Impediment RS-0800-LVD, Руководство пользователя

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Troubleshooting
37
4.6 Continuous Operation During
Replacement
Depending on how the subsystem is set up, if a disk unit fails, it can normally be replaced without
interrupting the use of the system.
In addition, each enclosure can contain one or two Power Supply modules, any of which can maintain
power to the subsystem while one of the others is replaced. Similarly, dual Cooling modules will maintain
appropriate cooling while a failed unit is replaced.
4.7 Replacing a Module
Please refer to Chapter 2 , ”Getting Started” for information on the initial installation of the plug-in modules
in the RS-0800-LVD enclosure.
Warning Observe all conventional ESD precautions when handling RS-0800-LVD modules and
components. Avoid contact with Backplane components and module connectors, etc.
4.7.1 Power Supply Module
Warning The rear modules are retained by 2 off brackets (+ 4 fixing screws) and are not operator
removable. these modules must only be removed by trained maintenance technicians who are
aware of the hazards associated with the PSUs.
Power must not be applied to the PSU when it is out of the RS-0800-LVD enclosure.The PSU does
not have complete safety covers.
Do not remove covers from the PSU. Danger of electric shock inside. Return the PSU to your
supplier for repair.
4.7.1.1 Removing the Module
Warning Do not remove the faulty Power Supply module unless you have a replacement Power Supply
module or Power Supply module blank ready for insertion.
If you have two Power Supply modules installed, you can continue working while replacing the faulty
module.
1 If you have more than one Power Supply module installed, make sure you identify the faulty module
correctly.
2 Switch off the faulty Power Supply module and disconnect the power supply cord.
3 Loosen the screws securing the retaining bracket and slide the bracket upwards, until it is clear of the
side of the Power Supply module (see
Figure 4–2 ).
4 Slide the PSU out of the enclosure (see Figure 4–3 ).