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Mend Office Appliances, Cash Registers

Removing E54 and E22 in tax register?

am working with Onda RCH cash register but its displaying E54 and also Err22 simultanoeusly. how do i correct it

Erick
November 2013
I'm not sure of E54, but E22 means the item has not been programmed.

Registerman
November 2013
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Mend Office Appliances, Cash Registers
Mend repair fix cash registers