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Troubleshooting
Maintenance
830
NOTE
Before performing the troubleshooting procedure, remove the
instrument cabinet (see page 813).
Does the
scope respond
correctly when the
front panel buttons
are pushed?
Yes
No
Done.
Yes
No
No
Yes
Push the ON/STBY
button to the on
position.
Can you
hear the fan
whirling?
Disconnect power cord. Check
that all the cables coming from
the Power Supply module and
the cabling between the
modules are securely attached.
Perform the Power Supply
troubleshooting procedure
(Figure 824).
When
the scope powers
on, do the front panel
lights come on and
then go off a short
time later?
Perform the Front
Panel/Processor
troubleshooting
procedure (Figure 819).
Is
the display
readable and
stable?
Yes
No
No
Yes
Perform the Module
Isolation
troubleshooting
procedure (Figure
818).
Does
the scope power
on and pass all the
diagnostics?
Perform the Monitor
troubleshooting
procedure (Figure
820).
Perform the Front
Panel/Processor
troubleshooting
procedure (Figure 819).
Figure 817:PrimaryTroubleshooting Procedure
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