Troubleshooting - No Power To The Console - Livestrong LS9.9T Service Manual

6.2 TrOUBLeSHOOTiNG - NO POWer TO THe CONSOLe

1) SYMPTOM:
a. The power switch is in the on position, but the console will not turn on.
2) SOLUTION:
a. Check to see if the power switch is lit. If it is not, try a different outlet.
- If the power switch still does not light up with a known good outlet, replace the power switch.
b. Check to see if the MCB has power. There is a power LED on the MCB that should be lit (Figure A).
c. If the MCB does not have power, check the connection of the power wiring from the power receptacle to the MCB.
- If that does not resolve the issue, replace the MCB.
d. If the MCB does have power, check the connection of the console cable wire at the UCB.
- Disconnect the console cable wire at the UCB and use a multi-meter to check the DC volts (Figure B). The red lead should go onto the VDD
port on the cable and the black lead should go to the GND port (Figure C).
- The voltage should be over 15VDC. If the voltage is below 15VDC, replace the MCB.
- If the voltage is 15VDC or above, replace the console cable and / or the UCB.
FiGUre a
CHaPTer 6: Troubleshooting
NO POWer TO THe CONSOLe
FiGUre C
FiGUre B
17