Matrix E5x-02, Service Manual

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no diSplay on tHE conSolE or tHE diSplay iS diM wHEn rUnning
lEd 1
lEd 5
lEd 9
lEd 8
SyMptoM:
The console will not power up or the display is dim.
cHEck point poSSiblE iSSUE SolUtion
LEDs 2, 3, 4, 6, and 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 an unpowered unit.
If LED 5 is OFF. Generator has no RPM output. Normal for a powered unit. If unpowered and
issue is still present, replace the generator.
If LED 8 is OFF. Bad communication between UCB and LCB. Reconnect the console cable at the LCB and
UCB and check for kinks.
If LED 9 is OFF. LCB is not providing 12V power 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.
7.4 troUblESHooting - diSplay iSSUES
cHaptEr 7: troUblESHooting