ER-A410, ER-A420 (serv.man10). ERA410 420 FAQ's (updated Dec 2006) - Sharp ECR FAQ (repair manual). Page 17

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16
What are the 2 RS-232
ports for on the
ERA410/420.
The ports are required for:-
Slip Printer.
PC connection for third party
software.
or
ER02FD Utility for basic back
up/Restore.
Or
POSUtility software from Sharp
Options Queries
Options Queries
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