18   U41615-J-Z156-1-76
Notes on Safety Important Notes
Batteries
V CAUTION!
● Incorrect replacement of batteries may lead to a risk of explosion. The 
batteries may only be replaced with identical batteries or with a type 
recommended by the manufacturer (see the Technical Manual for the 
system board under “Related publications” on page 63).
● Replace the lithium battery on the system board in accordance with 
the instructions in the Technical Manual for the system board (see 
“Related publications” on page 63).
Note about the Laser
The CD/DVD drive is classified for laser class 1 according to IEC 60825-1.
V CAUTION!
The CD/DVD drive contains a laser diode (LED). Sometimes, the LED 
produces a stronger laser beam than laser class 1. Direct view into the 
laser beam is dangerous.
Never remove parts of the CD/DVD drive assembly!
Notes on Handling CDs/DVDs and CD/DVD Drives
V CAUTION!
● Use only CDs/DVDs in proper condition in the CD/DVD drive of your 
server to prevent data loss, damage to the device and injuries.
● Therefore, check each CD/DVD for damage, cracks, breakage etc. 
before inserting it in the drive.
Please note that any additional labels applied may change the 
mechanical properties of a CD/DVD and cause imbalance.
Damaged and imbalanced CDs/DVDs can break at high drive speeds 
(data loss).
Under certain conditions, sharp-edged pieces of broken CDs/DVDs 
can penetrate the cover of the drive (damage to the device) and be 
thrown out of the device (danger of injury, particularly on uncovered 
body parts such as the face or neck).