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Troubleshooting
TDS 310, TDS 320 & TDS 350 Instruction Manual
833
No
No
Yes
No
Yes
Yes
No
Usethis procedure
to troubleshoot
display problems.
Is the
display legible
but thehorizontal
and/or vertical
display not
stable?
Is
pin 10 of
J901 at
+15 V?
Yes
No
Does
pin 2 of J901
havea signal
similar to
Figure 822?
Replace the
Monitor module.
Power off the oscilloscope
and disconnect the cable
from J901 on theMonitor
module. Turn the power back
on.
Yes
Does
pin 5 of thecable
havea signal similar
to Figure 823?
ReplacetheMain
board.
Yes
No
Does
pin 7 of J901 have
a signal with the
same levels as
Figure821?
Is
pin 1 of J2
on theLVPS
moduleat
15 V?
ReplacetheLow
VoltagePower
Supply module.
Figure 820:Monitor Troubleshooting Procedure