Cleaning Cycle; Paper Jam Detection - Star Micronics LS-5 SERIES Technical Manual

MAINTENANCE GUIDE

3-5. Cleaning Cycle

A cleaning cycle is performed with power and the CRU switch ON and when printing is completed (except for during
continuous printing).
Cleaning cycles include the following two types:
• Warm up cleaning (when power and the CRU switch are ON)
• Cycle out cleaning (when printing is completed)
In a cleaning cycle, the main motor operates and each output of the HVPS is output in constant timing.
Note 1: A cleaning cycle stops by turning the interlock switch OFF, removing the paper cassette and actuating the exit
sensor. A cleaning cycle resumes by turning the interlock switch ON, mounting a paper cassette, and turning
power ON.
Note 2: Warm up cleaning is performed only in the on-line mode.
Note 3: Completion of both warm up cleaning and fuser warm up causes warm up of the printer to complete.

3-6. Paper Jam Detection

To detect presence of the paper and whether or not the paper has been normally fed, the following paper sensors are
provided:
• Regi. Sensor
• Exit Sensor
The MCU PCB determines whether paper is jammed by checking whether paper is present or absent at the sensor at times
stored in the memory. If it detects a jam, the MCU PCB immediately stops printing, and send a signal to the main logic
board to notify the jam. The main logic board command the control panel to display the error message "PAPER
JAMMING"
The MCU PCB detects a jam in any of the following conditions:
• Inlet chute haste jam
After the feed solenoid or the pick up solenoid is ON, the paper reach the regi. sensor within the required time (E2-
1).
• Inlet chute delay jam
After the feed solenoid or the pick up solenoid is ON, the paper does not reach the regi. sensor within the required time
(E2-2).
• Exit roll delay jam
After the regi. sensor detects the leading edge of the paper, the paper does not reach the exit sensor within the required
time (E3).
• Exit roll stationary jam
After the regi. sensor detects the leading edge of the paper, the paper does not clear the exit sensor within the required
time (E4).
• Remaining jam
After power is switch ON, and the printer delivers automatically to the tray, the paper remains at the each paper sensor.
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