Command Operations - Printronix L5000 Series Maintenance Manual

Command Operations

The engine performs the indicated operations upon receiving the following engine
operation request commands from the controller.
Auto-load fan-fold paper
1. Opens the paper output path.
Opens the face gate (opens the transport path to the face-up paper output tray),
and controls the paper output gate to the condition memorized in the fixed
memory.
2. Detects the leading edge of the paper.
Activates the tractor motor, and monitors whether the leading edge of the paper is
detected by the paper back feed sensor (PFBS). If the leading edge of the paper
has not been detected after the encoder counter counts to 4800 (equivalent to 6
inches of transport distance), this is considered to be an error, and the task is
terminated. (The encoder counter counts the number of output pulses of the
encoder from the home position of the tractor motor.)
3. Sends the leading edge of the paper to the transfer point.
Sends the leading edge of the paper to the transfer point after it has been detected
by the paper back feed sensor within the above mentioned count.
4. Stops the tractor motor.
Stops the tractor motor, and transfers to online idling state.
Eject fan-fold paper
1. Checks whether or not there is paper remaining.
Activates the tractor motor, monitors the sensor output, and checks whether or
not there is any paper remaining in the transport pathway. If there is paper
remaining, proceeds to the next step. Otherwise, goes to step 12.
To determine if there is paper within the transport path, the leading edge of the
output paper is detected by the output paper sensor 0 (EPS0) within the time that
it should take to transport the paper from the transfer point to the output paper
sensor 0 (EPS0), after the tractor motor is activated.
2. Activates the transport unit and the fuser unit.
Turns on the main unit feed motor (high-speed side), vacuum fan, pre-heat lamp,
lamp cooling blower, and smoke filter blower.
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Principles of Operation