Read Panasonic KX-NS5173XSX / KX-NS5174XSX Service Manual online
14
KX-NS5173X/KX-NS5173SX/KX-NS5174X/KX-NS5174SX
8 Troubleshooting Guide
The card doesn't work.
Check for short of the
power supply.
(The power supply should be OFF.)
Check for short
circuit of F300 and F301.
SHORT
OPEN
Replace the defective parts.
OK
OK
NG
NG
Check the test
land between [+3.3V]
and [GND].
OK
Resolder the defective parts.
Check the
soldering of terminal of
IC200A-O.
NG
Resolder the defective parts.
Check the
soldering of terminal of
IC300.
NG
Check the
test land between
TP1-16 and GND.
Refer to "5.2.11.
Power Supply Voltage
Generator - VBAT
converter"
Replace the
defective parts.
defective parts.
NG
OK
END
OK
Replace the defective parts.
Check D201A-P.
NG
OK
Check the external DC/DC converter components
for VBAT.
Refer to "5.2.11. Power Supply Voltage Generator
- VBAT converter ".
for VBAT.
Refer to "5.2.11. Power Supply Voltage Generator
- VBAT converter ".
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