Dc power loose

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If PS873 power supply provides more than 26.4VDC replace the power supply with PS914 power supply.
If PS873 power supply provides more than 26.4VDC replace the power supply with PS914 power supply.
If a power supply is not outputting DC power, 12 or 24VDC at the Power supply main board lower right terminals ( DC+ DC-), there are several potential causes. ·         Legacy Power Supplies (50...
(a) Receiving AC/DC power directly via physical wires from aseparate power supply; or (b) Communicating to an access control panel directly via physical wires/cables.
The following items may cause the  PS900 series power supply to have no DC output voltage. 1. If  the DC voltage selection jumper is missing, the power supply will not provide any D...