Diagnostic information 2-79
5060-4xx
Displayed with no media in MPF
A 250 Paper Jam indicates that the MPF tried to feed a sheet of media from the MPF tray. A 250 Paper Jam may
occur when there is no paper in the MPF, MPF is selected as the paper source, or the MPF sensor is
malfunctioning. If media is in the MPF it may feed normally with no 250 Paper Jam even though the sensor is
malfunctioning.
Step Action and questions Yes No
1 Enter the Diagnostics Menu. Select INPUT TRAY
TESTS, Sensor Test, and MP Feeder. Manually
actuate the MPF sensor by moving the paper flag in the
MPF.
Does the test pass?
Replace the MPF
assembly.
Go to step 2
2
Make sure that the MPF sensor cable from the system
board is correctly installed at J21 on the system board.
Is the cable correctly installed?
Go to step 3 Install the cable
correctly
3
Check the cable connection between the MPF sensor
cable and the sensor. Check that the sensor is
snapped into the bracket.
Is the connection good between the two cables?
Go to step 4 Install the cable
correctly
4
Disconnect the sensor cable from J21 on the system
board.
Measure the following voltages on J21, being careful
not to short any adjacent pins in the connector. All
voltages are approximate values.
Are the voltages correct?
Go to step 5 Replace the
“System board”
on page 4-72
5
Check continuity of the sensor cable that is between
the system board and MPF assembly.
Is there continuity?
Replace the
sensor assembly
Replace the
sensor cable
assembly
Connector pin Voltage
J21-11 0 V dc
J21-12 +5 V dc
J21-13 +5 V dc
J21-14 +5 V dc
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