Lexmark X464de Service Manual - Page 93

7014-xxx Tray 2 service check FRU Tray 2 Action Turn the printer off. Separate the printer from Tray 2. Turn the printer on and check the voltages on connector J28 on the engine board. Pins 1, 4: 3.3 V Pin 2: 24 V Pin 6: Ground If the voltages are incorrent, then replace the engine board. If the voltages are correct, then try using Tray 2 again. If the printer error persists, then replace Tray 2. 840.xx service check Step 1 2 3 4 5 Questions / actions Yes POR the machine into configuration mode. Go to the disable scanner menu item. See "Disable Scanner" on page 3-9. Touch "Enable ADF/FB -Enabled and press Submit to save the change. POR the MFP to operating mode. Try running a copy from the ADF and flatbed. Go to step 2. Did the 840.xx error recur? Re-enter Configuration mode, scroll to and select the Disable Scanner menu item. Does the screen display ADF Disabled or Auto Disabled? Check the ADF cable connections on the ADF relay card and connector J17 on the controller board. Also inspect the cable connections on J28, J12, 13 and J30 on the controller board. Go to step 3. Go to step 5. Are the connections properly connected? Properly connect the connections on the ADF relay card and controller board. POR the machine into configuration mode. Go to the disable scanner menu item. See "Disable Scanner" on page 3-9. Touch "Enable ADF/FB -Enabled and press Submit to save the change. POR the MFP to operating mode. Try running a copy from the ADF and flatbed. Go to step 5. Did the 840.xx error recur? Check the continuity on the ADF cable. Go to step 7 Is there continuity? No Stop. Problem resolved. Go to step 8. Go to step 4. Stop. Problem solved. Go to step 6. Diagnostics information 2-55