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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. 

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)

Main Board exchange at first.
If trouble is not closed yet, Sensor Board need to exchange too.

J1 

U1 

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1. Check if Main Board PCB'A _U26, U14 is damage.

*U26-(IC,FM1288-GE410,FORTEMEDIA)
*U14-(IC,TPA2011D1YFF,TI)

Main Board exchange at first.
If trouble is not closed yet, Front cover Assy need to exchange too.

1. Check if Main BD PCB'A_ D19 is damaged.

2. Measuring if input voltage of BT2 is DC3.3V by multimeter.

*D19-(DIODE, BAT54C2-0-T5-G, CYSTEK)
*BT2-
   (GCAP, 0.2F, 3.3V, -20~+80%, ELNA KL series)

BT2 pin: 260°C±5°C
soldering time: 2Sec±0.5Sec

Main Board exchange.

1. Check if Main Board PCB’A _U1, U6 is damaged.

*U1-(SOC, VVTK8112, VATICS)
*U6-(IC, KSZ8051MNL, MICREL)

Main Board exchange.

 

U26 

U14 

D19 

BT2 

U6 

U1 

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1. Check if Main Board PCB’A _U1 is damage.

*U1-(SOC, VVTK8112, VATICS)

Main Board exchange.

U1 

12

A. Remove screw of unit body and wall mount case (red circle).
B. Take out camera unit from wall mount case.

A. Remove 2 screws of back cover.

A. Open front cover from back cover.
B. Remove connector of MIC and speaker (circle in the picture).