SECTION 4
MEASUREMENTS & ADJUSTMENTS
48
Print Engine Sensors
There are two media sensors within the feed path of the print engine that are used to monitor paper
entering and exiting the print engine area.
There is also a Margin sensor in the paper feed path, but this sensor is not active (not used).
Measurement: Use the Toolbox utility to view the condition of the Print Engine Sensors. You can use
the information provided on the User Interface Menu or in the Service Menus under Scan Sensors.
Entry Sensor
The entry sensor is an interruptive sensor. It consists of a receiver
(below) and a transmitter (above).
When nothing is in this sensor the sensor should read open
(Toolbox shows “Paperpath: Entry: No”) .
If paper breaks this sensor beam, the sensor should read interrupted
(Toolbox shows “Paperpath: Entry: Yes”).
Entry Sensor Test: (viewed in Toolbox, User Interface Menu)
Paperpath: Entry: No = interrupted (paper present)
Paperpath: Entry: Yes = open (no paper)
Exit Sensor
The exit sensor is a reflective sensor. It consists of a single device
located below the feed deck. It emits light that is reflected off the
bottom side of the media and back to the sensor.
When nothing is above this sensor area the sensor should read open
(Toolbox shows “Paperpath: Exit: No”).
If paper or something reflective is positioned above the sensor area the sensor should read interrupted
(Toolbox shows “Paperpath: Exit: Yes”).
Exit Sensor Test: (viewed in Toolbox, User Interface Menu)
Paperpath: Exit: No = interrupted (paper present)
Paperpath: Exit: Yes = open (no paper)
Troubleshooting Tip: If these sensors are always reading interrupted (Yes), try cleaning them.
Cleaning Note: Media sensors should be cleaned using compressed air and a soft bristled brush.
To avoid splattering ink through-out the print engine; do NOT blow air into the capping station or onto
the wiper roller. If cleaning does not cure issue, as a last effort before replacement, you can try to clean
with a damp cloth or cotton swab.
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