Lexmark E310 Service Manual - Page 38
Engine Board, LVPS Board
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4044-XXX FRU Model E312 LVPS Board Model E312 Engine Board Action Disconnect the LVPS cable from connector CN7 on the engine board. Go to the "LVPS (model E312)" on page -14. Check the voltage measurements at connector CN503. If any voltage measurements are incorrect, replace the LVPS. Reconnect the LVPS cable to connector CN7 on the engine board. Disconnect all other cables from the engine board. Go to the "Engine Board (model E312)" on page -9. Check the voltage measurements at each connector. If any voltages are incorrect, replace the engine board. If all voltages are correct, reconnect all the cables to the engine board one at a time. Check the voltage meausrements on the engine board each time you connect a cable. If a voltage measurement is incorrect after connecting one of the cables, replace the FRU that you connected. 2-16 Service Manual
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