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sharp ER1970?

how do i reset as my till seems to have froze,

how do i preset prices??
mr james, April 2008
Hi. You will need a service key. This key will turn anticlockwise to the point where it is pointing straight down (two extra clicks past the last mode). This is the reset for this model. If you don't have one, you will need to file one down.

Mark, May 2008
link Click here to see other fixes for Sharp.