D-Link DSN-4200 Hardware Reference Guide for DSN-4000 - Page 31

A.2 Replacing a Power Supply Module The redundant power supplies on the DSN-4000 series are field-replaceable units. You can replace a power supply module without removing the enclosure from the rack. To remove the power supply module: 1. Verify that the power supply LED is amber or red. 2. Switch off the power to the power supply module you plan to replace. 3. Unplug the power cord. 4. Loosen and remove the retaining screw on the left side of the power supply module. 5. Pull the power supply module out of the DSN-4000 series enclosure. Retaining Screw for Power Supply #0 Retaining Screw for Power Supply #1 Status LED for Power Supply #0 Status LED for Power Supply #1 Figure A-1. Removing a Power Supply Module To install the replacement power supply: 1. Carefully slide the power supply module into the DSN-4000 series enclosure. 2. Install and tighten the retaining screw on the left side of the power supply. 3. Plug in the power cord. 4. Switch on the power supply. 5. Verify that the new power supply LED is green. DSN-4000 Series Hardware Reference Guide 23