Xerox Phaser 6200B, Service Manual

Page: 87 / 386

Error Messages and Codes 69
Density Sensor Failure or Low Density Failure
Code 12:
An error was detected in the toner dispense system.
Code 13, 14, 15:
An error was detected in the Density Sensor.
Code 16: This is a generic density sensor error that is generated when a code 12, 13,
14 or 15 is not specifically triggered.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack Map References
CTD (ADC) Sensor Assembly , PL 5.1.11 "Xerographics 1" on page 360
Troubleshooting Procedure Table
Steps Actions and Questions Yes No
1 Clean the CTD (ADC) Sensor to remove
any toner build up.
Does this fix the problem? Complete Go to step [2].
2 Use service diagnostics to test the ADC
Sensor.
Does the sensor function correctly? Go to step [4]. Go to step [3].
3 Does the error recur after the CTD (ADC)
Sensor has been replaced? Go to step [4]. Complete
4 Check the following for evidence of fault
or damage:
Transfer Roller Assembly PL 8.1.12
Imaging Unit PL 9.1.3 Replace the parts
concerned. Go to step [5].
5 Does the error recur after the Laser
windows have been cleaned with a dry
lint free cloth? Go to step [6]. Complete
6 Replace the Laser Unit.
Does the error still occur? Go to step [7]. Complete
7 Troubleshoot using the wiring diagram
"Xerographics 1" on page 360.
Does the printer function correctly after
replacing any defective parts? Complete Go to step [8].
8 Replace the Transfer Roller Assembly.
Does the error still occur? Replace the
Engine Control
Board, RRP 12.7. Complete