Display Power Issues - Matrix R3XE-01 Service Manual

8.4 TROUBLESHOOTING - DISPLAY ISSUES
NO DISPLAY ON THE CONSOLE OR THE DISPLAY IS DIM WHEN RUNNING
LED 1
LED 5
SYMPTOM:
The console will not power up or the display is dim.
CHECK POINT
LEDs 2, 3, 4, 6, and 7 should be ON.
If LED1 is OFF.
If LED 5 is OFF.
If LED 8 is OFF.
If LED 9 is OFF.
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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CHAPTER 8: TROUBLESHOOTING
POSSIBLE ISSUE
If they are OFF, the LCB is damaged.
No AC power cord plugged in.
Generator has no RPM output.
Bad communication between UCB and LCB.
LCB is not providing 12V power to the UCB.
LED 9
LED 8
SOLUTION
Replace the LCB.
Normal for an unpowered unit.
Normal for a powered unit. If unpowered and
issue is still present, replace the generator.
Reconnect the console cable at the LCB and
UCB and check for kinks.
Replace the LCB.