Power subsystem
Power-on checks
Turn on the power. If the control-panel LEDs do not illuminate, perform the power-on checks to find the
cause of the problem.
1. Verify that the product is plugged into an active electrical outlet that delivers the correct voltage.
2. Verify that the power button is in the on position.
3. Make sure that the product makes the expected start up sounds.
NOTE: The overcurrent/overvoltage protection circuit in the low-voltage power supply unit might
be functioning. Turn the product off, unplug the power cord, and turn the product on. If the
product does not function, the fuse melts, or the power supply is malfunctioning, replace the
engine controller unit. See
Engine controller assembly on page 46.
ENWW
Troubleshooting process
57
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