4-44 Phaser 6130 Color Laser Printer Service ManualGeneral TroubleshootingAbnormal Noise and Electrical ProblemsAbnormal Noise When Power is Turned OnTroubleshooting Reference TableApplicable Parts Wiring and Plug/Jack Map References■ Imaging Unit (PL4.1.21)■ Fuser (PL6.1.1)■ Transfer Unit (PL6.1.7)■ Sub Drive Assembly (PL7.1.1)■ Main Drive Assembly (PL7.1.2)Troubleshooting Procedure TableStep Actions and Questions Yes No1 Perform the Main Motor test (page 4-27):Service Mode > Engine Diag > Motor Test> Main Motor FULL2.Is the noise still present?Go to step 2. Go to step 5.2 1. Reseat the Imaging Unit.2. Perform the Main Motor test (page 4-27):Service Mode > Engine Diag > MotorTest > Main Motor FULL2.Is the noise still present?Go to step 3. Complete3 1. Reseat the connectors on the TransferUnit.2. Perform the Main Motor test (page 4-27):Service Mode > Engine Diag > MotorTest > Main Motor FULL2.Is the noise still present?Go to step 4. Complete4 1. Reseat the Main Drive Assembly.2. Perform the Main Motor test (page 4-27):Service Mode > Engine Diag > MotorTest > Main Motor FULL2.Is the noise still present?Try replacingone afteranother:■ ImagingUnit(page 8-8)■ TransferUnit(page 8-41)■ Main DriveAssembly(page 8-52).Complete5 Perform the Sub Motor test (page 4-28):Service Mode > Engine Diag > Motor Test> Sub Motor FULL2.Is the noise still present?Go to step 6. Check theinstallationsituation ofprinter.