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5061
Step
Actions and questions
5
Open the MPF to the horizontal position, and check the
paper path for obstructions.
Is the paper path obstructed?
6
Raise the pick tire off the media, and test the MPF.
Does the pick tire turn?
7
Open the lower jam access door, move the MPF
bracket assembly gear to the lowest position and test
the MPF.
Does the MPF bracket assembly rise and engage the
gear?
8
Does media jam on the friction buckler?
9
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?
10
Make sure that the MPF sensor cable from the system
board is correctly installed at J10 on the system board.
Is the cable correctly installed?
11
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?
12
Disconnect the sensor cable from J10 on the system
board.
Measure the following voltages on J10, being careful
not to short any adjacent pins in the connector. All
voltages are approximate values.
Connector pin Voltage
J10-11
J10-12
J10-13
J10-14
Are the voltages correct?
13
Check continuity of the sensor cable that is between
the system board and MPF assembly.
Is there continuity?
2-48
Service Manual
0 V dc
+5 V dc
+5 V dc
+5 V dc
Yes
No
Clear the
Go to step 6
obstruction.
Go to step 8
Go to step 7
Go to step 8
Replace the MPF
bracket
assembly.
Replace the
Go to step 9
friction buckler.
See
"Friction
buckler and
buckler housing
removal" on
page
4-40.
Replace the MPF
Go to step 2
assembly.
Go to step 11
Install the cable
correctly.
Go to step 12
Install the cable
correctly.
Go to step 13
Replace the
system board.
See
board removal"
on page
Replace the
Replace the
sensor assembly.
sensor cable
assembly.
"System
4-89.
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