Phaser 6180MFP Multifunction Printer Service Manual 4-109General TroubleshootingHigh Pitched NoiseThere is high pitch sound coming from the printer.Troubleshooting Reference TableApplicable Parts Wiring and Plug/Jack Map References■ MCU Board, PL9.2.13■ LVPS, PL9.2.14■ “Map 4 - LVPS and MCU Board” onpage 10-13■ “DC Power Supply” on page 10-24Troubleshooting Procedure TableStep Actions and Questions Yes No1 1. Check for abnormal noise.2. Is there abnormal noise from the motorswhen turning On the printer?Go to step 2. Go to step 4.2 1. Turn the printer power Off.2. Disconnect the power cord and wait forone minute.3. Reseat the LVPS connectors.4. Turn the printer power On. Is the printerworking?Complete. Go to step 3.3 1. Check the MCU Board for correctinstallation. Reseat the MCU Board(page 8-88).2. Is the printer working?Complete. Replace theMCU Board(page 8-88).4 1. Connect the printer power cord toanother electrical outlet.2. Turn the printer power On. Is the printerworking?Complete. Go to step 5.5 1. Turn the printer power Off.2. Check the power cord connection.Reconnect the printer power cord.3. Is the printer working?Complete. Go to step 6.6 1. Turn the printer power Off.2. Disconnect the power cord and wait forone minute.3. Reseat the LVPS connectors.4. Turn the printer power On. Is the printerworking?Complete. Go to step 7.7 1. Turn the printer power Off.2. Disconnect the printer power cord andwait for one minute.3. Reconnect the power cord.4. Turn the printer power On. Is the printerworking?Complete. Replace theLVPS(page 8-83).
