Fujitsu PRIMERGY CX400 M4 Operating Manual page 27

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You can prevent damage from the optical disk drive and the
CDs/DVDs/BDs, as well as premature wear of the disks, by observing
the following suggestions:
– Only insert disks in the drive when needed and remove them after
use.
– Store the disks in suitable sleeves.
– Protect the disks from exposure to heat and direct sunlight.
Laser information
The optical disk drive complies with IEC 60825-1 laser class 1.
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CAUTION!
The optical disk drive contains a light-emitting diode (LED), which under
certain circumstances produces a laser beam stronger than laser
class 1. Looking directly at this beam is dangerous.
Never remove parts of the optical disk drive casing!
Modules with Electrostatic-Sensitive Devices (ESD modules)
Modules with electrostatic-sensitive devices are identified by the following
sticker:
Figure 2: ESD label
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The ESD label can be different.
When you handle ESD modules, you must always observe the following points:
Switch off the server enclosure and remove the power plugs from the power
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outlets before installing or removing ESD modules.
CX400 M4
Operating Manual
Important information
27