Silicon Graphics Total Performance 9300, User Manual

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56 007-4644-001
4: Replacing Enclosure Components
Replacing a Failed Environmental Status Module
When TPSSM instructs you to replace a failed environmental status module, read
“Environmental Status Modules (ESMs)” on page 19, and then follow the steps in this
section.
Caution: Electrostatic discharge can damage sensitive components. Use a grounded
wrist strap or other antistatic precautions before handling enclosure components.
1. Check TPSSM for instructions on environmental status module failure recovery
procedures. Follow any instructions provided before you proceed.
2. Unpack the new environmental status module. Set the new module on a dry, level
surface near the enclosure. Save all packing materials in case you need to return the
module.
3. Review all documentation shipped with the new environmental status module for
updated replacement procedures and other information. If necessary, modify the
remaining steps to meet the system requirements. Kits often contain the most
current servicing information. If the kit instructions conflict with those in this
procedure, follow the kit instructions.
4. Locate the failed environmental status module (its fault indicator should be on).
5. Disconnect the Fibre Channel cables from the SFP transceivers in the failed module,
and then remove the SFP transceivers (see Figure 4-7). Label each cable to ensure
that all cables are properly reconnected to the new module.
Caution: Bending or damaging Fibre Channel cables can result in degraded
performance or data loss. Fibre Channel cables are fragile. Do not pinch the cables
with tie wraps, step on them, or bend at them at sharp angles.
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