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X .Detaching the front panel
XI. Trouble and solution
Fault
Reasons
Solutions
LCD doesn’t display
1.Yellow wire is not connected
with battery+
2.Fuse of red wire is open
3.The panel connector is dirty
1 .Assure yellow wire is
connected with battery+
2. Replace fuse
3. Clean the panel
connector with absolute
alcohol
No sound
1.No power supply
2.Speaker wire is open circuit
3.SD/MMC card, U disk don’t
have song with corresponding
format.
4.SD/MMC card, U disk golden
finger is dirt which causes bad
contact.
1. Connect the power wire
2. Connect speaker wire.
3. Check the contents of
SD/MMC card, U disk.
4. Clean with absolute
alcohol
Low sound
(not clear)
1.Power internal resistance is
high
2.Antenna is bad contact.
Replace the power supply
Tighten the antenna plug.
Mono track
1.One channel of speaker wire is
open circuit
2.Amplifier integrated circuit is
damaged.
Connect speaker wire
Replace the IC of
amplifier
System down
Power supplier not stable
Long press the reset
button
Note: Technical data is subject to change without prior notice.
13


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