IBM 7378, Problem Determination And Service Manual

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g. Remove the blue rails from the DVD drive and save them for future use.
h. If you are instructed to return the DVD drive, follow all packaging
instructions, and use any packaging materials for shipping that are supplied
to you.
2. To remove the UltraSlim DVD drive on models with eight 3.5-inch hard
disk drives, complete the following steps:
a. Read the safety information that begins on page vii and “Handling
static-sensitive devices” on page 151.
b. Turn off the server and peripheral devices, and disconnect the power cords
and all external cables.
c. Unlock and remove the left-side cover (see “Removing the left-side cover”
on page 181).
d. Open the bezel by pressing the button on the left edge of the bezel, and
rotate the left side of the bezel away from the server.
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IBM System x3400 M3 Types 7378 and 7379: Problem Determination and Service Guide