Diagnostic information 2-29954 .00 Replace the interconnect card.See “Interconnect cardassembly removal” onpage 4-54.Warning: When replacing anyone of the followingcomponents:• Operator panel assembly(or upper front cover)• System board assembly• Interconnect card assemblyOnly replace one component ata time. Replace the requiredcomponent and perform a PORbefore replacing a secondcomponent listed above. If thisprocedure is not followed, theprinter will be renderedinoperable. Never replace twoor more of the componentslisted above without a PORafter installing each one or theprinter will be renderedinoperable.Warning: Never install andremove components listedabove as a method oftroubleshooting components.Once a component has beeninstalled in a printer, it can notbe used in another printer. Itmust be returned to themanufacturer.955 .00 Code CRC CRC failure or ECC code failure on thesystem board. Replace the system board. See“System board and innershield removal” on page 4-77.956 .00 System board This error indicates a system boardprocessor failure. Replace the system board. See“System board and innershield removal” on page 4-77.957 .00 System board This error indicates a system boardprocessor failure. Replace the system board. See“System board and innershield removal” on page 4-77.958 .00 Nand failure Printer has performed more than 100“shift and replace” operations as a resultof EC bit corrections.Replace the system board. See“System board and innershield removal” on page 4-77.Service error codes (9xx.xx) (continued)ErrorcodeSubcodes Description Possible causes Action
