Xerox 6250N Service Manual - Page 326
Engine Control Circuit Board (PL12.1.1), NVRAM Access/MCU NVRAM Store/Restore
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Page 326 highlights
Engine Control Circuit Board (PL12.1.1) Caution Critical printer specific information is stored in the engine NVRAM. Save this information to the Image Processor Board using the Service Diagnostic NVRAM Access/MCU NVRAM Store/Restore function. Detailed information is provided in "Service Diagnostic Tests" on page 3-9. If the printer is not functional, or optionally even if it is, restore the information by swapping the NVRAM following board replacement. 1. If the printer is functional, save the information in the engine NVRAM using the Service Diagnostic NVRAM Access/MCU NVRAM Store function before starting disassembly. Caution Observe proper ESD procedures (page 8-3) when removing any circuit board from the printer. 2. Remove the Image Processor Board (page 8-110). 3. Remove the Card Cage (page 8-103). 4. Remove the Housing Assembly Contact (page 8-106). 5. Remove the 4 screws securing the Cover Engine Control Board to the Card Cage. Service Parts Disassembly 6250-226 8-107
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