4-8 Phaser 4500/4510 Service ManualGeneral Troubleshooting4 1. Remove the Optional 550-Sheet PaperFeeder.2. Turn ON the printer power.Do both fans rotate when the power isturned ON?Go to“Optional550-SheetFeeder PWBA(Tray 3)” onpage 4-39,“Optional550-SheetFeeder PWBA(Tray 4)” onpage 4-40“Optional550-SheetFeeder FeedClutchAssembly” onpage 4-46,and “Optional550-SheetFeeder TurnRoller Clutch”on page 4-48.Go to step 5.5 1. Remove the duplex unit (page 8-95).2. Turn ON the printer power.Do both fans rotate when the power isturned ON?Go to “DuplexUnit PWBA”on page 4-49,and “DuplexUnit Motor”on page 4-50.Go to step 6.6 1. Remove the HVPS Shield Plate(page 8-72).2. Verify that P/J10 is connected to theHVPS/engine logic board.3. Remove the print cartridge.4. Check for +24 VDC at the followingpoints:■ P/J10-1 <=> P/J10-4■ P/J10-2 <=> P/J10-5■ P/J10-3 <=> P/J10-6■ P/J10-8 <=> P/J10-7Does the voltage at each point measure+24 VDC?Go to step 7. Go to “PrintEngineTrouble-shooting” onpage 4-11.7 1. Perform steps 1-3 of the 150-sheetfeeder assembly removal (page 8-15).2. Disconnect P/J243 (see the registrationclutch removal on page 8-19).3. Remove the print cartridge.Does the main fan rotate when the poweris turned ON?Go to“RegistrationClutch” onpage 4-29.Go to step 8.Troubleshooting Procedure (continued)Steps Actions and Questions Yes No
