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Troubleshooting
TDS 310, TDS 320 & TDS 350 Service Manual
6Ć37
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 6Ć27).
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 6Ć22).
Is
the display
readable and
stable?
Yes
No
No
Yes
Perform the Module
Isolation
troubleshooting
procedure (Figure 6Ć21).
Does
the scope power
on and pass all the
diagnostics?
Perform the Monitor
troubleshooting
procedure (Figure 6Ć23).
Perform the Front
Panel/Processor
troubleshooting
procedure (Figure 6Ć22).
Figure 6Ć20:ăPrimary Troubleshooting Procedure