Install Or Reseat Transfer Unit; Replace Transfer Unit - Xerox 7300B - Phaser Color Laser Printer Service Manual

Install or Reseat Transfer Unit

Troubleshooting Procedure Table
Steps Actions and Questions
1 Is the transfer unit installed and seated
properly?
2 Check the Transfer Unit voltage contacts
for corrosion, dirt or debris.

Replace Transfer Unit

Troubleshooting Procedure Table
Steps Actions and Questions
1 Use service diagnostics to check the life
of the Transfer Unit.
Is the Transfer Unit at or near end-of-life?
2 Verify that all other errors have been
cleared on the printer and install a new
Transfer Unit.
Did the fuse blow?
3 Check the wiring harness from the
Imaging Unit Sensing Board to the
Engine Controller Board.
Is the wiring defective?
Error Messages and Codes
Yes
Go to step [2].
Clean with a pencil
eraser.
Yes
Have the customer
replace the
Transfer Unit.
Replace the
Engine Controller
Board EEPROM.
Replace the wiring
harness.
No
Reseat the
transfer unit.
Replace in the
following order:
Engine Controller
Board.
High Voltage
Power Supply and
wiring harness.
No
Go to step [2].
Go to step [3].
Replace the
Engine Controller
Board.
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