Lexmark Optra C710 Service Manual - Page 95

5016-001 Symptom Print quality - Random marks. Print quality - Toner on backside of printed page. Print quality - Vertical black bands on edge of copy. Action Go to "Random Marks Service Check" on page 2-90. Go to "Toner on Backside of Page Service Check" on page 2-91. Go to "Black, Color Lines or Bands Service Check" on page 2-83. Covers Interlock Symptom Table Symptom Close Door displays when all covers are not properly latched. Action Go to the "Cover Interlock Service Check" on page 2-45. Duplex Unit Symptom Table Symptom Paper feed problem with duplex. Paper jams at paper removal tray. Paper skews in the duplex option. Paper fails to pass from lower option through the duplex option. Action Go to the "Duplex Unit Option Service Check" on page 2-120. Diagnostic Information 2-29