Contents SD39EAM-1r4
viii September 2005
CAUTION
Electrostatic discharge can damage or cause the failure of semiconductor devices such as
integrated circuits and transistors. The symbol at right may appear on a circuit board or other
electronic assembly to indicate that special handling precautions are needed.
• A properly grounded conductive wrist strap must be worn whenever an electronics
module or circuit board is handled or touched. A service kit with a wrist strap and static dissipative
mat is available from Siemens (PN15545-110). Equivalent kits are available from both mail order and
local electronic supply companies.
• Electronic assemblies must be stored in anti-static protective bags when not installed in equipment
DANGER
Electrical shock hazard
Explosion hazard
Will cause death, serious injury or property damage
• Remove power from all wires and terminals and verify that there
are no hazardous voltages before working on equipment.
• In potentially hazardous atmosphere, remove power from
equipment before connecting or disconnecting power, signal, or
other circuit, or extracting/inserting module.
• Observe all pertinent regulations regarding installation in
hazardous area.
• Ensure all devices are rated for hazardous (classified) locations.
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