Lexmark C720 Service Manual - Page 160

5024-001 FRU 7 Lower Feed Rear Cover Assembly 8 Lower Feed Paper Guides 9 • Lower Feed Transport Roller Clutch (DP KCL) • IOD1 P.W.B. Board Action Check the lower feed transport roller, in the lower feed rear cover assembly, for dirt or damage and replace, if necessary. Note: This is used for the optional duplex unit. Ensure the lower feed paper guides are clean and not damaged and replace, as necessary. If the duplex unit is attached, the lower feed transport clutch (DPKCL) is activated to recycle paper through the printer for duplexing. • Ensure the lower feed transport clutch is activated during duplex operations. • If the clutch does not activate, ensure its connectors are properly connected and replace, if necessary. • Ensure DCN8 on the IOD1 P.W.B. board is connected and replace the IOD1 P.W.B. board, if necessary. 2-80 Service Manual