2-50 Service Manual
5061
5
Open the MPF to the horizontal position, and check the
paper path for obstructions.
Is the paper path obstructed?
Clear the
obstruction.
Go to step 6
6
Raise the pick tire off the media, and test the MPF.
Does the pick tire turn?
Go to step 8 Go to step 7
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?
Go to step 8 Replace the MPF
bracket
assembly.
8
Does media jam on the friction buckler? Replace the
friction buckler.
See “Friction
buckler and
buckler housing
removal” on
page 4-40.
Go to step 9
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?
Replace the MPF
assembly.
Go to step 2
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?
Go to step 11 Install the cable
correctly.
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?
Go to step 12 Install the cable
correctly.
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.
Are the voltages correct?
Go to step 13 Replace the
system board.
See “System
board removal”
on page 4-90.
13
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.
Step Actions and questions Yes No
Connector pin Voltage
J10-11 0 V dc
J10-12 +5 V dc
J10-13 +5 V dc
J10-14 +5 V dc
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