Lexmark C720 Service Manual - Page 123
—Magenta/Cyan Developer Solenoid Service Check, Developer Solenoid PSL MC
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5024-001 906-Magenta/Cyan Developer Solenoid Service Check FRU 1 Check Connector Check Cable Harness 2 Developer Solenoid Assembly (PSL KY/MC) Front Cover Unit 3 IOD2 P.W.B. Board 4 Main Engine (MCTL P.W.B.) Boards Action Ensure the magenta/cyan solenoid connector ECNS on the IOD2 P.W.B. board is connected. Ensure the cable harness for (PSL MC) is not broken. Replace any damaged parts. Check the voltage at (PSL MC) ON-N. Does the voltage drop below +24V between ECN5-7 and ECN2-6? • If the voltage drops below +24V, replace the DE solenoid assembly. • If this does not fix the problem, replace the front cover unit. Check the voltage between ECN1-6 and ECN2-8. If the voltage jumps to +24V, replace the IOD2 P.W.B. board. If the problem still exists, replace the main engine (MCTL P.W.B.) board. Developer Solenoid (PSL MC) Diagnostic Information 2-43
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