About this task
S002 
CAUTION: 
The power-control button on the device and the power switch on the power supply do not turn off the 
electrical current supplied to the device. The device also might have more than one power cord. To 
remove all electrical current from the device, ensure that all power cords are disconnected from the 
power source.
S006 
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.
S007 
CAUTION: 
This product contains a Class 1M laser. Do not view directly with optical instruments. 
Attention: 
•  Read “Installation guidelines” on page 57 to ensure that you work safely.
•  Power off the server and disconnect all power cords for this task.
•  Prevent exposure to static electricity, which might lead to system halt and loss of data, by keeping static- 
sensitive components in their static-protective packages until installation, and handling these devices with 
an electrostatic-discharge wrist strap or other grounding system.
Watch the procedure. A video of the installation and removal process is available: 
•  YouTube: 
https://youtube.com/playlist?list=PLYV5R7hVcs-DoEcxrm2zKNpaKOdZ3f8Qc
•  Youku: https://list.youku.com/albumlist/show/id_59636516
Procedure
Step 1.  If necessary, remove the cover of the drive bay filler from the front bezel. 
Chapter 4. Hardware replacement procedures 157