Roll Units
No. Component Function
1 Bypass Sensor Detects the trailing edge of the cut sheet manually inserted into
the main machine for bypass feed.
2 Pre-Registration Sensor Located at the top of the vertical paper feed path in the main
unit, detects the leading edge of paper roll paper.
3 Paper Release Sensor Controls the raising and lowering of the roll feed roller idle
rollers during paper feed.
4 Roll Unit Exit Sensor Detects the leading edge of the roll paper as it leaves the roll
unit.
5 Roll Paper Feed Clutch Engages and disengages the cam shaft that raises and lowers
the roll feed roller idle rollers in the roll unit. This closes and
opens the nip of the roll feed roller.
6 Roll Paper Feed Motor Drives the roll paper feed roller that feeds the roll paper from
the roll unit.
6. Troubleshooting
748
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