Tektronix ECO8000 Series

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Table of Contents

Troubleshooting

Troubleshooting................................................................................................... 4-1

General troubleshooting strategy........................................................................... 4-1

Solutions to common problems ............................................................................ 4-2

Troubleshooting procedures ................................................................................ 4-4

Check the po

wer-on self test........................................................................... 4-4

Check the state of the Power Supply module LEDs ................................................ 4-5

Check the diagnostic readouts......................................................................... 4-7

Check the cable connections......................................................................... 4-15

Check the Combiner board voltages ................................................................ 4-16

Check the Main board 3.3 V supply and that the PLD is programmed ......................... 4-18

Check th

e Processor board........................................................................... 4-19

Check a channel threshold level..................................................................... 4-19

Check an HREF/Relay channel termination ....................................................... 4-20

Check that the channel is enabled................................................................... 4-21

Disable the Relay Check function for an HREF/Relay channel ................................. 4-22

Execute the Initialize Hardware function . .................. ................................ ....... 4-23

Replaceable Parts

Replaceable parts ................................................................................................. 5-1

Parts ordering information.................................................................................. 5-1

Using the replaceable parts lists............................................................................ 5-2

Index

ii ECO8000 Series Service Manual

Tektronix ECO8000 Series - Page 8