A) Instruct the user on proper usage of the machine.
B) Massage the keypad and feel for depressed key(s).
- Massaging the keypad may release a stuck key if present.
- If the message is still present, perform a KEYPAD test from diagnostics.
- Access the maintenance mode by pressing and holding the 0, 2, and OK keys together.
- A beep will sound, MAINTENANCE SETTINGS will appear in the information window.
- Press SCROLL until KEYPAD TEST shows in the information window.
- If any keys do not respond during the keypad test, the keypad should be replaced.
- Press OK to exit the test.