Preface

xii WFM90D and WFM91D ServiceManual

Contacting Tektronix
Phone 1-800-833-9200*
Address Tektronix,Inc .
Department or name (if known)
14200 SW Karl Braun Drive
P.O.Box 500
Beaverton, OR 97077
USA
Web site www.tektronix.com
Sales support 1-800-833-9200, select option 1*
Servicesupport 1-800-833-9200, select option 2*
Technicalsupport www.tektronix.com/support
1-800-833-9200, select option 3*
6:00 a.m. --5:00 p.m. Pacific Standard Time
*Thisphone number is tollfree in North America.After office hours, please leave a voice mail
message.
OutsideNorth America, contact a Tektronix sales office or distributor; see th e Tektronixweb
sitefor a list of offices.