IBM System x3250 M4 Installation & User Manual page 55

CAUTION:
When laser products (such as CD-ROMs, DVD drives, fiber optic devices, or
transmitters) are installed, note the following:
v Do not remove the covers. Removing the covers of the laser product could
result in exposure to hazardous laser radiation. There are no serviceable
parts inside the device.
v Use of controls or adjustments or performance of procedures other than
those specified herein might result in hazardous radiation exposure.
DANGER
Some laser products contain an embedded Class 3A or Class 3B laser
diode. Note the following.
Laser radiation when open. Do not stare into the beam, do not view directly
with optical instruments, and avoid direct exposure to the beam.
Class 1 Laser Product
Laser Klasse 1
Laser Klass 1
Luokan 1 Laserlaite
`
Appareil A Laser de Classe 1
To install an optional DVD drive, complete the following steps:
1. Read the safety information that begins on page "Safety" on page vii and
"Installation guidelines" on page 25.
2. Turn off the server and peripheral devices and disconnect the power cords and
all external cables.
Note: When you disconnect the power source from the server, you lose the
ability to view the LEDs because the LEDs are not lit when the power
source is removed. Before you disconnect the power source, make a
note of which LEDs are lit; then, see the Problem Determination and
Service Guide for information about how to solve the problem.
3. Remove the server top cover (see "Removing the server top cover" on page
27).
4. Remove the DVD drive filler if it is installed. Pull the release tab (the rear of the
drive-retention clip) toward the right side of the server to release the clip; then,
while you pull the tab, push the DVD drive filler out of the bay. Save the DVD
drive filler for future use.
Chapter 2. Installing optional devices
37