Advertisement
Diagnosis
1. Digital display check
Press the 'switch' button, the digital display '120', then press the digital keyboard
'0--9' one by one, the display should show the corresponding number.
2. Function key check
According to the panel, check each button function. If you cannot achieve panel function,
the key is failure.
3. Keyboard check
When you touch each tone key, the corresponding tone should be sent out.
4. Sound check
Press the 'Demo'button to play music, the sound should have no obvious noise, and the
left and right sound should be balance.
Frequently Asked Questions
The serial
number
LED -- Not lighting
1
Keyboard -- Not sounding
LED -- Not lighting
2
Keyboard -- Sounding
LED -- Lighting
3
Keyboard -- Not sounding
4
One or more keys in the
keyboard without sound
Problem
1. Check the power supply.
2. Check the DC jack, have it been connected
reliably? A poor contact would cause
unsuccessful power supply
Check the circuit of "LED display", whether
there is short circuit or short circuit.
1. Make sure the master volume knob is set
to an appropriate level.
2. Check whether any cable or headphone is
connected to the PHONES jack. When a set of
headphone is plugged into this jack, no
sound will output from the speaker.
1. There is some dust at the touch point of
the rubber to PCB carbon line.
2. Short circuit or open circuit of the PCB
line.
Possible Cause and Solution
8
Advertisement
