-   1: unable to get the calculator HR150TER to change any of the tax rates beyond that session.
2: I was given the machine but no manual
3: When I change to print or memory mode the screen swows an E in left hand corner (presume error) I can not remove this and the machine locks up
Help please-   pipeman64
1. press and hold your % Key the zero on your display will disappear While the % is pressed, press and hold your CA key. After a short delay the calculator will print a line #--------------- when this happens release the keys.
2. Enter your tax rate for me this was 7.75 then press your Tax+ key. now your rate is set.
How do I re-program This machine?
The machine was used for a retail clothing store.  Now...
(More)
How do I re-program This machine?
The machine was used for a retail clothing store. Now it is in a liquor store with specialty items; Cheeses, fruits, etc.
We erased all the info from its passed life but we don't know how to reprogram it when some items are tax able and others are not.
;