Xerox 6250N Service Manual - Page 155
Controller to Engine Communications Failure - phaser nvram error
UPC - 095205770407
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Troubleshooting Procedure Table Step 6 Actions and Questions Check continuity of Harness Assembly EEPROM between J144 J140. Yes No Replace the Engine Control Board, page 8-107. Replace EEPROM Harness Assembly, PL 13.1.10. Controller to Engine Communications Failure Code 81: This is a communication failure between the Image Processor Board and the engine control board. Note When replacing the Image Processor Board, the NVRAM, memory, configuration chip ('i' button), and hard drive must be transferred to the new Image Processor Board. When replacing the Engine Control Board the Store/ Restore functions can be used to transfer data from the NVRAM to the new board instead of transferring the NVRAM. Troubleshooting Procedure Table Step 1 2 Actions and Questions Yes Cycle power to the printer. Is the error cleared? Complete Is the error cleared by reseating the Complete Image Processor Board to Engine Control Board. 3 Is the error cleared after replacing the Image Processor Board? See note above. Complete No Go to Step 2. Replace the Image Processor Board, page 8-110. Replace the Engine Control Board, page 8-107. 3-74 Phaser 6250 Color Laser Printer Service Manual
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