Xerox 7750DXF - Phaser Color Laser Printer - Engine Logic Board NVRAM Failure, Code 83; Controller to Engine Logic Board Time Failure, Code 84; Engine Logic Board Micro Pitch Failure, Code 85; High-Voltage Power Supply Failure, Code 86

3-40 Phaser 7750 Printer Service Manual
Engine Logic Board NVRAM Failure, Code 83
Controller to Engine Logic Board Time Failure, Code 84
Engine Logic Board Micro Pitch Failure, Code 85
High-Voltage Power Supply Failure, Code 86
Troubleshooting Procedure
Step Actions and Questions Yes No
1
1. Cycle power to the printer to clear the
error.
2. Did this clear the error?
Complete. Replace in the
following order:
■ engine control
board
■ image
processor board
Troubleshooting Procedure
Step Actions and Questions Yes No
1
1. Cycle power to the printer to clear the
error.
2. Did this clear the error?
Complete. Replace the
engine control
board.
Troubleshooting Procedure
Step Actions and Questions Yes No
1
1. Cycle power to the printer to clear the
error.
2. Did this clear the error?
Complete. Replace in the
following order:
■ engine control
board
■ image
processor board
Troubleshooting Procedure
Step Actions and Questions Yes No
1
1. Cycle power to the printer to clear the
error.
2. Did this clear the error?
Complete. Replace in the
following order:
■ T3 HVPS
■ image
processor board