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

33
KX-HT82480/82470/82460 Series
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 technical description Power Supply Voltage 
Generator  - VBAT converter.
NG
OK
OK
Check soldering of terminal 
of IC700A/C/E/G.
OK
Replace the IC700A/C/E/G.
NG
Resolder the 
defective parts.
NG
Check soldering of terminal of IC700A/C/E/G.
NG
Check the test land between .
TP CL702A-H and GND
= ** - ** V at ON-HOOK mode.
NG
OK
Check R700/701/702/703,
D700/701/705/706, C700/701/702.
NG
Replace the 
defective parts.
OK
Check soldering of terminal of IC700A/C/E/G.
NG
OK
Replace the IC700A/C/E/G.
OK
Resolder the defective parts.
Replace the IC700A/C/E/G.
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. 
34
KX-HT82480/82470/82460 Series
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 IC700A/C/E/G  38-40pin
IC700A/C/E/G 27-29pin
during sending DTMF.
NG
Check soldering of terminal 
of IC700A/C/E/G.
NG
Resolder the 
defective parts.
OK
OK
Replace the IC700A/C/E/G.
OK
Oscillation sound (noise)
is heard while calling.
END
NG
Check soldering of terminal 
of IC700A/C/E/G.
OK
Resolder the defective parts.
Replace the IC700A/C/E/G.
OK
35
KX-HT82480/82470/82460 Series
OK
Replace the IC201.
Caller ID is not detected
by optional equipment. 
Check soldering of terminal of IC201. 
Check soldering of 
terminal of IC700A/C/E/G.
all ports
Does this 
occur in a specific 
ports or all 
ports?
NG
Does The bell 
of SLT  ring ?
specific ports
NG
Resolder the defective parts.
Go to the flowchart 
"The bell of SLTdoes not ringl".
Resolder the defective parts. 
NG
OK
Replace the IC700A/C/E/G.
OK
END
OK
36
KX-HT82480/82470/82460 Series
7.3.
DPH2
7.3.1.
Cannot Call From Doorphone
OK
NG
cable & pin assign check.
Check corrector of Q101A/B.
Door phene connected:High
Connect the cable & pin-press 
correctly.
NG
Check Q101A/B, L101A/B, L102A/B, 
R234 ,R248,R249, IC201-pin83/84.
Check corrector of Q104A/B.
wait call button:Low
NG
Check Q140A/B,R159A/B, R160A/B, 
C140A/B, R234,R246,R247
(RDY[0]/[1])
(HOOK[0]/[1])
OK
Check corrector of Q104A/B.
Press call button:L
H
L
(HOOK[0]/[1])
Check corrector of Q104A/B.
Press call button:L
H
(HOOK[0]/[1])
NG
Check Q104A/B, R159A/B, R160A/B, 
C140A/B, R234,R246,R247
NG
check IC100, CN100, JK101 and around parts.
OK
OK
OK
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