Lexmark C520 Service Manual - Page 65
EPROM mismatch failure, 30-950.60 EPROM mismatch failure
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5022-xxx 950.00-950.29 EPROM mismatch failure Warning: When replacing any one of the following components: • Operator panel assembly • System card • Printhead 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. Warning: Never install and remove components listed above as a method of troubleshooting components. Once a component has been installed in a printer, it cannot be used in another printer. It must be returned to the manufacturer. This error code indicates a mismatch between the operator panel assembly and the system card. Step Questions / actions 1 Has the operator panel assembly been recently replaced? Yes Replace the operator panel assembly with a new, and not previously installed operator panel assembly. See "Operator panel assembly removal" on page 4-23. No Replace the system card with a new, and not previously installed system card. See "System card removal" on page 4-79. 950.30-950.60 EPROM mismatch failure Warning: When replacing any one of the following components: • Operator panel assembly • System card • Printhead 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. Warning: Never install and remove components listed above as a method of troubleshooting components. Once a component has been installed in a printer, it cannot be used in another printer. It must be returned to the manufacturer. This error code indicates a mismatch between the system card and the smart chip card. Models C52x only Step Questions / actions 1 Has the smart chip card been recently replaced? Yes No Replace the smart chip card with a new, and not previously installed smart chip card. See "Smart chip card removal-models C52x only" on page 4-78. Replace the system card with a new, and not previously installed system card. See "System card removal" on page 4-79. 2-50 Service Manual