Series 800
Maintenance Manual
Sensors
Page
Rev C
Mar-03
Confidential Information: Not for Distribution.
14
Series 800 Printer Sensors
The Series 800 printers use several sensors to provide feedback to the host system. All power and interface
communications are handled by the Comunications PCB.
Figure 8 Sensor Breakdown and Locations
Paper Low Sensor
A Paper Low Sensor optically senses the number of tickets remaining in the printer’s ticket bucket. The
sensor will detect when the number of tickets reaches below 30-35 tickets. The paper low status will be
reported on the status byte, when a status requested is issued by the host.
Top-of-Form Sensor
A Top of Form Sensor is used to control ticket loading and printing.
Ticket Taken Sensor
A Ticket Taken Sensor is used to determine when customers have actually taken the printed ticket.
Head-Up Switch
A Head Up Switch signals when the thermal printhead assembly has been opened. The Head Up Switch is
located under the printhead and is not visible from the top view.
Void and Reprint (Model 860 only)
The Void and Reprint Sensor verifies the integrity of the ticket barcode.
