Sam4s ER-390 SERIES, Operation And Program Manual

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ER-390 Series Getting Started
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15
Memory Clear
CAUTION: The procedures described in this area are security sensitive.
Clearing all or parts of the ER-390 Series memory may cause damage or loss to the
program. Do not share this information with unauthorized users and distribute the
special SERVICE-Mode key only to those you may want to perform these functions.
Memory All Clear
Perform "Clear All Totals", or "Clear PLU File " if you wish to clear only parts of ER-390
Series memory. Complete clearing of all memory areas and installation of the default
program can be done through the following special procedure:
1. Turn the power switch located on the right side of the register to the OFF position.
2. Turn the control lock to the S position one position.
3. Press and hold the key position where the CHECK key is located on the default
keyboard layout.
4. Continue to hold the CHECK key while turning the power switch to the ON position.
5. Press the upper left key of the keyboard, then the lower left key, then the upper right key,
and finally press the lower right key.
6. When memory is cleared, the register prints a message “RAM ALL CLEAR OK!”