changing prices on the ERa570?

You will need to know the PLU layout and have the programming keysheet handy.

Turn key to PGM2
Place the programming keysheet on the keyboard
1210
.
X (a/FOR on USA model)
PLU number
X
New price (without decimal point)
ST
TL

If you need to make a keysheet or understand PLUs and layout, the manual is here:

http://the-checkout-tech.com/manuals/cashregisters/Sharp_ER-A570_instruction_manual.html

Registerman
May 2011