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ER-390M Program Mode Programming • 111
Program 80 - Function Key Descriptor
Program descriptors by entering three digit alpha character codes.
1. Turn the control lock to the P position.
2. To begin the program, enter 8 0, press the SBTL key.
0 SBTL8
3.
Enter up to 18
characters from
Alpha Overlay
FUNCTION
KEY
4. To program additional function keys, repeat from step 3, or press the CASH
key to finalize the program.
CASH