Dell 5310n - Workgroup Laser Printer B/W Service Manual page 69

Service manual
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Service error codes (9xx.xx) (continued)
Error
Sub
Description
code
codes
949 .0
0
Delay line calibration
failure
950
.00
NVRAM mismatch
951
.00
952
.00
NV failure:n
Possible causes
System board
CRC error has occurred. This is
recoverable.
Action
Replace the system board. See
"System board and inner
shield removal" on page
Go to
"950.00 through 950.29
EPROM mismatch failure" on
2-77. or go to
page
"950.30
through 950.60 EPROM
mismatch failure" on
page
2-78.
Replace the system board. See
"System board and inner
shield removal" on page
Warning: When replacing any
one of the following
components:
• Operator panel assembly
(or upper front cover)
• System board assembly
• Interconnect card assembly
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.
Warning: Never install and
remove components listed
above as a method of
troubleshooting components.
Once a component has been
installed in a printer, it can not
be used in another printer. It
must be returned to the
manufacturer.
Perform POR to clear the error.
Diagnostic information
4-77.
4-77.
2-27

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