NPM-5
UI Module Troubleshooting PAMS Technical Documentation
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External Mic
Malfunction
(Stereo Headset)
Check B2B connector. Ensure
the connectivity of XMICP,
XMICN (Pin26 and pin 25 of
J301) to the UI module
Replace and test
with a good stereo
headset with mic
Is the new
stereo headset
working?
Replace the stere
headset
NO
YES
Check FL603 an
contact of system
connector (J603
to the UI module
Mono Headset
Malfunction
Replace a good
mono headset and
test it
Is the new
mono headset
working?
Replace the mono
headset
NO
YES
Check FL602 and
FL603 soldering
Check B2B connector. Ensure the
connectivity of XEARP, XEARN
(Pin29 and pin 28 of J301) and
XMICP, XMICN (pin 26 and pin 25
of J301) to the UI module
Is HDC5_INT
voltage correct when
headset is plugged
in?
Check R609, R615
and R610
Check system
connector’s
contact on UI
module
YES
NO