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20.1. Notes for Service Technicians
• Only service technicians may open up the Notebook housing or
upgrade or modify your Notebook.
• Use only original replacement parts.
• Before opening the housing, disconnect all power and connecting
cables and remove the battery. If the Notebook is not disconnect-
ed from the power supply before being opened, there is a risk that
components could be damaged.
• Internal components of the Notebook may be damaged by elec-
trostatic discharge (ESD). Carry out repairs, as well as system en-
hancements or modifications, at an ESD workplace. If such a work-
place is not available, wear an antistatic cuff or ensure you are
touching an earthed, metallic object. We will charge for any repairs
to damage caused by incorrect handling.
20.2. Information on Laser Radiation
• The Notebook can contain laser equipment classified as laser
class 1 to laser class 3b. The equipment meets the requirements for
laser class 1.
• By opening the housing of the optical drive, you will have access to
laser equipment classified up to laser class 3b.
The following should be observed when removing and/or opening
this laser equipment:
• The integrated optical drive contains no parts that require repair or
maintenance.
• Repairs to the optical drive should only be carried out by the man-
ufacturer.
• Do not look directly into the laser beam, even when using optical
instruments.
• Do not expose the laser beam. Avoid exposing your eyes or skin
to the laser beam – either directly or through scattered laser radia-
tion.
