3-132 Phaser 6180MFP Multifunction Printer Service ManualError Messages and CodesLaser ErrorAn error was detected in the Laser Unit. The following troubleshootingprocedure applies to this error.Applicable Chain Link■ Chain Link 061-370: Laser Error (IOT ROS Failure)Initial Actions■ Cycle printer power.■ If the problem persists, follow the procedure below.Troubleshooting Reference TableApplicable Parts Wiring and Plug/Jack Map References■ Laser Unit, PL5.1.12■ MCU Board, PL9.2.13■ “Map 2 - Laser Unit and Feeder” onpage 10-11■ “Map 4 - LVPS and MCU Board” onpage 10-13■ “Laser Unit” on page 10-32Troubleshooting Procedure TableStep Actions and Questions Yes No1 1. Check the Laser Unit for correctinstallation.2. Is the Laser Unit correctly installed?Go to step 3. Reinstall theLaser Unit(page 8-52).Go to step 2.2 Does the error still occur when theprinter is turned On?Go to step 3. Complete.3 1. Check the wiring harness connectorP/J12 on the MCU Board.2. Is the connector securelyconnected?Go to step 5 Reconnect theconnector.Go to step 4.4 Does the error still occur when theprinter is turned On?Go to step 5. Complete.5 1. Check the MCU Board for correctinstallation.2. Is the MCU Board correctlyinstalled?Go to step 7. Reseat the MCUBoard(page 8-88).Go to step 6.6 Does the error still occur when theprinter is turned On?Go to step 7. Complete.