Lexmark Optra C710 Service Manual - Page 115

5016-001 FRU 2 Developer/Paper Feed Motor Assembly (M2) Developer/Paper Feed Motor Cable Engine Board Action Check the voltages on connector CON 1 on the developer/paper feed motor board. All voltages are approximate values: Pin # 1 2 3 4 5 6 7 8 9 10 Voltage CS ROIR GND +5 V dc Lo P/S PGND PGND +24 V dc +24 V dc Motor Running 0 V dc 0 V dc 0 V dc +5 V dc 0 V dc 0 V dc 0 V dc 0 V dc +24 V dc +24 V dc Motor Static +5 V dc 0 V dc 0 V dc +5 V dc +5 V dc +5 V dc 0 V dc 0 V dc +24 V dc +24 V dc If the voltage on pin 4, 9 or 10 are incorrect, check continuity of the cable. • If correct, disconnect CON 1 from the board assembly and check the voltages on the cable connector. • If incorrect, check continuity of the cable. • If incorrect, replace the cable. • If correct, replace the engine board. • If the voltages on the cable connector are correct, replace the developer/ paper feed motor assembly. If the voltages on pins 1, 5 and 6 always measure approximately +5 V dc, replace the developer/paper feed motor assembly. If the voltages always measure approximately 0 V dc, check the continuity of the cable. • If incorrect, replace the cable. • If correct, replace the engine board assembly. Diagnostic Information 2-49