• Code: 920.02
• Description: POST Error Tray 1 motor not connected.
• Remedy: 1 1. Turn the printer off. 2. Remove the rear frame cover. See “Rear frame cover removal”. 3. Check the cable in connector JFDPCK1 for proper connection to the system board, the cable for pinch points, and the cable or connector for any other damage. 4. Reseat the cable. 5. POR the printer. Did the error clear? Problem resolved. Go to step 2. 2 Measure the continuity across all of the fuses on the system board. Are any of the fuses blown? Replace the system board. See “System board removal”. Go to step 3. 3 1. Disconnect the cable in connector JFDPCK1, and then connect the cable for the new paper pick mechanism. 2. Enter Diagnostics mode (press and hold buttons 3 and 6, turn on the MFP, and release the buttons when the progress bar displays). 3. Touch MOTOR TESTS. 4. Touch Tray 1. Did the new pick motor turn before the feed error occur? Replace the paper pick mechanism. See “Paper pick mechanism assembly removal”. Replace the system board. See “System board removal”.

• Code: 920.03
• Description: POST Error Transfer module not connected.
• Remedy: 1 Open the front access door. Reseat the transport cable. Did the error clear? Problem resolved. Go to step 2. 2 1. Turn the printer off. 2. Remove the rear frame cover. See “Rear frame cover removal”. 3. Reseat the transport cable in connector JTPS1. Did the error clear? Problem resolved. Go to step 3. 3 Check the transport cable in connector JTPS1 for pinch points and for any other damage to the cable or connector. Is the cable damaged? Replace the transport cable. See “Transport cable removal”. Go to step 4. 4 Replace the transport belt assembly. See “Transfer module removal”. Did the error clear? Problem resolved. Go to step 5. 5 Connect a new transport cable to the transfer belt module and the system board from outside of the machine. Did the error clear? Replace the transport cable. See “Transport cable removal”. Replace the system board. See “System board removal”.

• Code: 920.04
• Description: POST Error Fuser motor not connected.
• Remedy: 1 1. Turn the printer off. 2. Remove the rear frame cover. See “Rear frame cover removal”. 3. Reseat the cables in connectors JCARTP1 and JCARTS1. Did the error clear? Problem resolved. Go to step 2. 2 Check the cartridge motor 1/fuser cable in connector JCARTP1 and JCARTS1 for pinch points and the cable or connector for any other damage. Is the cable damaged? Replace the cartridge motor1/fuser cable. See “Cartridge motor 1/fuser cable removal”. Go to step 4. 3 1. Remove the right cover. See “Right cover removal”. 2. Check the cartridge motor 1/fuser motor cable for proper connection to the EP drive assembly, pinch point for the cable, and damage to the cable or connector Is either cable damaged? Replace the cartridge motor1/fuser motor cable. See “Cartridge motor 1/ fuser cable removal”. Go to step 4. 4 1. Disconnect the cable connecting motor 1/ fuser motor cable and cartridge motor 2/ motor 3, and connect the cable to the new EP drive assembly outside the machine. 2. POR the printer, then check if the error remains. Did the error clear? Replace the EP drive assembly. See “Electrophotographic (EP) drive assembly removal”. Go to step 5. 5 Connect a new cartridge motor1/fuser motor cable to the old EP drive assembly without installing it into the machine. Did the error clear? Replace the cartridge motor1/fuser motor cable. See “Cartridge motor 1/ fuser cable removal”. Replace the system board. See “System board removal”.

• Code: 920.05
• Description: POST Error Printhead motor not connected.
• Remedy: 1 1. Turn the printer off. 2. Remove the rear frame cover. See “Rear frame cover removal”. 3. Reseat the cables in connectors JMIRR1 and JPH1. Did the error clear? Problem resolved. Go to step 2. 2 Check the cables in connectors JMIRR1 and JPH1 for pinch points and any other damage to the cables or connectors. Is the cable damaged? Replace the printhead. See “Printhead removal, installation, and adjustment”. Go to step 3. 3 Measure the continuity across all of the fuses on the system board. Are any of the fuses blown? Replace the system board. See “System board removal”. Go to step 4. 4 1. Perform the printhead verification to check whether the new printhead solves the problem. See “Printhead verification”. 2. Perform the Mirror Motor Test. See “Mirror Motor Test”. Did the mirror motor pass the test? Replace the printhead. See “Printhead removal, installation, and adjustment”. Replace the system board. See “System board removal”.

• Code: 920.06
• Description: POST Error Input sensor not connected.
• Remedy: 1 Is the input sensor flag damaged? Replace the paper pick mechanism. See “Paper pick mechanism assembly removal”. Go to step 2. 2 1. Turn the printer off. 2. Remove the rear frame cover. See “Rear frame cover removal”. 3. Check the cable in connector JTRAY1 for proper connection to the system board, for pinch points, and any other damage to the cable or connector. Check both ends of the cable. Is the cable damaged? Replace the paper pick mechanism. See “Paper pick mechanism assembly removal”. Go to step 3. 3 1. Disconnect the cable in the connector JTRAY1. 2. Connect the cable from the new paper pick assembly in connector JTRAY1. 3. Enter Diagnostics mode (press and hold buttons 3 and 6, turn on the MFP, and release the buttons when the progress bar displays). 4. Touch SENSOR TESTS. 5. Touch Dynamic Sensors. 6. Touch Input. 7. Activate the input sensor. Did the touchscreen change from Open to Closed? Replace the paper pick mechanism. See “Paper pick mechanism assembly removal”. Replace the system board. See “System board removal”.

• Code: 920.07
• Description: POST Error Narrow media sensor not connected.
• Remedy: 1 1. Turn the printer off. 2. Remove the rear frame cover. See “Rear frame cover removal”. 3. Reseat the cable in connector JTRAY1. Did the error clear? Problem resolved. Go to step 2. 2 Check the cable in connector JTRAY1 for pinch points and the cable or connector for any other damage. Is the cable damaged? Replace the paper pick mechanism. See “Paper pick mechanism assembly removal”. Go to step 3. 3 Place a voltmeter between JTRAY1 pin 4 and ground (pin 1). Does the meter read +5 V dc? Go to step 4 Replace the system board. See “System board removal”. 4 1. Disconnect the cable in JTRAY1, and connect the cable from the new paper pick mechanism. 2. Enter Diagnostics mode (press and hold buttons 3 and 6, turn on the MFP, and release the buttons when the progress bar displays. 3. Touch Sensor Tests. 4. Touch Dynamic Sensors. 5. Touch Narrow Media. 6. Activate the narrow media sensor. Did the narrow media sensor change from Closed to Open on the touchscreen? Replace the paper pick mechanism. See “Paper pick mechanism assembly removal”. Replace the system board. See “System board removal”.

• Code: 920.08
• Description: POST Error Exit sensor not connected.
• Remedy: 1 Verify the paper is loaded properly in the paper tray or manual feed slot. Is the paper properly loaded? Go to step 2. Load paper correctly. 2 1. Turn the printer off. 2. Install the new fuser. See “Fuser assembly removal”. Note: Do not reset fuser count or run motor calibration yet. 3. POR the printer. Did the error clear? Problem resolved. Note: Complete the fuser installation, reset fuser count, and run motor calibration. See “Fuser assembly removal”. Remove the new fuser, and go to step 3. 3 Remove the rear frame cover. See “Rear frame cover removal”. Check the fuser DC cable in the connector JFUSER1 for proper connection to the system board, for pinch points, and for any other damage to the cable or the connector. Is the cable damaged? Replace the fuser DC cable. See “Fuser DC cable removal”. Go to step 4. 4 Place a voltmeter between the fuser DC autoconnect pin 8 and ground (pin 6). Does the meter rear +5 V dc? Go to step 6. Go to step 5. 5 Place a voltmeter between the connector JFUSER1 pin 8 and ground (pin 6) on the system board. Does the meter read +5 V dc? Go to step 6. Replace the fuser DC cable. See “Fuser DC cable removal”.

• Code: 920.09
• Description: POST Error Four toner sensors are not connected.
• Remedy: 1 1. Turn the printer off. 2. Remove the rear frame cover. See “Rear frame cover removal”. 3. Reseat the cable in connector JHVPS1. Did the error clear? Problem resolved. Go to step 2. 2 Check the HVPS cable in connector JHVPS1 for pinch points and any other damage to the cable or connector. Is the cable damaged? Replace the HVPS cable. See “High-voltage power supply (HVPS) cable removal”. Go to step 3. 3 1. Remove the left cover. See “Left cover removal”. 2. Reseat and check all the toner level sensor cables (A) connected to the rear of the HVPS for damages and if they are installed correctly. Does the problem persist? Go to step 4. Problem resolved. 4 Connect four new toner level sensors outside the machine and perform a POR. Note: Keep track of which sensors change the error code to reduce the number of failing sensors. Keep the old sensor which does not reduce the failing number, leaving three new sensors and no error reported. Does the problem persist? Remove the four new toner level sensors and go to step 5. Replace the failing toner level sensors. See “Toner level sensor removal”. 5 Replace the HVPS board. See “High-voltage power supply (HVPS) removal”. Did the error clear? Problem resolved. Go to step 6. 6 1. Install the old HVPS back to the machine. 2. Replace the HVPS cable. See “Highvoltage power supply (HVPS) cable removal”. Does the problem persist? Replace the system board. See “System board removal” Problem resolved.