• Code: 945
• Description: Main Engine (MCTL P.W.B.) Board
  Turn the power Off and then back On. If the error still exists, replace the main engine (MCTL P.W.B.) board.
• Remedy: Turn the power Off and then back On. If the error still exists, replace the main engine (MCTL P.W.B.) board.

• Code: 946
• Description: Main Engine (MCTL P.W.B.) Board
  Turn the power Off and then back On. If the error still exists, replace the main engine (MCTL P.W.B.) board.
• Remedy: Turn the power Off and then back On. If the error still exists, replace the main engine (MCTL P.W.B.) board.

• Code: 947
• Description: Process Timing Clock Error
• Remedy: 1 OPC Belt Print Cartridge Check the OPC belt cartridge for any rotation. If the main motor (MM) attempts to turn but the OPC belt cartridge does not, replace the OPC belt cartridge. Note: The OPC belt cartridge is a customer order supply.
  2 Fuser Unit Check the fuser for any rotation. If the main motor (MM) attempts to turn but the fuser does not, replace the fuser unit. Note: The fuser unit is a customer order supply.
  3 If an ‘82 PC Missing’ error is displayed, while diagnosing the main motor (MM), ensure the connector (CN1) on the main motor (MM) and connector ECN12 on the IOD2 P.W.B. board are firmly connected. Ensure the connectors ECN1, ECN2 on the IOD2 P.W.B. board, DCN10 on the IOD1 and 12CN on the main engine (MCTL P.W.B.) board are firmly connected. Replace any damaged part.

• Code: 953
• Description: NVRAM Chip Failure
  Indicates the NVRAM failed the CRC check. Replace the main engine (MCTL P.W.B.) board.
• Remedy: Indicates the NVRAM failed the CRC check. Replace the main engine (MCTL P.W.B.) board.

• Code: 954
• Description: NVRAM CRC Failure
  Indicates the main engine (MCTL P.W.B.) board NVRAM failed the CRC check. Replace the main engine (MCTL P.W.B.) board.
• Remedy: Indicates the main engine (MCTL P.W.B.) board NVRAM failed the CRC check. Replace the main engine (MCTL P.W.B.) board.

• Code: 955
• Description: Code CRC Error
  Indicates that the code ROM failed the CRC check. Replace the code overlay SIMM.
• Remedy: Indicates that the code ROM failed the CRC check. Replace the code overlay SIMM.

• Code: 955
• Description: Font ROM Failure
  Indicates that the font ROM failed the CRC check. Replace the overlay SIMM.
• Remedy: Indicates that the font ROM failed the CRC check. Replace the overlay SIMM.

• Code: 956
• Description: RIP Processor Failure
  Indicates that there was a microprocessor failure on the RIP controller board. Replace the RIP controller board assembly.
• Remedy: Indicates that there was a microprocessor failure on the RIP controller board. Replace the RIP controller board assembly.