Error code Description Action
953.xx NVRAM chip failure with mirror part
Replace the controller board.
Go to
“Controller board removal” on page
299.
954.xx NVRAM chip failure with system part
Replace the controller board.
955.xx The Code ROM or NAND flash failed the Cyclic
Redundancy Check (CRC) or the NAND
experienced an uncorrectable multi-bit failure.
Replace the controller board.
956.xx RIP card failure—processor failure
Replace the controller board.
956.01 Processor temperature is over the limit.
Replace the controller board.
957.xx RIP card failure—ASIC failure
Replace the controller board.
958.xx Controller Board NAND Failure—printer has
performed more than 100 shift and reflash
operations as a result of ECC bit corrections.
Replace the controller board.
NVRAM mismatch failure service check
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.
Warning—Potential Damage: These components can be used as a method of troubleshooting as long
as the machine is booted into diagnostic mode or is operating in diagnostic mode. Once a component
has been installed in a machine and powered up into user mode, it cannot be used in another machine.
It must be returned to the manufacturer.
Action Yes No
Step 1
Check the control panel assembly.
Was the control panel assembly recently replaced?
Go to step 3. Go to step 2.
Step 2
Check the controller board assembly.
Was the controller board assembly recently replaced?
Go to step 4. Contact next level of
support.
7015
Diagnostics and troubleshooting
171
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