Regester keeps beeling and will not work

If your Sam4 ER-390M cash register is displaying a "Warning Power Fail" message, it means that the register has detected a power outage or an interruption in the power supply. Here are some steps you can take to fix this issue:

1. Check the power supply: Ensure that the cash register is properly plugged into a working power outlet. If the power supply is shared with other devices, make sure that they are not causing any power surges or fluctuations.
2. Check the battery backup: The Sam4 ER-390M cash register comes with a built-in battery backup that can keep the machine running in case of a power outage. Check the battery backup to see if it is functioning correctly. If the battery backup is not working, it may need to be replaced.
3. Reset the cash register: Turn off the cash register, unplug it from the power source, and wait for a few minutes. Then, plug it back in and turn it on. This will reset the cash register and may resolve the issue.
4. Contact customer support: If none of the above steps work, you should contact Sam4 customer support for assistance. They can provide further guidance on how to resolve the issue.

It's worth noting that if you experience frequent power outages or power supply fluctuations, it can cause problems with the cash register's electronic components. In such cases, you may need to consider using a voltage stabilizer or a UPS (Uninterruptible Power Supply) to protect your cash register and other electronic equipment.

Hope this might work for you; please COMMENT

https://www.u-manual.com/download-manual-now-for-free-10/261398/cash-register-sigma-cr-2000.html#.VUZCUPCxgVE

I would try to input an amount to see if it clears, if you still have manual that came with it there is a number that you can call for help

slide the key slot to P then press 0 & C at once then power it up while still pressing

You'll need the keys to switch it to Reg mode, IME.

e32 on sharp cash regester

These don't beep for no reason. There must be something wrong, maybe your fly is open. I would find out the location of the beeper. It will have two wires, cut one and your beeping will stop.

I suggest you to reset your equipment.Here is how:
Remove AA batteries and unplug register from wall for 15 minutes.

Two more options;
Option #1:
To print the transaction details before clearing the journal memory:

VERY IMPORTANT: Do not interrupt once printing begins or the journal will not be cleared.

1. Make sure the paper is full in the register.
2. Turn to Z mode.
3. Hit the RC key until the screen displays "E94".
4. Hit Cash Amount Tender.

Once the printing is completed, the journal is cleared and the register is ready for use.

Option #2:
To clear the journal memory WITHOUT printing the transaction details:

1. Turn to Z mode
2. Hit RC key until the screen displays "E94 Clear"
3. Hit Cash Amount Tender

yeah that's it, there is a paper jam. unjam it. hope this helped