Error code Description Action
950.xx NVRAM mismatch failure—mismatch between
controller board EEPROM and control panel mirror.
".xx" codes:
• 00-29— mismatch between system and mirror
• 30-60—mismatch between secure and system
Warning—Potential Damage: When replacing any
of the following components:
• Control panel assembly
• Controller board assembly
Replace only one component at a time. Replace the
required component and perform a POR before
replacing a second component listed above. If this
procedure is not followed, the printer will be
rendered inoperable. Never replace two or more of
the components listed above without a POR after
installing each one or the printer will be rendered
inoperable.
Never install and remove components listed above
as a method of troubleshooting components. Once
a component has been installed in a machine, it can
not be used in another machine. It must be returned
to the manufacturer.
Go to “NVRAM mismatch failure service check” on
page 94.
952.xx A recoverable NVRAM Cyclic Redundancy Check (CRC)
error occurred—n is the offset at which the error
occurred.
POR the printer.
953.xx NVRAM chip failure with mirror part Replace the controller board. Go to “Controller
board removal” on page 164.
954.xx NVRAM chip failure with system part
955.xx The Code ROM or NAND flash failed the Cyclic
Redundancy Check (CRC) or the NAND experienced an
uncorrectible multi-bit failure.
956.xx RIP card failure—processor failure
956.01 Processor Overtemp
957.xx RIP card failure—ASIC failure
958.xx Controller Board NAND Failure—printer has
performed more than 100 shift and reflash operations
as a result of ECC bit corrections.
959.01 Controller verification failure of pensive boot code Upgrade firmware. If that fails, replace the controller
board. Go to “Controller board removal” on
page 164.
959.02 Failure to authenticate Signature Verification Code
959.03 Signature Verification Code failed to authenticate a
code partition
959.04 Jump to unverified address
959.05 Unknown Boot Failure
959.20 Pensive hardware failure Replace the controller board. Go to “Controller
board removal” on page 164.
4514-420, -430
Diagnostic information
87
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