About XE-A102 Cash Register: Problem E02 - Sharp XE-A102 Cash Register

SOURCE: we just got a new xe-a102, we do not need to print

To disable receipt printing:

• Press the Rcpt/PO key in the OP X/Z position. This key toggles the receipt printing status ON andOFF.
• To check the receipt printing status, turn the mode switch to the OP X/Z position or press the CL key in the REG mode.
  
• When the function is in the OFF mode, the receipt off indicator “_” illuminates.

To issue a receipt when receipt ON/OFF function is set to OFF:
If your customer wants a receipt after you finalized a transaction with the receipt ON/OFF function in the OFF
mode, press the RCPT/PO key. This will produce a receipt. If more than 50 items were entered, the receipt will be
issued in a summary receipt format. Your register can also print a copy receipt when the receipt ON/OFF
function is in the “ON” status.

SOURCE: Sharp XE-A203 Cash register Error message 3.2

You have logged yourself out of the machine. Press CL then 1 then CLK# or CASH#

SOURCE: Sharp XE-A41S Cash Register

I lost the key to the register xe-a41s I need to replace the key , my question is how I get the key