Tektronix 410, Service Manual

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Safety Summary
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Observe all of the following precautions to ensure your personal safety and to
prevent damage to either the digitizing oscilloscope or the equipment con-
nected to it.
Do Not Perform Service While Alone
Do not perform internal service or adjustment of this product unless another
person capable of rendering first aid and resuscitation is present.
Use Care When Servicing With Power On
Dangerous voltages exist at several points in this product. To avoid personal
injury, do not touch exposed connections or components while power is on.
Disconnect power before removing protective panels, soldering, or replacing
components.
Power Source
The digitizing oscilloscope is intended to operate from a power source that will
not apply more than 250 V
RMS
between the supply conductors or between
either supply conductor and ground. A protective ground connection, through
the grounding conductor in the power cord, is essential for safe system opera-
tion.
Grounding the Digitizing Oscilloscope
The digitizing oscilloscope is grounded through the power cord. To avoid
electric shock, plug the power cord into a properly wired receptacle where
earth ground has been verified by a qualified service person. Do this before
making connections to the input or output terminals of the digitizing oscillo-
scope.
Without the protective ground connection, all parts of the digitizing oscillo-
scope are potential shock hazards. This includes knobs and controls that may
appear to be insulators.
Use the Proper Power Cord
Use only the power cord and connector specified for your product. Use only a
power cord that is in good condition.
Use the Proper Fuse
To avoid fire hazard, use only the fuse specified in the parts list for your prod-
uct, and which is identical in type, voltage rating, and current rating.
Specific Precautions