K8030 - the jumpers connection under the IC

I would like to know why is there jumpers connection under the IC? What is the function of it? Please help me thanks

J1,2,3 are just PCB routing jumpwire. These jumpers haven’t any selection function.

I would like to know which is the right value of the resistor R11? Is it 10k or 4K7? I realized that while i was constructing the circuit. Pls reply, Thanks.

R11 = 4K7. The value in the latest version of a partlist is always the correct one.

im still not understand the SK5 terminal, can you explain?

If you connect a pushbutton between GND and P-E (Play edge), message will play once, If you connect the pushbutton between GND and P-L (Play level) the message will stop when the button is released.

Is it possible that the duration of recording can be make longer? How to make it?

This is not possible

i want to know the pin connection of the adapter socket terminal…i dont know which one is ground,positive and negative pin. thanks

Center positive