Close Top Cover - Xerox 7300B - Phaser Color Laser Printer Service Manual

Close Top Cover

Troubleshooting Procedure Table
Steps Actions and Questions
1 Cycle power to the printer and open and
close the top cover.
Does the error still appear?
2 Use service diagnostics to test the top
cover interlock switch.
Does the switch operate correctly?
3 Visually inspect the switch for defects,
damage or possible debris which could
prevent the printer for recognizing the top
cover is closed.
Is the switch free from defects?
4 Check to see if the Top Cover actuator,
located on the Top Cover Inner frame, is
broken or damaged.
Is the actuator damaged or broken?
5 Close the top cover and verify +34 volts
on the Engine Controller Board at the
COVOPEN Pin 1.
6 Check for +34 volts on the Engine
Controller Board at the COVOPEN Pin 3.
7 Verify the Low Voltage Power Supply to
the Power connector on the Engine
Controller Board is supplying +34 volts to
pins 12, 13, and 14.
2-48
Yes
Go to step [2].
Go to step [3].
Go to step [4].
Replace the Top
Cover Inner
Frame.
Go to step [6].
Replace the
Engine Controller
Board.
Replace the
Engine Controller
Board.
Phaser 7300 Color Printer Service Manual
No
Complete
Go to step [5].
Clean or replace
the Top Cover
Interlock Switch.
Replace the
Engine Controller
Board.
Go to step [7].
Replace the Top
Cover Interlock
Switch.
Replace the Low
Voltage Power
Supply and/or
wiring harness.