Lexmark C720 Service Manual - Page 154
Printer No Power Service Check
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5024-001 Printer No Power Service Check FRU 1 Line Voltage 2 AC Line Cord 3 • Low Voltage Power Supply (LVPS) • Main Engine (MCTL P.W.B.) Board Action Note: If any paper handling options (250 tray or duplex unit) are installed, disconnect or remove the options and check the base printer for correct operation. Check the line voltage. If the line voltage is incorrect, inform the customer. Check the line cord for damage. Check the continuity of the line cord and replace, if necessary. Turn the printer Off and then back On. If you do not hear any activation of motors or the operator panel does not display anything: • Check for proper connection of connectors ACN12, ACN3 on the low voltage power supply (LVPS). • Check for proper connection of connectors POCN and 13CN on the main engine (MCTL P.W.B.) board. • Replace the low voltage power supply. • Replace the main engine (MCTL P.W.B.) board. 2-74 Service Manual
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