Cleaning and Maintaining the System
HD11 XE Getting Started
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The circuit boards in the system are manufactured using surface mount technol-
ogy. Circuit schematics are excluded for the following reasons:
• Repairing these boards requires special equipment and technicians trained in
repairing surface mount boards.
• The density of components on the circuit board prevents the online system
diagnostics from identifying component failures. Therefore, it is nearly impos-
sible to identify component failures without special test fixtures available only
at the Philips factory.
Electrostatic Discharge Guidelines
Follow these electrostatic discharge (ESD) guidelines when performing service or
maintenance procedures to avoid the possibility of inadvertent deterioration or
destruction of sensitive electronic components:
• Avoid working in carpeted areas that are not approved for ESD.
• Use a grounding wrist strap to be properly grounded. The system should be
plugged into the power outlet and turned off.
• Use a grounding mat for assembly work on sensitive areas.
WARNING
To protect your safety, you must follow ESD guidelines when performing service
and maintenance procedures.
CAUTION
If you use a vacuum cleaner to clean the interior of the system or any ESD-sensi-
tive part of the system, take the necessary static discharge precautions to avoid
damaging the electronics.
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