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20.5 Troubleshooting
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Problem Check
LED does not light when
the unit is turned on.
Is power cord connected properly?
There is absolutely no
variation in the recorded
waveform.
Is the "Pretrigger standby" message displayed?
(When pretriggering is activated, triggering does not occur until the
current waveform is fully captured.)
Has the "Waiting for trigger" message appeared?
Check the trigger settings.
There is absolutely no
variation in the recorded
waveform.
Is the measurement range setting appropriate?
Has a low pass filter been set?
Is the vernier function is set?
Is the offset cancel is set?
The printed recording is
non-existent.
Is the recording paper back to front?
Even when the PRINT or
the COPY key is pressed,
no data is printed.
Make sure the destination of the printout created by pressing the PRINT
key or the COPY key is set to "Internal Printer."
The printed recording is
very faint.
Are you using the correct (thermal) recording paper?
During memory recorder
operation, the apparent
frequency of the recording
is much lower than the
expected frequency.
This is likely to be an aliasing error.
Make the time axis range setting faster.
For details, see Appendix 3.2.
Recording lines are dense
or blurred.
Input signal contains ripple components. Make suitable filter settings at
input unit.
Recording lines are
duplicated.
When "Dotted line*" is selected as the printed line type in the
waveform display color settings, the top and bottom of the line become
separated by a 1-dot gap. With waveforms that have little variation, this
can cause waveform printing to appear variously as one line or as two
lines. To correct this, select "Solid line" as the printed line type.
The keys are dead and do
not respond.
Has the unit been put into the key lock condition (message "KEY
LOCK" appeared?
Press the KEY LOCK key to clear the key lock condition.
Is the unit being remotely controlled
("GP-IB REMOTE" is displayed, if the GP-IB interface is being used)?
Some channels cannot be
used.
Is the number of channels to be used restricted?
The size of a waveform
does not change, even if
the input range is changed.
Has the variable function been enabled?
Disable the variable function.
The "Internal MO" media
selection is not available.
Is the internal MO interface enabled?
NOTE
20.5 Troubleshooting
If the unit does not seem to operate normally, check the following points
before requesting service.
If none of the above conditions apply, and the cause of the problem is not
understood, try performing a SYSTEM RESET. All the settings will revert to
the factory settings. For details, see Section 12.6.3.
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