Read Panasonic KX-NS5170XSX / KX-NS5170X-SX Service Manual online
23
KX-NS5170X/KX-NS5170SX
SLT cannot make a call.
END
OK
NG
Measure the
voltage between T
and R(V_TR) when handset
is ON-HOOK. Is it
about 30V ?
Check the external DC/DC converter components
for VBAT.
Refer to "5.2.3. Power Supply Circuit
"
NG
OK
OK
Check D201A-B.
OK
Check soldering of terminal
of IC200A.
of IC200A.
OK
Replace the IC200A.
NG
NG
Replace the
defective parts.
defective parts.
Resolder the
defective parts.
defective parts.
NG
Check soldering of terminal of IC200A.
NG
Check the test land between .
VBAT (a-x) and GND.
TP1-2 = 28 `32V at ON-HOOK mode.
VBAT (a-x) and GND.
TP1-2 = 28 `32V at ON-HOOK mode.
NG
OK
Check R206, 208, 207, 209, 200, 201,
D202,203, C207,208, 201, 202, 200.
D202,203, C207,208, 201, 202, 200.
NG
Replace the
defective parts.
defective parts.
OK
Check soldering of terminal of IC200A.
NG
OK
Replace the IC200A.
OK
Resolder the defective parts.
Replace the IC200A.
OK
Replace the
defective parts.
defective parts.
Resolder the
defective parts.
defective parts.
Measure the
voltage between T
and R(V_TR) when handset
is OFF-HOOK.
Is it about 8V-20 ?
However, V_TR is dependent
on impedance of the
connected SLT.
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