Fujitsu SPARC ENTERPRISE M8000 Manual de usuario Pagina 211

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Chapter 7 I/O Unit (IOU) Replacement 7-17
5. Switch off all main line switches for the AC section (ACS) in the power supply
system.
For details, see Section 4.5.3, “Main Line Switch Locations” on page 4-28.
Note If the optional three-phase 200 VAC input power supply unit is installed, the
main line switches are located on the three-phase ACS.
Caution If the dual power feed option is installed, switch off the main line
switches for both power supply units.
Caution After stopping all the domains, be sure to switch off the main line
switches in the power supply system to completely shut off the supply of power.
6. Connect the wrist strap clip to a cabinet grounding port, and attach the band of
the wrist strap to one of your wrists.
7. Remove the IOU to be replaced. (See
FIGURE 7-7 - FIGURE 7-9)
a. Using a Phillips screwdriver, turn the knob screws securing the upper and
lower eject/lock levers 90 to 180 degrees to unlock the levers. (Turn the knob
screw while lightly pulling the lever by one hand.)
b. Unlock the eject/lock levers to pull the IOU off the backplane.
c. While grasping the handle at the front of the IOU, pull the IOU out partially
until the [NEAR TO END] label comes into view.
d. Raise the handle at the upper part of the IOU.
e. While grasping the front and upper handles of the IOU, pull it out slowly
from the slot.
Note To upgrade the IOU, remove the dummy (filler) unit before mounting the
IOU to be added. Since the same levers are used on the dummy (filler) unit, please
operate the eject/lock levers in the same manner.
Caution An IOU with mounted components in the maximum configuration
weighs about 21 kg.
8. Place the removed IOU on an antistatic conductive mat.
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