T
ROUBLESHOOTING
Heated Shelf Merchandiser
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Service Manual
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MN-39054
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Rev 1
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4/17
39
All Lights, or one Bank of Lights, will not
Illuminate
Measure the voltage across the brown and blue wires
of the power supply.
Does the measured voltage correspond to the voltage
printed on the serial number tag?
No
Repair or replace the wiring
Yes
Measure the voltage across the red and black wires of
the power supply
Is the measured voltage 12 VDC?
No
Replace the power supply
Yes
Measure the voltage from the load side of the fuses to
the black wire of the power supply
Is the measured voltage 12 VDC?
No
Replace the fuse
Yes
Repair or replace the wiring from
the terminal blocks to the lights