Specifications

102 • Service Mode Programming ER-650/650R
♦ Turn the key to the SM position (one position clockwise from the PGM position)
to display the SERVICE MODE menu:
SERVICE MODE 
0. HW TEST
1. CLEAR ALL TOTALS
2. CLEAR GRAND TOTAL
3. CLEAR PLU FILE
4. EPROM INFO.
5. MEMORY ALLOCATION
6. KEY ASSIGNMENT
♦ Press PAGE DOWN to view the remainder of the SERVICE MODE menu:
SERVICE MODE 
7. IRC OPTIONS
8. RS232C PORT 1
9. RS232C PORT 2