Flatbed Home Position Service Check - Lexmark X46x series Service Manual

7014-xxx

Flatbed home position service check

Step
1 POR the MFP. Does the CCD move and
return to the home position?
2 Perform the home position sensor test. Go
to "Scanner Tests" on page
Is the sensor working properly?
3 Check J28 on the controller board for proper
connection.
Is it connected properly?
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?
5 Ensure that the home position cable (J13) is
connected. Is the cable connected?
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?
2-58
Service Manual
Questions / actions
3-25.
Yes
Problem solved.
Go to step 3.
Go to step 4.
Go to step 5.
Go to step 6.
Replace the flatbed unit.
See "Flatbed assembly
removal" on page 4-50.
No
Go to step 2.
Go to step 5.
Properly connect the cable.
Replace the controller
board. Go to "Controller
board removal" on
page 4-16
Properly connect the cable.
Replace the controller
board. Go to "Controller
board removal" on
page 4-16.