Phaser 6121MFP Service Manual 4-27General TroubleshootingControl Panel Indicators Do Not LightNo Control Panel or Faulty Indicator lights.Initial Actions• Remove system power and reboot.• View any control panel activity.Troubleshooting Reference TableApplicable Parts Wiring and Plug/Jack References■ Image Processor Board,PL13.0.29/30■ Control Panel Board, PL2.0.5■ Power Supply 1, PL13.0.17■ Board Locations (page 2-10)■ Map 1 - Engine Control Board Plug/JackLocator (page 10-5)■ Power Supply Wiring (page 10-17)Troubleshooting Procedure TableStep Action and Questions Yes No1 Is power source voltage being appliedto connector CN3 of the Power Supply?Go to step 2. Check wiringfrom the ACpower plugthrough thePower Switchto CN1 (pin 1)of the PowerSupply. Ifproblempersists, go tostep 2.2 Are fuses (F1 and F2) on the PowerSupply conducting?Go to step 3. Replace thePower Supply(page 8-72). Ifthe problempersists, go tostep 3.3 Is P/J1 on the Engine Control Boardseated properly?Go to step 4. Reseat theconnector. Ifthe problempersists, go tostep 4.4 Is P/J10 on the Image Processor Boardproperly connected?Go to step 5. Reseat theconnector. Ifthe problempersists, go tostep 5.
