• Code: 840.02
• Description: Scanner Error Scanner auto disabled
• Remedy: Print out the error log and see what caused the MFP to disable Go to the Configuration Menu and enable the scanner: 1. Enter the Configuration Menu (press and hold 2 and 6, turn on the MFP, and release the buttons when the progress bar displays). 2. Touch Disable Scanner in the Config Menu. 3. Touch the left or right arrows to select Enabled (default), Disabled, or ADF Disabled. 4. Touch Submit. Submitting changes… is displayed.

• Code: 841.xx
• Description: Scanner Error Image pipeline ASIC
• Remedy: Replace MDC card.

• Code: 842.00
• Description: Scanner Failure Communication Failure
• Remedy: 1 1. Check the scanner flex cable from the scanner MDC card to the system board. 2. Remove the left cover. See “Left cover removal”. 3. Remove the rear frame cover. See “Rear frame cover removal”. Are both ends of the cable (A) seated? Go to step 2. Reseat the scanner flex cable. 2 Is the scanner flex cable damaged? Replace the scanner flex cable. Go to step 3. 3 Replace the scanner MDC card. See “Scanner ICC cable removal”. Is the problem fixed? Problem resolved. Replace the system board. See “System board removal”.

• Code: 843.00
• Description: Scanner Failure Carriage failed to home or move to desired position.
• Remedy: 1 Check the flatbed motor cables. Remove the flatbed with glass cover. See “Flatbed with glass cover removal”. Are either end of the cables (A, B) loose? Reseat the flatbed motor cable. Replace the flatbed scanner. See “Flatbed scanner removal”

• Code: 843.01 ... 843.04
• Description: 843.01 Scanner Failure ADF mechanical failure 843.02 Scanner Failure Mechanical failure detected. 843.03 Scanner Failure Pick roller engage failure. 843.04 Scanner Failure Pic roller disengage failure
• Remedy: 1 Check the ADF cable. 1. Remove the left cover. See “Left cover removal”. 2. Remove the scanner rear cover. See “Scanner rear cover removal”. Is the cable (A) damaged? Replace the ADF cable. Replace the ADF. See “ADF removal (entire)”.

• Code: 844.00 ... 844.08
• Description: 844.00 Scanner Error Front scan module output level error. 844.02 Scanner Error Front scan module lamp level too low. 844.04 Scanner Error Front scan module has excessive noise. 844.06 Scanner Error Front scan module has excessive variability. 844.08 Scanner Error Front scan module banding.
• Remedy: 1 Check the flatbed lamp. Is the lamp on brightly? Go to step 2. Replace the flatbed lamp. See “Flatbed CCD carrier module removal”. 2 Remove the left cover. See “Left cover removal”. Are the cables (A and B) securely connected? Go to step 3. Reseat the flatbed CCD cable. 3 Are the cables damaged? Replace the flatbed scanner. See “Flatbed scanner removal” Replace the flatbed CC carrier module. See “Flatbed CCD carrier module removal”.

• Code: 845.00, 845.02
• Description: 845.00 Scanner Failure Front scan module cable failure or SCC card failure. 845.02 Scanner Failure Front scan module cable failure or SCC card failure.
• Remedy: 1 Check flatbed CCD cable (A). Remove the flatbed with glass cover. See “Flatbed with glass cover removal”. Is the cable loose? Reseat the flatbed CCD cable. Replace the flatbed scanner. See “Flatbed scanner removal”. 2 Is the flatbed CCD cable damaged? Replace the flatbed CCD cable. Replace the scanner MDC card. See “Scanner ICC cable removal”.

• Code: 846.00 ... 846.05
• Description: 846.00 Scanner Failure Front calibration strip unusable. 846.02 Scanner Failure Front calibration strip too far left. 846.03 Scanner Failure Front calibration strip too far right. 846.04 Scanner Failure Front calibration strip has excessive skew. 846.05 Scanner Failure Front calibration strip has excessive bow.
• Remedy: Remove the flatbed with glass cover See “Flatbed with glass cover removal”. Is flatbed calibration strip properly attached to the flatbed with glass cover? Replace the flatbed CCD carrier module. See “Flatbed CCD carrier module removal”. Replace the flatbed with glass cover. See “Flatbed with glass cover removal”.