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What would cause a Quantum 140CPS11100 power supply to not power up?

The Quantum 140CPS11100 power supply that has a PV 01 or higher now require a jumper on pins 3 and 4 on the terminal strip for 115 VAC operations. If this jumper is not installed, it will be set for 220 VAC operations. Any power supply with a PV less than 1 did not require the jumpers.

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