Lexmark C720 Service Manual - Page 113

5024-001 Symptom The Main Motor (MM) makes noise or continuously runs The Transfer Drum is making noise when rotated or it does not rotate at all The Transfer roll is not transferring images or does not turn No power Waste Toner Feed problems Fans not working or making noise Paper does not separate from Transfer Drum Print/Image problems Printer does not stop when Exit Tray is full OPC Belt Cartridge does not rotate or makes noise Wrong Color Print Action Go to "911-Main Motor (MM) Service Check" on page 2-47. Go to "990-Transfer Drum Encoder Sensor (HPSEN) Service Check" on page 2-61. Go to "White Band Service Check" on page 2-100. Go to "Printer No Power Service Check" on page 2-74. "Waste Toner Feed Service Check" on page 2-76. See "Service Error Codes" on page 2-2. Find the failing fan and follow the action to be taken. Go to "Paper Discharge Service Check" on page 2-73. Go to "Print Quality Symptom Table" on page 2-34. Go to "Operator Messages" on page 2-9. Go to "OPC Belt (Photo Developer) Cartridge Drive Service Check" on page 2-70. Ensure the developer clutch connectors (DCLK, DCLY, DCLM, DCLC) on the IOD2 P.W.B. board are plugged into the correct position. Note: See the wiring diagram for proper connection. Diagnostic Information 2-33