Specifications

108 • P-Mode Programming ER 390M Electronic Cash Register v1.2
Programming Group Descriptors
1. Turn the control lock to the P position.
2. To begin the program, enter 9 1 0, press the SBTL key.
3. Enter the number (1-20) of the group you wish to program; press the X/TIME key.
4. Enter up to 12 three-character codes and press the SBTL key. (See “Descriptor Code
Chart” on page 74.)
Or, insert the Alpha Keyboard Overlay (see “Alpha Program Overlay” on page 74), type
up to 12 characters and press the SBTL key.
5. To program additional groups, repeat from step 3, or press the CASH key to finalize the
program.
9 1 0 SBTL
X/TIME
CASH
SBTL
Type up to 12
characters
SBTL
Enter up to 12 three-
character codes