Panasonic KX-NTV150NE Service Manual ▷ View online
11
KX-NTV150 Series
7.3.
No Audio
7.4.
Wrong date
7.5.
Fail connecting to cable LAN
1. Check if Main Board PCB'A _U26, U14 is damage.
*U26-(IC,FM1288-GE410,FORTEMEDIA)
*U14-(IC,TPA2011D1YFF,TI)
*U14-(IC,TPA2011D1YFF,TI)
Malfunction
Main Board exchange at first.
If trouble is not closed yet, Front cover Assy need to exchange too.
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-
(GCAP, 0.2F, 3.3V, -20~+80%, ELNA KL series)
Note:
BT2 pin: 260°C±5°C
soldering time: 2Sec±0.5Sec
soldering time: 2Sec±0.5Sec
Malfunction
Main Board exchange.
1. Check if Main Board PCB’A _U1, U6 is damaged.
*U1-(SOC, VVTK8112, VATICS)
*U6-(IC, KSZ8051MNL, MICREL)
*U6-(IC, KSZ8051MNL, MICREL)
Malfunction
Main Board exchange.
U26
U14
D19
BT2
U6
U1
12
KX-NTV150 Series
7.6.
Fail upgrading firmware
1. Check if Main Board PCB’A _U1 is damage.
*U1-(SOC, VVTK8112, VATICS)
Malfunction
Main Board exchange.
U1
13
KX-NTV150 Series
8 Disassembly and Assembly Instructions
8.1.
Disassembly procedure
Step1
A. Remove 2 screws of back cover.
Step2
A. Open front cover from back cover.
B. Remove connector of MIC and speaker (circle in the picture).
B. Remove connector of MIC and speaker (circle in the picture).
Step3
A. Remove 4 screw of main board (red circle).
B. Remove 3 screws of sensor board (green circle).
C. Remove connector of antenna (yellow circle).
B. Remove 3 screws of sensor board (green circle).
C. Remove connector of antenna (yellow circle).
Step4
A. Take out sensor board and main board.
14
KX-NTV150 Series
8.2.
Measure the circuit after disassembly
Before connecting to power source, measuring if VCC( VDD) to GND is short with multimeter.
Power on the unit then measuring the main voltage DC5V and DC3.3V with multimeter.
Step1
A. Turn the multimeter to resistance setting (Ω)
(with beep function).
B. Measure main board PCBA (TP14_GND) with COM probe of
(with beep function).
B. Measure main board PCBA (TP14_GND) with COM probe of
multimeter.
C. Measure main board PCBA (TP20_5V9V) with Ω probe of
multimeter, the circuit is short if there's beep sound; if not, the
circuit is normal.
circuit is normal.
Step2
A. Turn the multimeter to resistance setting (Ω)
(with beep function).
B. Measure main board PCBA (TP14_GND) with COM probe of
(with beep function).
B. Measure main board PCBA (TP14_GND) with COM probe of
multimeter.
C. Measure main board PCBA (D24_Pin1) with Ω probe of
multimeter, the circuit is short if there's beep sound; if not, the
circuit is normal.
circuit is normal.
Step1
A. Turn the multimeter to DCV setting.
B. Measure main board PCBA (TP14_GND) with COM probe of
B. Measure main board PCBA (TP14_GND) with COM probe of
multimeter.
C. Measure main board PCBA (TP20_5V9V) with Ω probe ;
check if the value is DC5.225V ~ 5.775V.
D. If the voltage is abnormal, check if other component is damage.
Step2
A. Turn the multimeter to DCV setting.
B. Measure main board PCBA (TP14_GND) with COM probe of
B. Measure main board PCBA (TP14_GND) with COM probe of
multimeter.
C. Measure main board PCBA (TP7_3V3) with Ω probe ;
check if the value is DC3.13V ~ 3.46V.
D. If the voltage is abnormal, check if other component is damage.
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