• 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 Turn the printer off, and remove the fuser. See “Fuser removal”. POR the printer. Did the error clear? Problem resolved. 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 5.
  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”.
  6 1. Replace the fuser. 2. Bring the printer up in Diagnostics Menu (turn off the printer, press and hold and . and turn on the printer). 3. Select SENSOR TESTS, and press Select( ). 4. Select Dynamic Sensors, and press Select( ). 5. Select Fuser Exit, and press Select( ). 6. Open the front door, and then the top access cover. 7. Activate the fuser exit sensor. Did the fuser exit sensor change from Open to Closed? Problem resolved. Replace the system board. See “System board removal”.

• Code: 920.09
• Description: POST Error
  Four toner sensors are not connected.
• Remedy: 1 Turn the printer off, and then remove the rear frame cover. See “Rear frame cover removal”. Reseat the cable in connector JHVPS1 (A). Does 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 Remove the left cover. See “Left cover removal”. Check the HVPS cable for correct connection to the HVPS board, pinch points for the cable, or any other damage. Is the cable damaged? Replace the HVPS cable. See “High-voltage power supply (HVPS) cable removal”. Go to step 4.
  4 Replace the HVPS board. See “High-voltage power supply (HVPS) removal”. Does the error clear? Problem resolved. Replace the system board. See “System board removal”.

• Code: 920.10
• Description: POST Error
  Three toner sensors are not connected.
• Remedy: 1 Remove the left cover. See “Left cover removal”. Check all the toner level sensor cables connected to the rear of the HVPS. Are any of the cables damaged? If only one or two of the toner level sensor are damaged: • Disconnect the sensor(s). • Go to step 6. If three toner level sensors are damaged, replace the damaged sensors. See “Toner level sensor removal”. Go to step 2.
  2 Reconnect the HVPS cable. Disconnect one of the toner level sensors and POR the printer. Does the 920.10 error occur again? • Then this sensor is one of the three bad sensors’ • Continue disconnecting the toner level sensors until three sensors are disconnected and the 920.10 error occurs. • Replace the toner level sensors that are disconnected. See “Toner level sensor removal”. Repeat this step for the other toner level sensors until the 920.10.

• Code: 920.11
• Description: POST Error
  Two toner sensors are not connected.
• Remedy: 1 Remove the left cover. See “Left cover removal”. Check all the toner level sensor cables connected to the rear of the HVPS. Are any of the cables damaged? If only one of the toner level sensor is damaged: • Disconnect the sensor. • Go to step 6.’ If two toner level sensors are damaged, replace the damaged sensors. See “Toner level sensor removal”. Go to step 2.
  2 Reconnect the HVPS cable. Disconnect one of the toner level sensors and POR the printer. Does the 920.11 error occur again? • If the error recurrs, then this sensor is one of the bad sensors.’ • Continue disconnecting the toner level sensors until two sensors are disconnected and the 920.11 error occurs. • Replace the toner level sensors that are disconnected. See “Toner level sensor removal”. Repeat this step for the other toner level sensors until the 920.11.

• Code: 920.12
• Description: POST Error
  One toner sensor is not connected.
• Remedy: 1 Remove the left cover. See “Left cover removal”. Check all the toner level sensor cables connected to the rear of the HVPS. Are any of the cables damaged? Replace the damaged sensor. See “Toner level sensor removal”. Go to step 2.
  2 Disconnect the cable in the connector JHVPS1 from the system board and the HVPS. Check for the following continuity. Is continuity present? Go to step 3. Replace the HVPS cable. See “High-voltage power supply (HVPS) cable removal”
  3 Reconnect the HVPS cable. Disconnect one of the toner level sensors and POR the printer. Does the 920.12 error occur again? Replace the toner level sensor. See “Toner level sensor removal”. Repeat the step for the other toner level sensors. After all the sensors are tested without the 920.12 recurring, the problem is resolved.

• Code: 920.13
• Description: POST Error
  Cartridge motor 1 (top) not connected.
• Remedy: 1 Turn the printer off, and then remove the rear frame cover. See “Rear frame cover removal”. Reseat the cables in connectors JCARTP1 (A) and JCARTS1 (B). Does the error clear? Problem resolved. Go to step 2.
  2 Check the cables in connectors JCARTP1 and JCARTS1 for pinch points and any other damage to the cables or connectors. Is the cable damaged? Replace the cartridge motor 1/fuser cable. See “Cartridge motor 1/fuser cable removal”. Go to step 3.
  3 Remove the right cover. Check the cartridge motor 1/fuser motor cable for proper connection to the EP drive assembly, pinch points for the cable, or any other damage to the cable or connector. Is either cable damaged? Replace the cartridge motor 1/fuser motor cable. See “Cartridge motor 1/ fuser cable removal”. Go to step 4.
  4 Measure the resistance across fuse F7 on the system board. Is the fuse blown? Replace the system board. See “System board removal”. Replace the EP drive assembly. See “Electrophotographic (EP) drive assembly removal”.

• Code: 920.14
• Description: POST Error
  Cartridge motor 2 (middle) is 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 connector JCARTP2 (A) and JCARTS2 (B). Does the error clear? Problem resolved. Go to step 2.
  2 Check the cable in connector JCARTP2 and JCARTS2 for pinch points and any other damage to the cable or connector. Are the cables damaged? Replace the cartridge motor 2/3 cable. See “Cartridge motor 2/3 cable removal”. Go to step 3.
  3 Remove the right cover. See “Right cover removal”. Check the cartridge motor 2/3 cable for the proper connection to the EP drive assembly, pinch point for the cable, or damage to the cable or connectors. Is either cable damaged? Replace the cartridge motor 2/3 cable. See “Cartridge motor 2/3 cable removal”. Go to step 4.
  4 Measure the resistance across the fuse F7 (A) on the system board. Is the fuse blown? Replace system board. See “System board removal”. Replace the EP drive assembly. See “Electrophotographic (EP) drive assembly removal”.

• Code: 920.15
• Description: POST Error
  Bad transfer module NVRAM data.
• Remedy: 1 Turn the printer off, and then remove the rear frame cover. See “Rear frame cover removal”. Reseat the transport cable in connector JTPS1 (A). Does the error clear? Problem resolved. Go to step 2.
  2 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 3.
  3 Lower the front access cover. Check the transport cable for pinch points and any other cable damage. Is the cable damaged? Replace the transport cable. See “Transport cable removal”. Go to step 4.
  4 Replace the transfer module. See “Transfer module removal”. Does the error clear? Problem resolved. Replace the system board. See “System board removal”.