Troubleshooting - auna multimedia MD-120 Instructions Manual

Fault Possible Reason
1. Yellow wire is not connected with bat-
LCD doesn't tery+.
work 2. Fuse of red wire is open.
3. The panel connector is dirty.
1. No power supply.
2. Speaker wire is open circuit
3. SD/MMC card, U disk don't have song
No sound
with corresponding format.
4. SD/MMC card, U disk golden finger is
dirt which causes bad contact.
Low (or distor- 1. Power internal resistance is high.
ted) sound 2. Antenna is bad contact.
1. One channel of speaker wire is open
circuit.
Mono
2. Amplifier integrated circuit is dama-
ged.
System down Power supplier not stable
20

Troubleshooting

Solutions
1. Assure yellow wire is connected with
battery +.
2. Replace fuse.
3. Clean the panel connector with abso-
lute alcohol.
1. Connect the power wire.
2. Connect speaker wire.
3. Check the contents of SD/MMC card,
U disk.
4. Clean with absolute alcohol.
1. Replace the power supply
2. Tighten the antenna plug.
1. Connect speaker wire
2. Replace the IC of amplifier.
Long press the reset button