OKIFAX 5700/5900 7 - 107.8 Auto Reception FailureStartSolved?NoYesNoCheck the following items:1. Placed in the manual receive mode?2. START key pressed to answer the call?3. Closed network is ON and the remotephone number is not registered inone-touch key or two-digit auto dialcode?Your handset telephonerings when a call arrives?Return to section 7.1Replace MCNT (R76) Board.Manual reception OK?Solved?Ringing signal isdetected at Pin 4 of CN3(NCU)?Replace NCU Board.Solved?Check that the ringing signalmeets the specification ofthe fax machine.(See Item of Table)YesNoNoYesYesYesYesNoPlaced in the auto receivemode? If not, place thefax machine in that modeby pressing AUTO REC key.Solved?Set CLOSED NETWORK(Machine settings No. 21)to OFF.YesNoNo1. Check the handset oftelephone set.2. Check the line.3. Check the exchange.