KX-NTV160NE (serv.man2) - Panasonic PBX Service Manual (repair manual). Page 9

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9
KX-NTV160 Series  
7 Troubleshooting Guide
7.1.
No power supplied by PoE
7.2.
No image
1. Connect Ethernet cable with PoE to Main Board.
2. Turn the multimeter to DCV setting.
3. Measure the voltage between TP20_5V9V  and TP14_GND.
4. Check if the value is DC+5V (+4.75V ~ +5.25V).
5. Disconnect Ethernet cable with PoE. 
Malfunction
Main Board exchange.
1. Check Main Board PCB’A  (J1)Connect.
2. Check  if Main Board PCB'A _U1 is damaged.
3. Check if Sensor board functions normally.
*U1-(SOC, VVTK8112, VATICS)
*J1-(PIN HEADER, T-DPH20SD2GT-C0, DISNT)
Malfunction
Main Board exchange at first.
If trouble is not closed yet, Sensor Board need to exchange too.
J1 
U1 
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