• Code: 947.01
• Description: Transfer Roll
  Yellow transfer roll has failed.
• Remedy: 1 Replace the transfer module. POR the printer. Did the error clear? Problem resolved. Replace the original transfer module. Go to step 2.
  2 Turn the printer off, and then remove the rear frame cover. See “Rear frame cover removal”. Check the cable in connector JHVPS1 (A) for proper connection to the system board, the cable for pinch points, and the cable or connector for any other damage. Is the cable damaged? Replace the HVPS cable. See “High-voltage power supply (HVPS) cable removal”. Go to step 2.
  3 Disconnect JHVPS1 from system board and HVPS. Check for the following continuity. Pin 19 Pin 19 945.01, 946.01, 947.01 Pin 20 Pin 20 Pin 15 Pin 15 945.02, 946.02, 947.02 Pin 16 Pin 16 Pin 17 Pin 17 945.03, 946.03, 947.03 Pin 18 Pin 18 Pin 23 Pin 23 945.04, 946.04, 947.04 Pin 24 Pin 24 Is continuity present? Replace the HVPS cable. See “High-voltage power supply (HVPS) cable removal”.
  4 Remove the HVPS. See “High-voltage power supply (HVPS) removal”. Check for continuity between the contacts (yellow1 and yellow2, cyan1 and cyan2, magenta1 and magenta2, or black1 and black2) on the transfer contact assembly. Go to step 4. Replace the transfer contact assembly.
  4 Replace the HVPS. See “High-voltage power supply (HVPS) removal”. Does the error clear? Problem resolved. Replace the system board. See “System board removal”.

• Code: 947.02
• Description: Transfer Roll
  Cyan transfer roll has failed.
• Remedy: 1 Replace the transfer module. POR the printer. Did the error clear? Problem resolved. Replace the original transfer module. Go to step 2.
  2 Turn the printer off, and then remove the rear frame cover. See “Rear frame cover removal”. Check the cable in connector JHVPS1 (A) for proper connection to the system board, the cable for pinch points, and the cable or connector for any other damage. Is the cable damaged? Replace the HVPS cable. See “High-voltage power supply (HVPS) cable removal”. Go to step 2.
  3 Disconnect JHVPS1 from system board and HVPS. Check for the following continuity. Pin 19 Pin 19 945.01, 946.01, 947.01 Pin 20 Pin 20 Pin 15 Pin 15 945.02, 946.02, 947.02 Pin 16 Pin 16 Pin 17 Pin 17 945.03, 946.03, 947.03 Pin 18 Pin 18 Pin 23 Pin 23 945.04, 946.04, 947.04 Pin 24 Pin 24 Is continuity present? Replace the HVPS cable. See “High-voltage power supply (HVPS) cable removal”.
  4 Remove the HVPS. See “High-voltage power supply (HVPS) removal”. Check for continuity between the contacts (yellow1 and yellow2, cyan1 and cyan2, magenta1 and magenta2, or black1 and black2) on the transfer contact assembly. Go to step 4. Replace the transfer contact assembly.
  4 Replace the HVPS. See “High-voltage power supply (HVPS) removal”. Does the error clear? Problem resolved. Replace the system board. See “System board removal”.

• Code: 947.03
• Description: Transfer Roll
  Magenta transfer roll has failed.
• Remedy: 1 Replace the transfer module. POR the printer. Did the error clear? Problem resolved. Replace the original transfer module. Go to step 2.
  2 Turn the printer off, and then remove the rear frame cover. See “Rear frame cover removal”. Check the cable in connector JHVPS1 (A) for proper connection to the system board, the cable for pinch points, and the cable or connector for any other damage. Is the cable damaged? Replace the HVPS cable. See “High-voltage power supply (HVPS) cable removal”. Go to step 2.
  3 Disconnect JHVPS1 from system board and HVPS. Check for the following continuity. Pin 19 Pin 19 945.01, 946.01, 947.01 Pin 20 Pin 20 Pin 15 Pin 15 945.02, 946.02, 947.02 Pin 16 Pin 16 Pin 17 Pin 17 945.03, 946.03, 947.03 Pin 18 Pin 18 Pin 23 Pin 23 945.04, 946.04, 947.04 Pin 24 Pin 24 Is continuity present? Replace the HVPS cable. See “High-voltage power supply (HVPS) cable removal”.
  4 Remove the HVPS. See “High-voltage power supply (HVPS) removal”. Check for continuity between the contacts (yellow1 and yellow2, cyan1 and cyan2, magenta1 and magenta2, or black1 and black2) on the transfer contact assembly. Go to step 4. Replace the transfer contact assembly.
  4 Replace the HVPS. See “High-voltage power supply (HVPS) removal”. Does the error clear? Problem resolved. Replace the system board. See “System board removal”.

• Code: 947.04
• Description: Transfer Roll
  Black transfer roll has failed.
• Remedy: 1 Replace the transfer module. POR the printer. Did the error clear? Problem resolved. Replace the original transfer module. Go to step 2.
  2 Turn the printer off, and then remove the rear frame cover. See “Rear frame cover removal”. Check the cable in connector JHVPS1 (A) for proper connection to the system board, the cable for pinch points, and the cable or connector for any other damage. Is the cable damaged? Replace the HVPS cable. See “High-voltage power supply (HVPS) cable removal”. Go to step 2.
  3 Disconnect JHVPS1 from system board and HVPS. Check for the following continuity. Pin 19 Pin 19 945.01, 946.01, 947.01 Pin 20 Pin 20 Pin 15 Pin 15 945.02, 946.02, 947.02 Pin 16 Pin 16 Pin 17 Pin 17 945.03, 946.03, 947.03 Pin 18 Pin 18 Pin 23 Pin 23 945.04, 946.04, 947.04 Pin 24 Pin 24 Is continuity present? Replace the HVPS cable. See “High-voltage power supply (HVPS) cable removal”.
  4 Remove the HVPS. See “High-voltage power supply (HVPS) removal”. Check for continuity between the contacts (yellow1 and yellow2, cyan1 and cyan2, magenta1 and magenta2, or black1 and black2) on the transfer contact assembly. Go to step 4. Replace the transfer contact assembly.
  4 Replace the HVPS. See “High-voltage power supply (HVPS) removal”. Does the error clear? Problem resolved. Replace the system board. See “System board removal”.

• Code: 950.00...950.29
• Description: NVRAM Failure
  A mismatch between the operatorpanel assembly and the system board.
• Remedy: 1 Has the operator panel assembly been replaced recently? Replace the operator panel assembly with a new, and not previously installed, operator panel assembly, See “Operator panel assembly removal”. Go to step 2.
  2 Has the top access cover assembly been replaced recently? Replace the top access cover assembly with a new, and not previously installed, operator panel assembly. See “Top access cover assembly removal”. Go to step 3.
  3 Has the system board been replaced recently? Replace the system board with a new, and not previously installed, system board. See “System board removal”. Go to step 4.
  4 Turn the printer power off for ten or more seconds. Then turn the printer back on (POR the printer). Is the error gone, and can the printer print? Problem resolved. Go to step 5.
  5 Clear the NVRAM of the printer: 1. Turn the printer power off. 2.With the printer off, press and hold the left ( ), up ( ), and right ( ) arrow buttons. 3. Turn the printer power on. 4.When the printer screen displays Restoring Factory Defaults, release the buttons. Note: If the printer locks up on the Restoring Factory Defaults, wait two minutes, and then turn the printer power off. After ten seconds or more, turn the printer power back on without holding down any buttons. Is the error message still displayed? Go to step 6. Problem resolved.
  6 Replace the operator panel assembly. See “Operator panel assembly removal”. Is the error message still displayed? Replace the system board. See “System board removal”. Problem resolved.

• Code: 951.01...951.99
• Description: NVRAM Failure
  System board NVRAM failure.
• Remedy: • POR the printer. • If the error message persists, replace the system board

• Code: 952.01...952.99
• Description: NVRAM Error
  CRC error has occurred. This is recoverable.
• Remedy: Perform a POR to clear the error.

• Code: 953.01...953.99
• Description: NVRAM Failure
  Operator panel assembly NVRAM failure.
• Remedy: • POR the printer. • Replace the operator panel assembly if the error message persists.