Lexmark T642 Service Manual - Page 68
Upper front cover removal, on Upper front, cover removal
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4061-xx0 Service error codes (9xx.xx) (continued) Error code Sub codes Display text 953 .00 Description Action Replace the operator panel board or upper front cover. See "Upper front cover removal" on page 4-11 or "Upper front cover removal" on page 4-11. 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. 2-28 Service Manual
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