P-4
TROUBLE SHOOTING
Symptom
Remedy
No Sound
Make sure volume is not on 0 position.
Check if there are sound sources (US
B/
Micro SD/TF Slot
/AUX IN) p
lug
into player panel.
Check if there are music files in the USB drive or Micro SD/TF Slot card
Check if the music files are not damaged. Damaged music files may
have noise or even cannot be played
Sound turns bad, or volume
decreases, or playing
discontinuity
It means power is getting low. Please recharge battery as soon as
possible.
Cannot Charge
Make sure to use correct adaptor and suggest not to play while
charging.
Cannot Play USB Drive
Old version USB drive is working in 5V (usually below 1GB), but the
player only supports new version USB drive (working in 3.7V-4.2V).
Summary of Contents for MS-4780USD2
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