2-78 Service Manual950.30 through 950.60 EPROM mismatch failureWarning: When replacing any one of the following components:• Operator panel assembly (or upper front cover)• System board assembly• Interconnect card assemblyOnly replace one component at a time. Replace the required component and perform a POR before replacing asecond component listed above. If this procedure is not followed, the printer will be rendered inoperable. Neverreplace two or more of the component s listed above without a POR after inst alling each one or the printer will berendered 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 bereturned to the manufacturer.Note: Before proceeding with this service check, make sure you have the correct system board installed in theprinter. The system board has a label with an board ID and barcode. Use the first eight numbers to identify theboard with the part number in the table below:This error code indicates a mismatch between the system board and the interconnect card.Model Board bar code Corresponds to P/N…4061-000 (non-network) Q0016021 40X01404061-010 (network) Q0016001 40X01414061-200 (non-network) Q0016022 40X01424061-210 (network) Q0016002 40X01434061-400 (non-network) Q0016023 40X01444061-410 (network) Q0016003 40X0145FRU Action1 Interconnect card assembly If the interconnect card assembly has been recently replaced, go tostep 3. If the interconnect card assembly has not been recentlyreplaced, contact the next level of support.2 System board If the system board has been recently replaced, go to step 4. If thesystem board has not been replaced, contact the next level ofsupport.3 Interconnect card assembly Replace the current interconnect card assembly with the originalinterconnect card assembly. “Interconnect card assemblyremoval” on page 4-54.If the error remains, go to step 5.
