Welch Allyn CP 150, Service Manual

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Safety
All users of the device must read and understand all safety information presented in this
manual before using or repairing the device.
United States federal law restricts this device to sale, distribution, or use by or on the
order of a licensed medical practitioner.
General safety considerations
• To ensure patient safety, use only accessories recommended or supplied by Welch
Allyn. Always use accessories according to your facility’s standards and according to
the manufacturer’s recommendations and instructions. Always follow the
manufacturer’s directions for use.
• Welch Allyn recommends that only Welch Allyn service personnel or an authorized
repair center perform warranty service. Performing unauthorized service on a device
that is within warranty may void the warranty.
Electrostatic discharge (ESD)
CAUTION
Electrostatic discharge (ESD) can damage or destroy electronic
components. Handle static-sensitive components only at static-safe
workstation.
CAUTION Assume that all electrical and electronic components of the
device are static-sensitive.
Electrostatic discharge is a sudden current flowing from a charged object to another
object or to ground. Electrostatic charges can accumulate on common items such as
foam drinking cups, cellophane tape, synthetic clothing, untreated foam packaging
material, and untreated plastic bags and work folders, to name only a few.
Electronic components and assemblies, if not properly protected against ESD, can be
permanently damaged or destroyed when near or in contact with electrostatically
charged objects. When you handle components or assemblies that are not in protective
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