Lexmark Optra S Service Manual - Page 82

4059-XXX FRU Action 4 LVPS Interconnect Board Envelope Conditioner Cable Check the +42 V dc test point on the fuser control board. If the voltage is incorrect, check the continuity of the envelope conditioner cable. If the cable does not measure continuity, replace the cable. If the cable measures continuity, check the voltage at J1-2 on the interconnect board. The voltage measures approximately +42 V dc. If incorrect, check the voltage at CN3-18 on the LVPS. It measures approximately +42 V dc. If incorrect, replace the LVPS. If correct, replace the interconnect board assembly. 5 Fuser DC Cable (Engine Check for continuity of the DC fuser board to Fuser Board cable) cable that is attached between J2 on Engine Board the engine board and J1 on the fuser control board. If the cable does not measure continuity, replace the cable. If the cable measures continuity, replace the engine board. 2-55 4059 Service Manual