9
CHAPTER 4: TROUBLESHOOTING
4.2 Troubleshooting – Keypads Not Responding
Symptom
：
The keypads are not responding when pressed.
Reason
：
1. The keypads are defective.
2. The console is defective.
Solution
：
1. Press the SPEED UP and INCLINE DOWN keys together for 3 seconds to enter Engineering Mode.
a. Use the LEVEL UP or DOWN key to scroll to ENG0, and press ENTER.
b. Test each of the keypads using Display Test. The console should chime as each key is pressed.
2. If any keypads are not chiming during Step 1, check the connection of the keypad ribbon cable at the UCB.
a. Even if the connection appears good, detach the ribbon cable from the UCB, and then re-attach and
retest.
b. Replace the keypads as needed.
3. If the keypads do not resolve the issue, replace the console.
