2-50 Service Manual
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.
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 Yes No
1 Has the operator panel assembly been
recently replaced?
Replace the operator panel
assembly with a new, and
not previously installed
operator panel assembly.
See “Operator panel
assembly removal” on
page 4-23.
Replace the system card
with a new, and not
previously installed system
card. See “System card
removal” on page 4-79.
Step Questions / actions Yes No
1 Has the smart chip card been recently
replaced?
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.
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