3-64 Phaser 6250 Color Laser Printer Service ManualDensity Sensor FailureCode 13: Density Sensor Failure.Code 14: Density Limit Over Output.Code15: Density Limit.Code 16: This is a generic density sensor error that is generated when a code 13, 14or 15 is not specifically triggered.Troubleshooting Reference TableApplicable Parts Wiring and Plug/Jack Map ReferencesCTD (ADC) Sensor Assembly , PL 5.1.11 “Xerographics 1” on page 10-23Troubleshooting Procedure TableSteps Actions and Questions Yes No1 Clean the CTD (ADC) Sensor to removeany toner build up.Does this fix the problem?Complete Go to Step 2.2 Use service diagnostics to test the CTD(ADC) Sensor.Does the sensor function correctly?Go to Step 4. Go to Step 3.3 Replace the CTD (ADC) Sensor, seepage 8-42.Does the error recur after the CTD (ADC)Sensor has been replaced?Go to Step 4. Complete4 Check the CTD (ADC) Harness forcontinuity:See “Xerographics 1” on page 10-23.Go to Step 5. Replace theCTD (ADC)HarnessAssemblyPL 5.1.10.5 Check the Harness Assembly Front 1A forcontinuity.See “Xerographics 1” on page 10-23.Replace theEngine ControlBoard,page 8-107.Replace theHarnessAssembly Front1A PL 13.1.7.