Tektronix A621, Instructions Manual

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Service safety summary
The Service safety summary section contains additional information
required to safely perform service on the product. Only qualified
personnel should perform service procedures. Read this
Service safety
summary and the General safety summary before performing any
service procedures.
To avoid electric shock. Do not touch exposed connections.
Do not service alone. Do not perform internal service or adjustments of
this product unless another person capable of rendering first aid and
resuscitation is present.
Disconnect power. To avoid electric shock, remove the current probe
from the circuit before removing any covers or panels, or opening the
case for servicing.
Use care when servicing with power on. Dangerous voltages or currents
may exist in this product. Disconnect power, remove battery (if
applicable), and disconnect test leads before removing protective
panels, soldering, or replacing components.
Verify safety after repair. Always recheck operation after performing a
repair.
Terms in the manual
These terms may appear in this manual:
WARNING.
Warning statements identify conditions or practices that
could result in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that
could result in damage to this product or other property.
Important safety information
A621 Instructions ix