User Guide

PAMS Technical Documentation UI Module Troubleshooting
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Internal speaker
malfunction
Replace a good
internal speaker
and test it
Is the new
speaker working?
Replace the
speaker
NO
YES
Check FL604 and
contact of internal
speaker (J604) to
the UI module
Check B2B connector. Ensure
the connectivity of EAR+, EAR-
(Pin32 and pin 31 of J301) to
the UI module