Read Panasonic KX-DT521RU Service Manual Supplement online
17
2.7.
Headset Does Not Work
2.7.1.
Receive
Check the soldering.
Resolder or replace parts as needed.
Resolder or replace parts as needed.
Related parts: IC410,C577,L462
NO
Confirm the waveform of dial tone at
TP:HESSPOUT when you press the speaker button
TP:HESSPOUT when you press the speaker button
.
Can you see the waveform of dial tone?
YES
Related parts:
[Ope PCB]
JK202
Headset
NO
YES
Can you hear dial tone from headset speaker?
END
Related parts:
[Main PCB] CN400,
[Ope PCB]
[Ope PCB]
CN205,C217,C218,L210,D247
Flat Cable (Between Main PCB and Ope PCB)
NO
Confirm the waveform of dial tone at Pin 5 of
JK202
when you press the speaker button.
Can you see the waveform of dial tone?
Can you see the waveform of dial tone?
YES
Insert a headset
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