Lexmark X464de Service Manual - Page 76
Dead machine service check, CAUTION, Voltage
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7014-xxx Dead machine service check CAUTION: Check the AC line voltage. The voltage should be within the following limits: • 100 V ac (volts alternating current)-127 V ac for the 110 V printer • 200 V ac-240 V ac for the 220 V printer FRU LVPS/HVPS Action Unplug the printer. Remove the LVPS/HVPS, and check the fuses for continuity. • If open, then replace the LVPS/HVPS. • If not open, then check the switch continuity across its conductors with the switch on. Turn the switch off. Plug the AC line into the LVPS/HVPS and switch unit on. Note: Voltages are exposed at several places on the board. Do these verifications, and then unplug the AC cord from the power supply: Pins Voltage CN201-6, 17, +24 V dc 19 CN201-10, 12, Ground 14, 16, 18 CN201-1,3, 5, +5 V dc 11,13, 15 • If voltages are not correct, then replace the LVPS/HVPS. • If voltages are correct, then check the engine board. See "Engine board service check" on page 2-36. • If the engine board checks out ok, perform the controller board service check. 2-38 Service Manual