Hello,

my Sharp ER-A220 seems to be crazy since a wrong or unusual sequence of pressed keys has been used

by mistake the cashier has used the "correction after a finalizing transaction" mode and then the machine seems to be blocked in this mode whatever is the mode selected with the manager key... the last tickets before it starts to be unusable was displaying the "Annul Mgr" text

then i would simply proceed to a master reset to retrieve the factory defaults and have a chance to have again a working ECR but didn't find yet any procedure for this model

i've also totally opened the machine, removed a ton of dust, in case of, and hopefully sucessfully re-assembled everything, but same symptoms... there is also two switches on the motherboard but no information about what means their position

anyone could help ?

regards
Robin

Hi,

I've looked through the manual and there is no mention of a full reset, maybe give these a try:

Try unplugging from the power, holding down the CL key whilst turning back on
If not try the above in the P or PGM position

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