Lexmark T642 Service Manual - Page 117

4061-xx0 950.00 through 950.29 EPROM mismatch failure Warning: When replacing any one of the following components: • Operator panel assembly (or upper front cover) • System board assembly • Interconnect card 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. Never replace two or more of the components listed above without a POR after installing each one or 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 can not be used in another printer. It must be returned to the manufacturer. This error code indicates a mismatch between the operator panel board and the interconnect card. FRU 1 Interconnect card 2 operator panel board 3 Interconnect card 4 operator panel board 5 Interconnect card 6 Operator panel Action If the interconnect card been recently replaced, go to step 3. If the card has not been replaced go to step 2. If the operator panel board has been recently replaced, go to step 4. If the operator panel board has not been replaced, contact your next level of support. Replace the current interconnect card assembly with the original interconnect card assembly. See "Interconnect card assembly removal" on page 4-53. If the error remains, go to step 5. Replace the current operator panel board with the original operator panel board. See "Operator panel board removal" on page 4-66. If the error persists, go to step 6. Replace the original interconnect card assembly with a new and not previously installed interconnect card assembly. If the error remains, contact your next level of support. Replace the original operator panel board with a new and not previously installed interconnect card assembly. If the error remains, contact your next level of support. Diagnostic information 2-77