Replacing a Front Group Service LED Cable Assembly

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Replacing a Front Group Service LED Cable

Assembly

This procedure replaces a front group service LED cable assembly in a NonStop S-series

server online. The front group service LED is part of this cable assembly, so if that LED

fails, you must replace this entire cable assembly. You do not need to shut down the

system before replacing a front group service LED cable assembly.

The following is a high-level summary of the tasks required to replace the assembly. Each

task in this outline is linked to step-by-step instructions about how to perform the task. After

you complete a task, click the check box.

1 Read the cautions.

2 Gather the proper tools.

3 Unpack and inspect the replacement cable assembly.

If the replacement cable assembly is damaged, you must order another

replacement cable assembly before continuing with this procedure.

4 Remove the disk drives from slots 04, 05, and 06 of the enclosure. Follow

Steps 1 through 3 of Replacing an Internal Mirrored Disk Drive CRU or

Replacing an Internal Nonmirrored Disk Drive CRU.

5 Remove the PMF CRU or IOMF CRU from slot 50 of the enclosure using the

appropriate OSM action or guided procedure. See Guided Procedures.

Follow the OSM action or guided procedure until you have removed the CRU.

Perform Steps 6 through 8 of this procedure and then reinstall the CRU and

resume the OSM action or guided procedure exactly where you left off.

6 Remove the front group service LED cable assembly.

7 Install the front group service LED cable assembly.

8 Reinstall the disk drives in slots 04, 05, and 06 of the enclosure. Follow Steps

4 through 7 of Replacing an Internal Mirrored Disk Drive CRU or Replacing an

Internal Nonmirrored Disk Drive CRU.

9 Reinstall the PMF CRU or IOMF CRU in slot 50 of the enclosure by resuming

the OSM action or guided procedure exactly where you left off.

Summary of content (11 pages)

PAGE 1
Replacing a Front Group Service LED Cable Assembly This procedure replaces a front group service LED cable assembly in a NonStop S-series server online. The front group service LED is part of this cable assembly, so if that LED fails, you must replace this entire cable assembly. You do not need to shut down the system before replacing a front group service LED cable assembly. The following is a high-level summary of the tasks required to replace the assembly.
PAGE 2
Cautions for Replacing a Front Group Service LED Cable Assembly Cautions: ● You must remove and install a PMF CRU or IOMF CRU when replacing the front group service LED cable assembly. OSM actions and guided procedures are the only supported methods for removing and installing these CRUs. For more information on OSM actions and guided procedures, see Guided Procedures. ● Whenever you handle a CRU, follow standard operating practices to avoid damage to the equipment.
PAGE 3
Standard Operating Practices Caution. Replace only one CRU or FRU at a time. Attempting to replace more than one hardware component at a time might cause serious system outages, processor halts, and connectivity problems. Whenever you replace a CRU or a FRU, use the following standard operating practices to minimize any potential damage to the equipment: ● Complete HP training courses on system support for NonStop S-series servers.
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Related Topic ESD Guidelines
PAGE 5
ESD Guidelines Figure: Working in an ESD-Protected Environment Observe the following electrostatic discharge (ESD) guidelines whenever servicing electronic components: ● Obtain an ESD protection kit and follow the directions that come with the kit. You can purchase an ESD kit from HP (T99247-A00) or from a local electronics store. Ensure that your ESD wriststrap has a built-in series resistor and that the kit includes an antistatic table mat.
PAGE 6
Figure: Working in an ESD-Protected Environment This figure illustrates how to use an ESD kit when servicing customer-replaceable units (CRUs) and field-replaceable units (FRUs).
PAGE 7
Gathering the Proper Tools to Replace a Front Group Service LED Cable Assembly You need some or all of the following tools to replace a front group service LED cable assembly: Tool Used to...
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Removing a Front Group Service LED Cable Assembly 1 Place an antistatic table mat on a flat horizontal work surface near this enclosure. Put on an ESD wriststrap and attach the grounding clip to any unpainted metal surface on the enclosure frame, such as the door latch. Refer to ESD Guidelines. 2 Open the service-side enclosure door, if any.
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Figure: Removing a Front Group Service LED Cable Assembly
PAGE 10
Installing a Front Group Service LED Cable Assembly 1 With the appearance-side enclosure door open, continue to observe ESD protection guidelines. Refer to ESD Guidelines. 2 Remove the external retainer from the LED on the cable assembly and, from outside the appearance side of the enclosure, insert the external retainer into the opening for the front group service LED. Refer to Figure: Installing a Front Group Service LED Cable Assembly for this and following steps.
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Figure: Installing a Front Group Service LED Cable Assembly