Lexmark X264dn Service Manual - Page 81

7013-XXX Flatbed home position service check Step 1 2 3 4 5 6 Questions / actions Yes No POR the MFP. Does the CCD move and return to the home position? Problem solved. Go to step 2. Perform the home position sensor test. See "Scanner Tests" on page 3-17. Is the sensor working properly? Go to step 3. Go to step 5. Check JFBM1 on the controller for proper connection. Is it connected properly? Check pin 1 in JFBM1 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 4. Go to step 5. Properly connect the cable. Replace the controller board. See "Controller board removal" on page 4-13. Ensure that the home position cable (JHS1) is connected. Is the cable connected? Check pin 1 in J1 for voltage. The voltage should measure +5V DC. Pin 2 should be GND. Is voltage present and is it correct? Go to step 6. Replace the flatbed unit. See "Flatbed removal" on page 4-24. Properly connect the cable. Replace the controller board. See "Controller board removal" on page 4-13. Diagnostics information 2-47