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8.3 LCB LED INDICATORS
CHAPTER 8: TROUBLESHOOTING
LED CHECKPOINT
POSSIBLE ISSUE
SOLUTION
LEDs 2, 3, 4, 6, & 7 should be ON. If they are OFF, the LCB is damaged.
Replace the LCB.
If LED 1 is OFF.
No AC power cord plugged in.
Normal for a self powered unit. If this LED is not lit
when the unit is plugged in, replace the power cord
or power components.
If LED 5 is OFF.
Generator has no RPM output.
Normal for a powered unit. if the unit is self powered
and the LED is still OFF, replace the generator.
If LED 8 is OFF.
Bad communication between the UCB and LCB. Check the connection of the console cable, replace
if needed.
If LED 9 is OFF.
LCB is not providing 12V to the UCB.
Replace the LCB.
SOLUTION IF LEDS ARE NORMAL:
1) If the LEDs are lit normally, replace the UCB and console cable.
2) if the issue is still present after the UCB and console cable are replaced, replace the LCB.
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Страница 28: ...25 CHAPTER 8 TROUBLESHOOTING 8 1 ELECTRICAL DIAGRAMS CONTINUED P21 DIGITAL COMMUNICATION WIRE ...
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