the infeed path to the plotter. Once a plot is completed, the builtĆin cutter is manually slid across the paper to cut the plot from the roll. For further information ' User's Guide, chapter 2. Removing Static Charge from the Media An antiĆstatic brush located under the entry platen prevents static charge from building up on the media. A charge can cause the media to stick to itself and jam the plotter. Gripping the Media When you load the media, it is gripped by the pinchĆarms. There is no pinchĆarm sensor on the DesignJet 230 and 250C but there is one on the DesignJet 330 and 350C. 330 350C PinchĆArm Sensor The pinchĆarm sensor is a switch sensor that is attached to the spittoon. It detects the position of the pinchĆarm lever. Linkage, attaching the lever to a cam, causes the cam to release the switch as the pinchĆarms are raised. The pinchĆarm sensor is electrically connected to the main PCA. C4699Ć90000 Functional Overview 5Ć5