Lexmark X642e Service Manual page 73

Service error codes (9xx.xx) (continued)
Error Sub
Display text
code codes
950 .30— Service NVRAM
.60 mismatch
952 .00 NV failure:n
953 .00
Description
EPROM mismatch failure
CRC error has occurred. This is
recoverable.
Action
This error code indicates a
mismatch between the System
Board assembly and the interface
card assembly.
Warning: In the event of
replacement of any one of the
following components:
• Flatbed interconnect card
• System board assembly
• Interface 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 machine, it
cannot be used in another machine.
It must be returned to the
manufacturer.
Go to"950.30 through 950.60
EPROM mismatch failure" on
page 2-121.
Perform POR to clear the error.
Replace the operator panel right
cover assembly. See "Operator
panel right cover assembly
removal" on page 4-64.
Diagnostic information
7002-xxx
2-35