Tektronix 4000 Series, Service Manual

Page: 53 / 78

Maintenance
Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual
4- 15
¯
Push Utility.
¯
Push Utility page and then
select Self Test.
¯
Push OK Run Self Test.
¯
Determine failure from
Self Test Results.
¯
Use table to select module
to replace.
From the oscilloscope
power-up diagnostics
message display.
Oscilloscope is operating OK.
Does
the power-up
screen report any
errors?
Yes
No
Failed Test Most Likely Cause
Acquisition
CPU
Display
Front Panel
I/O
ROM
App Modules Main board
Main board
Main board
Front Panel (or Main board)
Comm module (or Main board)
Main board
Front Panel (or App Keys)
Continued from
Figure 4--3.
Figure 4- 5: Module isolation troubleshooting procedure