Try this
turn key to PGM mode
type the desired limit e.g 100000
press the department to set the limit to
press CASH
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If anyone needs / looking for a samsung / Sam4s ER-350 user / programming manual, try here:
http://the-checkout-tech.com/manuals/cashregisters/Samsung_ER-350_operating_programming_manual.html
Registerman, September 2010