Lexmark C720 Service Manual page 86

5024-001
Error Code
962
Memory RAM Error
963
Memory RAM Error
964
Download Emulation
CRC Error
965
Download Emulation
Outdated Error
970 through 974
975 Unrecognizable
Network Card x Error
976
Unrecoverable
Software in Network
Card x Error
977
978
Bad Checksum While
Programming
Network Card x Error
2-6
Service Manual
Action
Indicates that the DRAM installed in slot 2 on the
controller board is defective. Replace the DRAM
SIMM. If this does not fix the problem, replace the
RIP controller board assembly.
Indicates that the DRAM installed in slot 3 on the
controller board is defective. Replace the DRAM
SIMM. If this does not fix the problem, replace the
RIP controller board assembly.
Indicates that the download emulation CRC has
failed. A checksum failure was detected in the
emulation header or emulation file. Replace the code
overlay SIMM.
Indicates that the download emulation is outdated.
Time stamps indicate that the download emulation
and controller code are incompatible.
• Disable the download emulation.
• Program the download emulation into the code
overlay SIMM.
• If the above steps do not fix the problem, replace
the code overlay SIMM and re-download the
emulation.
Reserved
Indicates that a failure has occurred with the network
card installed in slot x (x = 1, 2 or 3).
Indicates an unrecognizable network card x. Replace
network card x.
Removed
Indicates that a bad checksum has been detected
while programming network card x. Replace network
card x.