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10
UP 300 Service Manual
Failure
Cause
Solution
Remark
⚫
No sound under
any operation
⚫
Low volume under
any operation
➢
Buzzer / display
damaged
Turn off the power, remove the display,
and replace the buzzer components on
the display
➢
Mainboard
damaged
Turn off the power and replace the
mainboard
Failure 05:
Buzzer has no sound / low volume