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8-18 SPARC Enterprise M4000/M5000 Servers Service Manual • August 2009
■ If your server does have a label covering part of the I/O unit DC-DC converter,
start from one corner of the label and peel the label free of the I/O unit DC-DC
converter. The label can be re-used on the replacement I/O unit DC-DC
converter.
■ If your server does not have a label covering part of the I/O unit DC-DC
converter and has the DC-DC converter retainer, go to Step 1 (
FIGURE 8-13).
1. Disengage the old DC-DC converter from the slot.
2. Insert the new DC-DC converter in the slot (
FIGURE 8-12).
■ If the DC-DC converter will be seated in the slot on the DC-DC converter riser
or directly on the I/O unit, push gently downward to seat the DC-DC
converter.
■ If the DC-DC converter will be seated in a DC-DC converter retainer, perform
the following steps:
a. Grasp the DC-DC converter retainer with one hand. With the other hand,
gently pull away the retention clip of the DC-DC converter retainer to
slightly widen the slot entrance for the DC-DC converter.
Note – Do not pull the retention clips of the DC-DC converter retainer too far out
when preparing to insert the DC-DC converter. This might cause the DC-DC
converter retainer retention clips to deform and prevent proper seating of the DC-
DC converter.
b. Insert the DC-DC converter in the DC-DC converter retainer.
3. Push gently downward to seat the DC-DC converter.
Ensure that the DC-DC converter is firmly seated in the slot and both notches on
sides of the DC-DC converter are secure in the retention clips of the retainer.