Printronix L5000 Series Maintenance Manual page 276

Mechanism initialization
This processing is executed only once, to confirm that there are no errors when
stopped or when the motor is on. However, when an initializing request is received
from the printer, this process is executed again. The ready condition is deactivated
and bit waiting for basic status (bit 4) is cleared to "0", the same as when initializing
after reset starting.
Analog input processing
Analog input data from the paper guide interlock switch (ICIL) and paper size
detector sensor (IPS10–12, IPS20–22) is converted to digital data "H" of "L."
Chattering absorption processing
Input data from the sensors (except for the two motor encoders) is determined by
filter processing of the input port.
Status confirmation processing
Data is detected from the sensors (including motor encoders) and if an error occurs,
abnormality processing is executed.
Confirmation processing of unit of error occurrence
Checks for errors in the order of the unit sequencer section, transport section, lower
level cassette section, and upper level cassette. Based on the results, checks the basic
status error bit (bit 0).
Communication processing
If there is reception data from the printer, it is loaded, command analyzing processing
is executed, and status is returned.
Driving actuators
The actuator is driven to pick up paper and load it to the transfer point, only when the
unit receives a paper supply preparation start command from the printer and is in
paper supply preparation operation.
D–22
Optional Cut Sheet Feeder