Error code Description Action
954.xx The NVRAM chip failure with controller part.
1 POR the printer.
2 If the problem persists, then replace the
controller board.
Go to
“Controller board removal” on
page 291.
955.xx The Code ROM or NAND flash failed the Cyclic
Redundancy Check (CRC) check or the NAND
experienced an uncorrectable multi-bit failure.
<loc> indicates the source of the failure and has
one of the following values:
• CRC Failure: The source is a failing package
indicated by Pn where n is the package
number. This error could occur on a controller
with ROM or NAND flash and could occur as a
result of the CRC check done when the
machine is powered on. The range of package
numbers is from 0 to 15.
• Error Correction Code (ECC) Failure: The
source is a failing page indicated by Bn where
“n” is the page number. This error occurs only
if a multi-bit failure is detected during the ECC
execution. Single bit failures will be corrected
automatically and will not result in a service
error. The range of page numbers is from 0 to
1023.
1 POR the printer.
2 If the problem persists, then replace the
controller board.
956.xx Controller board failure. Processor failure.
Check on .02 for fan error.
1 POR the printer.
2 If the problem persists, then replace the
controller board.
957.xx Controller board failure. ASIC failure.
1 POR the printer.
2 If the problem persists, then replace the
controller board.
958.xx Printer has performed more than 100 “shift and
reflash” operations as a result of ECC bit
corrections.
1 POR the printer.
2 If the problem persists, then replace the
controller board.
5027
Diagnostic information
108
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