Lexmark Optra S Service Manual - Page 80

4059-XXX FRU Action 3 LVPS Interconnect Board If the +42 V dc test point does not measure approximately +42 V dc, check the continuity of the cable connected between J3 on the fuser control and J1 on the interconnect board. If the cable does not measure continuity, replace the cable. If the cable measures continuity, check the voltage at CN3-18 on the LVPS. The voltage measures approximately +42 V dc. If the voltage is correct, replace the interconnect board assembly. If the voltage is incorrect, replace the LVPS. 4 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. 2-53 4059 Service Manual