Error Codes and Messages Troubleshooting ProceduresPhaser® 6120 Color Laser Printer Service Manual4-1917: Toner Carousel FailureFuser Failures:18: Fuser Warm-Up Failure19: Fuser Low Heating Roller Temperature1A: Fuser High Heating Roller Temperature1B: Fuser Faulty ThermistorRelevant Electrical PartsToner Carousel Motor (M2)Toner Carousel Positioning Sensor (PC3)PWB-A (Engine Control Board)Step ActionWIRING DIAGRAMControl SignalLocation (ElectricalComponent)1 Check the M2 connector for properconnection and correct as necessary.- -2 Check M2 for proper drive coupling andcorrect as necessary.- -3 Check the PWB-A connector for properconnection and correct as necessary.- -4 PC3 sensor check. PWB-A PJ5A-11 (ON) 4-C5 M2 operation check. PWB-A PJ5A-1∼4(Pulse Output)4-B6 Change PWB-A. - -Relevant Electrical PartsFuser PWB-A (Engine Control Board)Power Unit (PU)Step ActionWIRING DIAGRAMControl SignalLocation (ElectricalComponent)1 Check that the input voltage to the printermatches the configuration of the engine(110/220 V)2 Check the Fusing Unit for correct installation(whether it is secured in position).- -3 Check the Fusing Unit, LVPS (PU), andPWB-A for proper connection and correct asnecessary.- -4 Check the lever and position of the SafetySwitch (S2) and correct as necessary.- -5 Change the Fusing Unit. - -6 Change PWB-A. - -7 Change LVPS (PU). - -
