Tektronix 684A, 744A, 784A Before You Begin

Introduction
TDS 684A, TDS 744A, & TDS 784A Service Manual xxi
Before You Begin
This manual is for servicing the TDS 684A and 7XXA Digitizing Oscilloscopes.
To prevent injury to yourself or damage to the oscilloscope, do the following
tasks before you attempt service:
HBe sure you are a qualified service person.
HRead the Safety Summary found at the beginning of this manual.
HRead Service Strategy in this section and Supplying Operating Power in
section 2.
When using this manual for servicing, be sure to heed all warnings, cautions, and
notes.