No Power To The Console; Troubleshooting - Speed Does Not Display - Johnson Matrix Retail R30 Service Manual

3.4 TROUBLE SHOOTING
3.4.1 TROUBLESHOOTING – NO POWER TO THE CONSOLE
Symptom:
Console does not light up.
Possible Reason:
a. The power adaptor is not correct or is defective.
b. The console cable has a bad connection or is defective.
c. The console is defective.
Solution:
a. The adaptor for this model is 12V - 2A. Check to make sure the power adaptor on the unit is correct.
Test the power adaptor on a known good outlet. Replace the adaptor if it is defective.
b. Check the connection of the console cable at the console. Unplug the console cable from the console,
and use a multi-meter to check the voltage through the console cable. Normally it should be 12VDC. If
no voltage is present, the console cable is defective; replace it.
c. If the voltage through the console cable is 12VDC, the console is defective, replace it.
3.4.2 TROUBLESHOOTING – SPEED DOES NOT DISPLAY
Symptom:
The speed value does not display on the console.
Solution:
1. Unplug the power cord, remove the console and check that all connections to the console are secure and
not damaged or pinched.
CHAPTER 3: Troubleshooting
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