KX-TCD961GB - Panasonic Telephone Service Manual (repair manual). Page 55

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KX-TCD961GB
NO VOICE TRANSMISSION.
No
No
Check jumpers JMP1, JMP9,
L3, D8 and the surrounding 
area in the base unit.
Check T8 and the surrounding 
area of the base unit.
Do signal waveforms appear at 
TP50 of the base unit?
Check IC101 and the 
surrounding area.
Check the soldering of
IC101, RFM1 and
the surrounding area.
Check T13 and the surrounding 
area of the base unit.
Do signal waveforms appear at 
the T13 emitter of the base unit?
(Judged to be some kind 
 of problem in the base unit.)
Does data appear at IC101 
pin 20?  (Rx-DATA)
Do waveforms appear at IC101 
pin 63 of the base unit? (RxAF)
Check IC2 pin 60, 61, 63, 64
and the surrounding area.
Supply 5 mV signals to the microphone 
of the handset, and set to the 
communication mode.
Check the microphone and 
surrounding area on the
handset.
(Judged to be some kind of
 problem in the handset.)
Yes
Yes
Yes
Yes
No
No
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