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Dell 5230dn Mono Laser Printer Service Manual Page 144

Service manual.
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Error
code or
message
950.xx
952.xx
953.xx
954.xx
2-110
Service Manual
Error contents
NVRAM mismatch
failure
NVRAM failure
NVRAM failure
NVRAM failure
Description/Action
Mismatch between system
card EEPROM and operator
panel mirror.
".xx" codes:
00-29: mismatch between
system and mirror
30-60: mismatch between
secure and system
A recoverable MVRAM Cyclic
Redundancy Check (CRC)
error occurred.
The NVRAM chip has failed.
NVRAM chip failure with
system card assembly.
Possible repair actions
Warning: When replacing any
of the following components:
• Operator panel assembly
(5230n/dn, 5350dn, and
5530dn)
• NVM card assembly (T656
only)
• System card assembly (All
models)
Only replace 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.
"NVRAM mismatch
See
failure (950.00 through
950.29) service check" on
page
2-148.
Power the machine off/on to
reset the error condition.
Replace the operator panel
door assembly (5230n/dn,
5350dn, and 5530dn).
Go to
"Operator panel door
assembly removal (5230n/dn,
5350dn, and 5530dn)" on
page 4-43
or replace the NVM
card assembly (T656 only).
Go to
"NVM card assembly
removal" on page
4-79.
Replace the system card
assembly.
Go to
"System card
assembly removal" on
page
4-76.

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