Lexmark Optra T Service Manual - Page 33

4069-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 Note: The controller software also can cause a 939 error code. Contact your next level for software support. 940 Service LV Power Supply The low voltage power supply zero crossover test failed. • Check the LVPS for correct installation. Ensure that the connector on the LVPS assembly is firmly seated with the connector on the interconnect card connector. • This error can be caused by a noisy AC input power source. • Check to make sure the correct LVPS has been installed. • If all the above are correct, replace the LVPS assembly. 941 Controller Code CRC A 941 error can be created by a defective code overlay SIMM, a code upgrade, a defective IPDS or a prescribe SIMM. These should be checked before replacing 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. Diagnostic Information 2-5