Lexmark E320 Service Manual - Page 102
Engine board service check (E320/E322), Connector locations on, Connector
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4500 Engine board service check (E320/E322) FRU Engine board Action Ensure +24 V dc from the LVPS board to the engine board. 1. Turn off printer. 2. Disconnect the fuser lamp cable plug from the LVPS board. See "Connector locations " on page 5-1 for more information. 3. Disconnect the LVPS/engine board jumper cable from the engine board. See "Connector locations " on page 5-1 for more information. 4. Turn printer on. • If voltage is correct, ensure J12-power supply unit (PSU) is properly seated in the J12-PSU connector on the engine board. • Check for +24 V dc on the cable. • If voltages are not present or incorrect, see the "Low voltage power supply (LVPS) service check " on page 2-76 for more information. Note: With all cables connected, the printer should complete POST within approximately 12-15 seconds in the following sequence: 2-72 Service Manual