DOWNLOAD Panasonic KX-NS5170XSX / KX-NS5170X-SX Service Manual ↓ Size: 3 MB | Pages: 53 in PDF or view online for FREE

Model
KX-NS5170XSX KX-NS5170X-SX
Pages
53
Size
3 MB
Type
PDF
Document
Service Manual
Brand
Device
PBX / 4-PORT DIGITAL HYBRID EXTENSION CARD
File
kx-ns5170xsx-kx-ns5170x-sx.pdf
Date
PREV: Panasonic KX-NS5170X / KX-NS5170SX Service Manual / Supplement

Panasonic KX-NS5170XSX / KX-NS5170X-SX Service Manual ▷ View online

21
KX-NS5170X/KX-NS5170SX
YES
Is the dial tone 
heard?
APT does not work properly.
Confirm the APT
NO
YES
Are
the LED and LCD 
normal?
Go to the flowchart of 
"SLT can not make a call."
NO
YES
NO
Is the 
voltage between D1 
and D2:15V or 15V 
ON/OFF
YES
NO
Is the voltage 
15V
YES
NO
Check T100 
and U105.
YES
NO
Is VREF+ about 2V?
Is VREF- about 1.25V?
Replace IC401.
APT is defective.
Replace the defective parts.
Replace Q400,IC401.
YES
NO
Does PT_CUR
switch ON/OFF?
YES
NO
Does PT_POW
switch ON/OFF?
Replace IC401.
Replace IC401.
Check D100,Q100,Q101,U103,
U101,U100,R115 
and peripheral 
parts.
Then replace the defective parts.
22
KX-NS5170X/KX-NS5170SX
The bell of SLT does not ring.
END
OK
NG
Check the test land 
between TP1-2 and GND.
Refer to "5.2.3. Power Supply Circuit"
Check the external DC/DC converter components for VBAT.
Refer to "5.2.13. Power Supply Circuit "
Replace the 
defective parts.
NG
OK
OK
Check D201A-B.
OK
Check soldering of terminal of IC200A.
OK
Replace the IC200A.
NG
NG
Replace the defective parts.
Resolder the defective parts.
Confirm bell signal(AC 70 to 80V)
between IC200A_1pin and 59pin, 
IC300A-W_46pin and 48pin. 
NG
Check soldering of 
terminal of IC200A
NG
Check R206,208,207,209,200,201,
D202,203,C207,208,201,202,200.
NG
Replace the defective 
parts.
OK
Replace the IC200A.
OK
Resolder the defective parts.
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.
OK
Replace the IC200A.
NG
NG
Replace the 
defective parts.
Resolder the 
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.
NG
OK
Check R206, 208, 207, 209, 200, 201,
D202,203, C207,208, 201, 202, 200.
NG
Replace the 
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.
Resolder the 
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. 
24
KX-NS5170X/KX-NS5170SX
Go to the flowchart 
"SLT cannot make a call".
SLT cannot output DTMF.
END
NG
Is the dialton
heard when the handset is 
OFF-HOOK ?
Confirm DTMF 
signal between IC200A_1pin 
and 59pin or IC200A_46pin
and 48pinduring sending 
DTMF.
NG
Check soldering of terminal 
of IC200A.
NG
Resolder the 
defective parts.
OK
OK
Replace the IC200A.
OK
Oscillation sound (noise)
is heard while calling.
END
NG
Check soldering of terminal 
of IC200A.
OK
Resolder the defective parts.
Replace the IC200A.
OK
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