
X458 L3 Service Manual
29
Receiver low voice or no voice
NO
NO
NO
NO
YES
YES
YES
YES
NO
NO
Replace the
receiver.
Measure the signal
with oscillograph
under calling mode
Receiver is low.
Check if LS402
is damaged.
Resolder clean LS401
Check if the receiver
is broken or damaged
Test if there’s sound from
receiver with multimeter
Replace receiver
Replace CPU
U101 MT6260
Set the phone as
handsfree mode
END
All manuals and user guides at all-guides.com
Summary of Contents for X458
Page 13: ...X458 L3 Service Manual 13 All manuals and user guides at all guides com ...
Page 14: ...X458 L3 Service Manual 14 Output of SIM Card All manuals and user guides at all guides com ...
Page 17: ...X458 L3 Service Manual 17 Display interface All manuals and user guides at all guides com ...
Page 48: ...X458 L3 Service Manual 48 All manuals and user guides at all guides com ...