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Chapter 7 I/O Unit (IOU) Replacement 7-19
8. 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.
9. Place the removed IOU on an antistatic mat.
10. Dismount the HDD (or filler panel) and the PCI cards on the detached IOU,
and remount them all on the replacing IOU. As for the PCI cassette, which
serves as the housing for PCI card, use the one which is mounted on the
replacing IOU. For the remounting procedures, see Chapter 12 and Chapter 13.
Note – Be sure to remount the PCI cards, filler boards, and HDDs in the same
locations in the replacement IOU as their mounting locations in the removed IOU.
Note – When mounting PCI cards and HDDs, fully insert them so that the
connectors are completely engaged.