Introduction
WFM 90 and WFM 91 Service Manual xvii
Module Repair and Return. This service returns to you within 10 days the same
module that you shipped to Tektronix. The module shipped is repaired, tested,
and returned to you from the Beaverton, Oregon service center. It is not updated
to match current modules of the same type. Again, each module has a 90-day
service warranty.
1-800-TEK-WIDE. For more information about any of the Tektronix service
offerings, US and Canadian customers can call our 24-hour service number at
1-800-TEK-WIDE. Service training questions may require specialists who are
only available between 8 am – 5 pm, Pacific time.
Before You Begin
This manual is for servicing the WFM90 or WFM91 Handheld Waveform,
Vector, Picture, and Audio Monitor. To prevent injury to yourself or damage to
the instrument, 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.
When using this manual for servicing, be sure to heed all warnings, cautions, and
notes.