Lexmark M410 Service Manual - Page 29

Error Code, Action, Board Failure - error 939

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4045-XXX Error Code Action 939 Controller Engine Communications Error The controller board and the engine board cannot communicate with one another. The controller board, engine board or interconnect board is defective. Check each board for correct installation and secure ground. If no problem is found, replace the FRUs in the following order: controller board engine board interconnect board 941 Controller Code CRC 941 Controller Font CRC 943 Controller Font Version 944 Controller Board Failure 945 Controller Board Failure ASIC Failure 946 Controller Board Failure SRAM Failure 947 Engine Board 953 NVRAM Failure 954 NVRAM Failure 960 RAM Memory Error Note: The controller software also can cause a 939 error code. Contact your next level for software support. Replace the controller board. Replace the controller board. Indicates that the controller code and FONT ROM are incompatible. Replace the controller board. Replace the controller board. Replace the controller board. Replace the engine board. Indicates the NVRAM chip on the engine board has failed. Replace the engine board. Indicates the NVRAM experienced a CRC failure. Replace the engine board. Indicates a DRAM Memory Error on the controller board. Replace the controller board. Diagnostic Information 2-3

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Diagnostic Information
2-3
4045-XXX
939 Controller -
Engine
Communications
Error
The controller board and the engine board cannot
communicate with one another. The controller board,
engine board or interconnect board is defective. Check
each board for correct installation and secure ground. If
no problem is found, replace the FRUs in the following
order:
controller board
engine board
interconnect board
Note:
The controller software also can cause a 939 error
code. Contact your next level for software support.
941 Controller
Code CRC
Replace the controller board.
941 Controller
Font CRC
Replace the controller board.
943 Controller
Font Version
Indicates that the controller code and FONT ROM are
incompatible.
944 Controller
Board Failure
Replace the controller board.
945 Controller
Board Failure -
ASIC Failure
Replace the controller board.
946 Controller
Board Failure -
SRAM Failure
Replace the controller board.
947 Engine
Board
Replace the engine board.
953 NVRAM
Failure
Indicates the NVRAM chip on the engine board has
failed. Replace the engine board.
954 NVRAM
Failure
Indicates the NVRAM experienced a CRC failure.
Replace the engine board.
960 RAM
Memory Error
Indicates a DRAM Memory Error on the controller board.
Replace the controller board.
Error Code
Action