Lexmark E320 Service Manual - Page 101

4500 Dead machine service check CAUTION: Check the AC line voltage. The voltage should be within the following limits: • 100 Volts alternating current (V ac)-127 V ac for the low voltage model printer • 200 V ac-240 V ac for the high voltage model printer FRU Low voltage power supply fuse (LVPS) Power switch Action Unplug the printer and check the fuse on the LVPS board for continuity. • If open, replace with appropriate fuse. - If fuse opens again, see "Low voltage power supply (LVPS) service check " on page 2-76 for more information. • If not open, see power switch below. Restore power and turn on the printer power switch. Check for AC line voltage in the switch cable, CN1 (LVPS board), between pin 1 and ground and between pin 3 and ground. • If line voltage is present, see the "Cover interlock switch service check (E320/E322) " on page 2-69 or "Cover interlock switch service check (E220/ E321/E323) " on page 2-70 for more information. • If line voltage is not present on CN1, replace the power switch or check/correct missing line voltage. Diagnostic information 2-71