Printronix L5000 Series Maintenance Manual page 388

As timing marks pass through the sensor, the ON/OFF state
changes on the engine checker message display.
8–16
Press ³
Press
Press ³
DRUM TRANS. CUTTER
Press
Press
DEVICE CHECK
INPUT SIGNAL
INPUT SIGNAL
TRANSPORT UNIT
INPUT SIGNAL
DRUM ELV. CUTTER
DRUM ENCODER
DRUM ENCODER
LIGHT (OFF, ON)
Engine Checker