Tektronix Phaser 340 Service Manual page 4

Service safety summary
For qualified service personnel only: Refer also to the preceding Users Safety Summary.
Do not service alone: Do not perform internal service or adjustment of this product unless another person capable of
rendering first aid or resuscitation is present.
Use care when servicing with power on: Dangerous voltages may exist at several points in this product. To avoid
personal injury, do not touch exposed connections and components while power is on.
Disconnect power before removing the power supply shield, soldering, or replacing components.
Do not wear jewelry: Remove jewelry prior to servicing. Rings, necklaces, and other metallic objects could come into
contact with dangerous voltages and currents.
Power source: This product is intended to operate from a power source that will not apply more than 250 volts rms
between the supply conductors or between either supply conductor and ground. A protective ground connection by
way of the grounding conductor in the power cord is essential for safe operation.