9Xx Error Messages - Lexmark MX81 Series Service Manual

9xx error messages

Error code Description
900.xx RIP firmware errors
912.xx Unrecoverable Engine firmware error
940.xx RIP to engine communication failure—the zero
crossing signal used for fuser control in the low voltage
(LV) power supply has failed, or the wrong low voltage
power supply has been installed.
948.xx Failed engine card—pel clock check failed.
949.xx Failed engine card—delay line calibration failure.
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
952.xx A recoverable NVRAM Cyclic Redundancy Check (CRC)
error occurred—n is the offset at which the error
occurred.
953.xx NVRAM chip failure with mirror part
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
uncorrectable multi-bit failure.
956.xx The flatbed scanner and ADF cannot properly
communicate with the controller board in the base
printer.
Action
Go to "System software error service check" on
page 143.
POR the machine. If the error re‑occurs, then update
the firmware. If the error continues occurring, then
replace the controller board. Go to
board removal" on page
Check the LVPS. Go to
page 112.
Replace the controller board. Go to
board removal" on page
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 147.
POR the printer.
Replace the controller board. Go to
board removal" on page
See "Communication failure with flatbed scanner
and ADF" on page
Diagnostic information
140
"Controller
386.
"LVPS service check" on
"Controller
386.
"Controller
386.
143.
7463