Read Panasonic KX-DT521RU Service Manual Supplement online
19
2.8.2.
Send
Check the soldering.
Resolder or replace parts as needed.
Resolder or replace parts as needed.
Related parts: [Main PCB] R535,R533,R532,
C540,C541,R530,R531,C530,
IC410
IC410
[mini PCB for microphone]
R1,R2, MIC1
NO
END
Related parts: C540,R532,R565,R534,C569
NO
YES
Confirm the voltage between TP:MIP and
TP:DG_A.
Is it about 1.9V?
TP:DG_A.
Is it about 1.9V?
Related parts: IC410,C442,R238,C443
NO
YES
Confirm the voltage between either end of
C443 (MICBIAS).
Is it about 2.5V?
YES
Confirm the waveform of sending sound from
Speaker-phone microphone between TP:MIP and
TP:MIN during a call.
Can you see the waveform of sending sound?
Speaker-phone microphone between TP:MIP and
TP:MIN during a call.
Can you see the waveform of sending sound?
Click on the first or last page to see other KX-DT521RU service manuals if exist.