Sensor Functions - Xerox Phaser 7400 Service Manual

Sensor Functions

The following table lists the function of each sensor.
Sensor Functions
Sensor
Top Output Tray
Stack Full Sensor
Side Output Tray
Stack Full Sensor
Side Output Tray
Detect Sensor
Job Offset Home
Position Sensor
Job Offset Trailing
Edge Sensor
Top Cover Interlock
Door A Interlock
Door B Detect
Door C Detect
Door D Detect
Door E Detect
Waste Toner
Reservoir Detect
Switch
Fuser Exit Sensor
Fuser Temperature
Media Slack Sensor Detects media slack at the Fuser entrance.
Media Thickness
Sensor
Temperature/
Humidity Sensor
Tray 1 (MPT) Feed-
Out Sensor #1
Tray 1 (MPT) No
Paper Sensor
Tray 1 (MPT) Level
Sensor
Theory of Operation
Function
Detects the Top Output Tray stack height.
Detects the Side Output Tray stack height.
Detects whether the Side Output Tray is open or
closed.
Detects the position of the Job Offset carriage.
Detects the trailing edge of the media for the Offset
carriage.
Detects the position of the Top Cover.
Detects the position of Door A.
Detects the position of Door B.
Detects the position of Door C for Trays 3 ~ 6.
Detects the position of Door D.
Detects the position of Door E.
Detects the presence of the Waste Toner Reservoir.
Detects media at the Fuser Exit.
Monitors the Fuser process temperature.
Adjusts print parameters according to media
thickness.
Measures environmental conditions to calculate the
optimal transfer voltage.
Detects media leaving the Feed Rollers.
Detects the absence of media in the tray.
Detects the Tray 1 (MPT) media supply.
Sensor State
On: not full
Off: full
On: not full
Off: full
On: open
Off: closed
On: not home
Off: home
On: media present
Off: media absent
On: open
Off: closed
On: open
Off: closed
On: open
Off: closed
On: open
Off: closed
On: open
Off: closed
On: open
Off: closed
On: present
Off: absent
On: media present
Off: media absent
Reference voltage
On: slack
Off: no slack
Reference voltage
Reference voltage
On: media present
Off: media absent
On: media present
Off: media absent
On: media present
Off: media absent
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