Minolta EP1080 Service Manual page 121

34
MISFEED DETECTION
A paper misfeed, transport failure, or a separation failure is detected by five
sensors located at critical points along the paper path.
1. Types of Misfeed Detection
1) Take-up failure detection
The detection circuit is enabled for a period from the start of Paper
Take-Up Rolls to the activation of Paper Take-Up Sensor.
2) Trailing edge detection
The detection circuit is enabled for a period from the activation to
deactivation of the Paper Take-Up Sensor.
3) Leading edge detection by Transport Roller Sensor
The detection circuit is enabled for a period from the activation of
Paper Take-Up Sensor to the activation of Transport Roller Sensor.
4) Trailing edge detection by Transport Roller Sensor
The detection circuit is enabled for a period from the input of a
TRON signal to the deactivation of Transport Roller Sensor.
5) Leading edge detection by Paper Leading Edge Detecting
Sensor
The detection circuit is enabled for a period from the activation of
Transport Roller Sensor to the activation of Paper Leading Edge
Detecting Sensor.
6) Trailing edge detection by Paper Leading Edge Detecting Sensor
The detection circuit is enabled for a period from the deactivation of
Transport Roller Sensor to the deactivation of Paper Leading Edge
Detecting Sensor.
7) Leading edge detection by Paper Exit Sensor
The detection circuit is enabled for a period from the input of a
TRON signal to the activation of Paper Exit Sensor.
8) Trailing edge detection by Paper Exit Sensor
The detection circuit is enabled for a period from the deactivation of
Paper Leading Edge Detecting Sensor to the deactivation of Paper
Exit Sensor.
Paper Exit
Sensor PC53
Paper Leading Edge
Detecting Sensor PC54
Transport Roller
Sensor PC51
1st Drawer Paper
Take-Up Sensor PC55
2nd Drawer Paper
Take-Up Sensor PC56
M-95