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Maintenance
DPO4000 Series Service M anual
4-13
Troubleshooting Procedure
Figures 4--3 through 4--5 are troubleshooting procedure flowcharts. Use them to
troubleshoot an instrument failure. B egin with Figure 4--3.
NOTE. Before performing the troubleshooting procedure, remove the instrument
cabinet (see page 4--9 ).
Yes
No
Done.
Power on the
instrument.
Perform the AC Power Supply
troubleshooting procedure
(Figure 4--4).
Yes
No
Perform the Module Isolation
troubleshooting procedure
(Figure 4--5).
Does
the instrument pass
all the
diagnostics?
Does
the instrument
display the power-up
screen?
Figure 4- 3: Primary troubleshooting procedure