49
3. 24V LED Not Illuminated
Check for 12VDC between the black and red (bottom
two) wires and 24VDC between blue and white (top
two). IF voltage is correct, replace MPP (
HLX-PCB-
MAIN
). IF low/no voltage, go to 3B.
Test between the black and white wires for 120VAC. IF
no/low, continue to step 3C. IF voltage is correct, then
the power supply will need to be replaced
(
HLX-PSUPPLY
).
Test PSU output
Test PSU input
The power supply (located in the lower right portion of the cabinet) converts 120VAC
to 12VDC and 24VDC. The 12vDC circuit drives communication and the 24VDC circuit
drives relay activation.
Step 3A
Step 3B
