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19-4 SPARC Enterprise M8000/M9000 Servers Service Manual • June 2010
c. From here, perform operations according to the guidance displayed in the
maintenance menu.
Check the states of LEDs (POWER LED: off; CHECK LED: blinking) on the
DDC to be replaced, and begin the actual replacement work when a message
instructing the user to replace the target DDC is displayed. Leave the
maintenance menu as is until Step 7.
3. Connect the clip of the antistatic wrist strap and of the antistatic mat to the
server grounding port. See Section 1.4, “Antistatic Precautions” on page 1-6.
4. Ensure that the metallic underside of the wrist strap is in direct contact with
your skin. The wrist strap should be snug around the wrist so that it does not
rotate. See Section 1.4, “Antistatic Precautions” on page 1-6.
Caution – Before handling FRUs, be sure to connect the clip of the antistatic wrist
strap and of the antistatic mat to the server grounding port, and attach the band of
the wrist strap to one of your wrists. Place the FRUs on the grounded antistatic mat.
Failure to take these antistatic measures might result in serious damage.