Xerox Phaser 7400

3-96 Phaser 7400 Color Printer Service Manual
Engine Failure
An Engine Control Board error is detected.
Applicable Status Codes:
Code U0: Engine ROM Failure
Code U1: Engine RAM Failure
Code U2: Engine EEPROM Failure
Code U3: Engine EEPROM Missing Failure
Code U4: Engine SRAM Failure
Code U5: Engine Control Failure
Initial Actions:
■ Cycle the printer's power.
■ If the problem persists follow the procedure below.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ Engine Control EEPROM
■ Engine Control Board, PL1.1.4
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1
Cycle power to the printer.
Does the error still appear?
Go to Step 2. Complete
2
Perform an NVRAM Reset.
Does the error still appear?
Replace the
EEPROM for U2 or
U3 errors.
Otherwise, replace
the Engine Control
Board.
Complete