2-58 Service Manual
Flatbed home position service check
Step Questions / actions Yes No
1 POR the MFP. Does the CCD move and
return to the home position?
Problem solved. Go to step 2.
2 Perform the home position sensor test. Go
to “Scanner Tests” on page 3-25.
Is the sensor working properly?
Go to step 3. Go to step 5.
3 Check J28 on the controller board for proper
connection.
Is it connected properly?
Go to step 4. Properly connect the cable.
4 Check pin 1 in J28 for voltage. The voltage
is only present when a flatbed copy job is
running. The voltage should measure +24V
AC. Is voltage present?
Go to step 5. Replace the controller
board. Go to “Controller
board removal” on
page 4-16
5 Ensure that the home position cable (J13) is
connected. Is the cable connected?
Go to step 6. Properly connect the cable.
6 Check pin 1 in J13 for voltage. The voltage
should measure +5V DC. Pin 2 should be
GND. Is voltage present and is it correct?
Replace the flatbed unit.
See “Flatbed assembly
removal” on page 4-50.
Replace the controller
board. Go to “Controller
board removal” on
page 4-16.
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