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Electrostatic Discharge Precautions. The procedures in this section require opening the
server and exposing the system to electrostatic discharge. Always observe all electrostatic
precautions when working with components inside or out of the server. Failure to follow these
precautions may result in component damage or loss of system reliability.
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Before You Do Anything...
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NOTE
Cabinet-mounted servers must be removed from the cabinet before proceeding.
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General SLC SIMM Troubleshooting.
NOTE
A-Class servers can only use Cache Memory SIMMs with part number A5182-60002. Using
Cache Memory SIMMs with any other part number may result in the server failing it's
selftest.
Step 1. Remove both SLC SIMMs and place on an ESD mat.
Step 2. Power up and observe LEDs
Step 3. If fault does not recur, the problem is with the SLC SIMMs. Either replace both SLC SIMMs,
or proceed to the "Single SLC SIMM Troubleshooting."subsection below.
Step 4. If the fault recurs, the problem is with the system board. To replace the system board, replace
the A-Class Exchange Base Unit (EBU). Refer to the "Replacing an A-Class Server
Exchange Base Unit (EBU)" section.
Single SLC SIMM Troubleshooting. To troubleshoot SLC faults to a single SIMM, a
known-good SLC SIMM is required.
Step 1. Install the known-good SLC SIMM in slot A and install one of the original SLC SIMMs in
slot B of the pair that failed. Power up and observe front panel LEDs.
Chapter 3
Use a grounding mat and an anti-static wrist strap.
Wear the anti-static wrist strap to ensure that any accumulated electrostatic charge is
discharged from your body to ground.
Power down the system.
Unplug the server.
Remove the top of the server by unscrewing the knurled captive screws on each side of
the rear of the server. Slide the top back, lift it off, and set it aside.
A-Class System Service
A-Class Server Trouble Shooting
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