• Code: 840.01, 840.02, 840.03
• Description: The scanner is disabled and can’t be used.
• Remedy: Step 1 POR the machine into Configuration menu > Disable Scanner. From there, select Enabled to change the setting to re-enable the scanner module and then save the setting. POR the MFP to operating mode. Try running a copy from the ADF and flatbed. Did the 840.xx error reoccur? Go to step 2. The problem is solved.
  Step 2 Re.enter the Configuration mode, and scroll to and select the Disable Scanner menu item. Does the screen display ADF disabled or Auto Disabled? Go to step 3. Go to step 8.
  Step 3 Check the ADF cable connections on the ADF relay card and connector JADF1 on the controller board. Also inspect the cable connections JHOME1, JFBM1, JPLEN1, and JCIS1 on the controller board. Are the connections properly connected? Go to step 5. Go to step 4.
  Step 4 Properly connect the connections on the ADF relay card and controller board. POR the machine into Configuration menu > Disable Scanner. From there, select Enabled to change the setting to re-enable the scanner module and then save the setting. POR the MFP to operating mode. Try running a copy from the ADF and flatbed. Did the 840.xx error reoccur? Go to step 5. The problem is solved.
  Step 5 Check the continuity on the ADF cable. Is there continuity? Go to step 7. Go to step 6.
  Step 6 Replace the ADF cable. POR the machine into Configuration menu > Disable Scanner. From there, select Enabled to change the setting to re-enable the scanner module and then save the setting. POR the MFP to operating mode. Try running a copy from the ADF and flatbed. Did the 840.xx error reoccur? Go to step 7. The problem is solved.
  Step 7 Replace the ADF unit. See “ADF unit removal”. POR the machine into Configuration menu > Disable Scanner. From there, select Enabled to change the setting to re-enable the scanner module and then save the setting. POR the MFP to operating mode. Run a copy from the flatbed. Did the 840.xx error reoccur? Go to step 8. The problem is solved.
  Step 8 Inspect JFBM1, JHOME1 and JCIS1 on the controller board. Are they properly connected? Go to step 10. Go to step 9.
  Step 9 Properly connect all the connections. Did the 840.xx error reoccur? The problem is solved. Go to step 10.
  Step 10 Replace the flatbed unit. See “Flatbed assembly removal”. POR the machine into Configuration menu > Disable Scanner. From there, select Enabled to change the setting to re-enable the scanner module and then save the setting. POR the MFP to operating mode. Run a copy from the flatbed. Did the 840.xx error reoccur? Go to step 11. The problem is solved.
  Step 11 Replace the controller board. See gController board removalh. The problem is solved. Contact second.level support.

• Code: 841.xx
• Description: Scanner failure—front side image processing ASIC. Invalid configuration or ASIC not found
• Remedy: CCD service check
  Step 1 Restart the device, and retry the scan / copy job. Repeat this step with a few copy jobs. Does the error return? Go to step 2. No issue.
  Step 2 Is the CCD ribbon cable properly connected to JCIS1 on the controller board? Go to step 3. Properly connect cable to JCIS1.
  Step 3 Replace the flatbed unit. See “Flatbed assembly removal”. Did this resolve the issue? The problem is solved. Replace the controller board. See “Controller board removal”.
  Flatbed home position service check
  Step 1 POR the MFP. Does the CCD move and return to the home position? The problem is solved. Go to step 2.
  Step 2 Perform the home position sensor test. See “Scanner tests”. Is the sensor working properly? Go to step 3. Go to step 5.
  Step 3 Check JFBM1 on the controller for proper connection. Is it connected properly? Go to step 4. Properly connect the cable.
  Step 4 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 5. Replace the controller board. See “Controller board removal”.
  Step 5 Ensure that the home position cable (JHOME1) is connected. Is the cable connected? Go to step 6. Properly connect the cable.
  Step 6 Check pin 1 in JHOME1 for voltage. The voltage should measure +5V DC. Pin 2 should be GND. Is voltage present and is it correct? Replace the flatbed. See “Flatbed assembly removal”. Replace the controller board. See “Controller board removal”.

• Code: 842.xx
• Description: Scanner failure—communications
• Remedy: Step 1 Restart the device, and retry the scan / copy job. Repeat this step with a few copy jobs. Does the error return? Go to step 2. No issue.
  Step 2 Is the CCD ribbon cable properly connected to JCIS1 on the controller board? Go to step 3. Properly cStep 3 Replace the flatbed unit. See “Flatbed assembly removal”. Did this resolve the issue? The problem is solved. Replace the controller board. See “Controller board removal”.onnect cable to JCIS1.
  

• Code: 843.00...849.xx
• Description: 843.00 Scanner Failure—carriage failed to Home or move to desired position 843.01 ADF mechanical failure 843.02 Generic Mechanical failure detected 843.03 Pick Roller Engage Failure 843.04 Pick Roller Disengage Failure 843.05 Carriage overun 843.06 ADF nudger 843.99 Scanner complete timeout error 849.xx Scanner configuration error
• Remedy: Step 1 Check all cables connecting the ADF and flatbed to the controller board. Are they properly connected? Go to step 3. Go to step 2.
  Step 2 Re-connect the cables to the controller board. Did this fix the problem? The problem is solved. Go to step 3.

• Code: 88
• Description: Toner cartridge low
• Remedy: 1 Make sure the toner cartridge smart chip contact cable JARW1 is properly connected to the controller board. 2 Make sure the contacts are free of debris. 3 Check the contacts for damaged pins. If damaged, replace the toner cartridge smart chip contact. 4 If the contacts are free of damage, contact your next level of support.

• Code: 900.xx
• Description: Service RIP Software Unrecoverable RIP software error/illegal trap.
• Remedy:

• Code: 912.xx
• Description: Unrecoverable Engine firmware error
• Remedy: POR the machine. If the error re.occurs, then update the firmware. If the error continues occurring, then replace the controller board.

• Code: 940.xx
• Description: RIP to engine communication failure—the zero crossing signal used for fuser control in the low voltage (LV) power supply has failed, or the wrong low voltage power supply has been installed.
• Remedy: Step 1 Check if the power supply cable is properly connected to the controller board. Is it properly connected? Go to step 2. Reseat the cables.
  Step 2 a Turn off the printer. b Remove the power cord. c Measure the resistance between terminals A and D of the power supply socket. Is the resistance approximately 30 ohms? Contact your next level of support. Replace the power supply. See “Power supply removal”.