Lexmark 522n - C Color Laser Printer, Service Manual

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Diagnostic Information
2-5
4520-xxx
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 may also be caused by a noisy AC input power
source.
• Be 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
card, a code upgrade, a defective IPDS or a
PRESCRIBE card. 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.
947 PQET Error Replace the engine board.
948 PEL Clock
Error Indicates the PEL clock check failed. Replace the engine
board.
949 Delay Line
Calibration
Failure Indicates a delay line calibration failure. 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.
Error Code Action