General Sensor Failure - Xerox Phaser 7500 Service Manual

Error Messages and Codes

General Sensor Failure

Initial Actions
3-28
• Check the paper path for debris.
• Power cycle the printer.
• If the problem persists, follow the procedure below.
Troubleshooting Procedure
Step Actions and Questions
1 Perform the appropriate Sensor
tests in Diagnostics.
Does the Sensor operate properly?
2 Check the connection of the
relevant Sensor.
Check the connection between the
relevant Sensor and the MCU PWB.
Is the connector properly
connected?
3
Check the harness conductivity
Is the harness between the
relevant Sensor and the MCU PWB
conducting normally and not
grounded?
4
Check the voltage that is supplied
to the relevant Sensor.
Refer to "Plug/Jack and Wiring
Diagrams" on page 10-1
the connection to the relevant
parts and measure the voltage of
the PWB Connector that the Sensor
is connected to.
Is a voltage being output?
Yes
Replace the
PWB that the
Sensor is
connected to.
Go to step 3.
Go to step 4.
Replace the
Sensor.
to check
Phaser 7500 Printer Service Manual
No
Go to step 2.
Reconnect the
wiring harness
connector.
Replace the
wiring harness.
Refer to "+5 VDC
Power
Troubleshooting
" on page 4-15.