Dell Replacing Dell Storage MD1280 components, Safety precautions, General safety precautions

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Replacing Dell Storage MD1280 components

This section describes the tasks to replace field replaceable units (FRUs) inside the Dell Storage MD1280 enclosure. Here, it is assumed that the user has already received the appropriate replacement device and is ready to install the device in the enclosure.

Safety precautions

To avoid injury and damage to the enclosure, always follow these safety precautions.

WARNING: See the safety and regulatory information that shipped with your system. Warranty information may be included within this document or as a separate document.

Electrical safety precautions

To avoid injury and damage to the enclosure, always follow electrical safety precautions.

WARNING: Disconnect power from the enclosure when removing or installing components that are not hotswappable. When disconnecting power, first turn off the EMMs and enclosure. Remove the power cords from all the PSUs in the enclosure.

Know the locations of the following in your system environment: power switch of the equipment, emergency power button, switch to turn off power, and electrical outlet of the system.

Do not work alone when working with high-voltage components.

Do not use mats designed to decrease electrostatic discharge as protection from electrical shock. Instead, use rubber mats that are designed as electrical insulators.

The PSU cord must include a grounding prong and must be plugged into a grounded electrical outlet.

General safety precautions

To avoid injury and damage to an enclosure, always follow general safety precautions.

WARNING: Do not lift the enclosure without any assistance. If installed above the lower 20U of a rack, a customerprovided mechanical lift must be used to avoid injury.

Keep the area clean and free of clutter around the chassis.

While working on the enclosure, do not wear loose clothing, such as neckties and unbuttoned shirt sleeves, which can come into contact with electrical circuits or be pulled into a cooling fan.

Remove any jewelry or metal objects from your body because they are excellent electricity conductors that can create short circuits and harm you if they come into contact with printed circuit boards (PCBs) or areas where power is available.

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Contents Dell Storage MD1280 Service Guide Page Contents Technical specifications Contacting Dell Front-panel features and indicators About the Dell Storage MD1280 Service GuideDell Storage MD1280 overview Dell Storage MD1280 hardwareFront-panel features and indicators Back-panel features and indicators Back-panel features and indicators EMM features and indicatorsO EMM features and indicators Fan module features and indicatorsFan module features and indicators PSU features and indicatorsDdic indicator Ddic indicatorDdic indicator Electrical safety precautions Safety precautionsGeneral safety precautions Replacing Dell Storage MD1280 componentsReplacing PSUs Pre-replacement tasksRemoving a PSU Identifying the failed fan module Replacing fan modulesReplacing a fan module Numbering the hard drive Replacing hard drivesReplacing hard drives Identifying the failed hard driveOpening a Ddic Ddic Closing a drive drawer Replacing I/O EMM modulesReplacing an EMM Identifying the failed EMMReplacing rack rails Replacing chassisTurning on the EMMs and enclosure Post-replacement tasksTroubleshooting fan modules Troubleshooting Dell Storage MD1280 componentsTroubleshooting PSUs Troubleshooting DDICsTroubleshooting I/O EMMs Technical specifications PSU Physical Depth front mounting bracket to rear surface Page Page Contacting Dell