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WFM 90 and WFM 91 Service Manual
6–1
Maintenance
This section contains instructions for servicing the WFM 90 or WFM 91
Handheld Waveform, Vector, Picture, and Audio Monitor that include the
following information:
H Preparation procedures to observe before performing maintenance
H Procedures for inspecting and cleaning the instrument
H Module removal and replacement instructions
H Troubleshooting procedures
H After-repair adjustments to the instrument
H Repackaging instructions to prepare the instrument for shipment
If the instrument does not function properly, troubleshooting and corrective
measures should be taken immediately to prevent additional problems.
NOTE. Contact your local Tektronix representative for information on where to
return your instrument if it requires repair during the warranty period.
Preparation
Please read and follow these preparation instructions before attempting to
perform any maintenance or service to the instrument.
Make sure of the following before beginning any instrument service:
H The maintenance or service of this instrument must be performed by
qualified service personnel only.
H Read the Service Safety Summary located at the beginning of this manual
before attempting to perform any maintenance or service to the instrument.
H Read the Operating Information section of this manual before attempting to
perform any maintenance or service to the instrument.
Servicing Prerequisites