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KX-DT543/KX-DT543-B/KX-DT546/KX-DT546-B
8.4.
DXDP Does Not Work
Check the soldering.
Resolder or replace parts as needed.
Related parts: Q330,R345,R346,R347,C331,
C332,L303,L304,JK301,Q303,
Q304,R319,R320,C325,R321,
R322
NO
Connect DPT to DXDP port.
Related parts:
Related parts:
NO
YES
Confirm the waveform of transmitting signals
to DPT connected to DXDP port.
Refer to the waveform (17).
END
Confirm the voltage at Pin 4 of Q332 (VDD33).
Is it about 3.3V?
NO
Related parts: L221
Confirm the voltage between TP:H-D and TP:L-D.
Is it between 15V and 40V?
Confirm the waveform of receiving signals
from DPT connected to DXDP port.
Refer to the waveform (16).
C337,C333,R348,R349,D533,
R350-355,C335,C336
Q331,R340-343,D532,C330,
C331,Q332,R312,R313,C312,
C313,D533,R348,R349,C333,
C337
NO
YES
YES