H-Tra Section - Lexmark W820 - Optra B/W Laser Printer Service Manual

H-Tra Section

The paper delivered from the printer passes the H-Tra Gate and is transferred into the
H-Tra. Then, the rotation of the H-Tra Feed Roller in the H-Tra transfers the paper toward
the Finisher. Also, during the paper transfer, the rotation of the H-Tra Feed Roller shifts
the paper to the front side, to adjust the skew and registered position.
H-Tra Components
•
The H-Tra Gate Solenoid changes over the H-Tra Gate.
•
Changed over by the H-Tra Gate Solenoid, the H-Tra Gate transfers the paper
toward the H-Tra.
•
Gate opens: When paper is transferred to the H-Tra.
•
Gate closes: When paper is delivered on the printer Face Down Tray (in Duplex
mode)
•
The H-Tra Input Path Sensor monitors paper being transferred from the printer into
the H-Tra.
•
The H-Tra Exit Path Sensor monitors paper passing the H-Tra paper exit.
•
The H-Tra Feed Roller feeds the paper transferred into the H-Tra toward the Finisher.
•
The H-Tra Gate Interlock SW detects H-Tra Gate excessive open state, and cuts off
the power supply.
•
The H-Tra Cover Interlock Sensor detects H-Tra Cover open state.
•
The printer FD Tray Full Sensor detects when the printer Face Down Tray located at
the bottom of H-Tra is full with paper.
4025-Finisher
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Introduction