Lenovo System x3630 M4 Installation And Service Manual page 216

Step 11. After removing the CD/DVD drive out of the media cage, slide the drive-retention clip from the side
of the drive. Save the clip, as you may need to use it when installing a replacement drive.
Note: If you are installing a drive that contains a laser, observe the following safety precaution.
Statement 3
CAUTION:
When laser products (such as CD-ROMs, DVD drives, fiber optic devices, or transmitters)
are installed, note the following:
• 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.
• 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.
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Lenovo System x3630 M4 Installation and Service Guide
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