DOWNLOAD Panasonic KX-HT82480 / KX-HT82470 / KX-HT82460 Service Manual ↓ Size: 4.69 MB | Pages: 71 in PDF or view online for FREE

Model
KX-HT82480 KX-HT82470 KX-HT82460
Pages
71
Size
4.69 MB
Type
PDF
Document
Service Manual
Brand
Device
PBX / OPTION CARDS
File
kx-ht82480-kx-ht82470-kx-ht82460.pdf
Date
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Panasonic KX-HT82480 / KX-HT82470 / KX-HT82460 Service Manual ▷ View online

29
KX-HT82480/82470/82460 Series
NO
NO
OK
NG
NG
END
END
END
NO
NG
NG
Cannot be called.
When the calling path 
is continuing, is the voltage of 
EXT. line between T-R
 less than or equal to 24V?
Can DTMF send out?
Check the 
operation amplifier
of IC908A-D.
Replace the
 NG parts of IC908A-D.
Check DSP 
IC913A/C.
Replace the
 DSP IC913A/C.
The dial tone can be 
heard from the station.
Check the 
operation amplifier
of IC908A-D.
Replace the
 NG parts of IC908A-D.
Check DSP 
IC913A/C.
Replace the DSP 
IC913A/C.
30
KX-HT82480/82470/82460 Series
NG
all ports
OK
OK
Caller ID is not detected
by optional equipment
END
Dose this occur in a specific 
ports or all ports 
specific ports
Another Case.
Check soldering of terminal of 
IC913A/C and the peripheral parts. 
Resolder DSP IC913A/C.
Check the test 
land between [TP_13.824MHz] 
and [DG] 13.824MHz?
NG
Check  X900,R928,IC901,R931.
NG
Replace the 
defective parts.
OK
Replace the DSP IC913A/C.
31
KX-HT82480/82470/82460 Series
7.2.
SLC8
The card doesn't work.
Check for short of the
power supply.
(The power supply should be OFF.)
OK
OK
NG
NG
Check the test
land between [+3.3V]
and [GND].
OK
Resolder the defective parts.
Check the 
soldering of terminal of 
IC700A/C/E/G.
NG
Resolder the defective parts.
Check the 
soldering of terminal of
IC201.
NG
Check the 
test land between 
TP CL702A-H and GND.
Refer to technical description.
Power Supply Voltage 
Generator - VBAT 
converter"
Replace the 
defective parts.
NG
OK
END
OK
Check the external DC/DC converter components
for VBAT.
Refer to technical description Power Supply Voltage 
Generator - VBAT converter .
32
KX-HT82480/82470/82460 Series
The bell of SLT does not ring.
END
OK
NG
Check the test land 
between TP CL702A-H and GND.
Refer to technical description
   Power Supply Voltage Generator  
- VBAT converter.
Check the external DC/DC converter components for VBAT.
Refer to technical description Power Supply Voltage 
Generator  - VBAT converter .
Replace the 
defective parts.
NG
OK
OK
Check soldering of terminal of IC700A/C/E/G.
OK
Replace the IC700A/C/E/G.
NG
Resolder the defective parts.
Confirm bell signal(AC 70 to 80V)
between IC700A/C/E/G  38-40pin
IC700A/C/E/G 27-29pin. 
NG
Check soldering of 
terminal of IC700A/C/E/G.
NG
Check R700/701/702/703,
D700/701/705/706, C700/701/702.
NG
Replace the defective 
parts.
OK
Replace the IC700A/C/E/G.
OK
Resolder the defective parts.
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