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5. Trouble shooting
LCD
doesn't
display
No sound
Low sound (not
clear)
Mono track
Note: Technical data is subject to change without prior notify.
1.
Yellow wire is not connected
with battery +
2.
Fuse of red wire is open
1.
No power supply
2.
Speaker wire is open circuit
3.
SD/MMC card, U disk don't
have
corresponding format.
4.
SD/MMC card, U disk golden
finger is dirt which causes
bad contact.
1.
Power internal resistance is
high.
2.
Antenna is bad contact.
1.
One channel of speaker wire
is open circuit
2.
Amplifier integrated circuit is
damaged.
song
with
Assure yellow wire is
connected with battery +
Replace fuse
Connect the power wire.
Connect speaker wire.
Check the contents of
SD/MMC card, U disk.
Clean
with
absolute
alcohol.
Replace
the
supply
Tighten
the
antenna
plug.
Connect speaker wire
Replace
the
IC
amplifier
power
of
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