Read Panasonic KX-DT543RU / KX-DT546RU Service Manual Supplement online
15
2.5.
Audio Problem
2.6.
Handset Does Not Work
2.6.1.
Receive
Related parts: R427,C418,C419,C421,C455,
C420,C453,L220
NO
Confirm the voltage at Pin 31 and Pin 39 of
IC410 (VCCA33).
Is it about 3.3V?
YES
Check the soldering.
Resolder or replace parts as needed.
Resolder or replace parts as needed.
Headset problem ?
SP phone or Ringer problem ?
YES
YES
YES
NO
NO
NO
See 9.6.1
See 9.6.2
See 9.6.3
Handset problem ?
END
Check the soldering.
Resolder or replace parts as needed.
Resolder or replace parts as needed.
Related parts: IC410,C519,C520,L465,C525
NO
Confirm the waveform of dial tone at TP:HSSPOUT
while you leave a phone off the hook.
Can you see the waveform of dial tone?
while you leave a phone off the hook.
Can you see the waveform of dial tone?
YES
Related parts: JK501, Handset,Curl cord
NO
YES
Can you hear dial tone from handset speaker?
END
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