5-1
IM DL350-03EN
Troubleshooting, Maintenance, and Inspection
1
2
3
4
5
6
App
Index
5.1 If a Problem Occurs
Faults and Corrective Actions
• If a message appears on the screen, see the following pages for reference.
• If servicing is necessary, or if the instrument does not operate properly even after you have
attempted to deal with the problem according to the instructions in this section, contact your nearest
YOKOGAWA dealer.
Problem
Probable Cause
Corrective Action
Refer To
The instrument does not turn
on.
Using a power supply outside the
ratings.
Use a correct power supply.
2.5, 2.6, 2.7
Nothing is displayed.
The LCD is turned off by the auto-off
feature.
Press any key.
20.2*
The screen is displayed with
inappropriate colors.
Turn off the instrument and then turn it
back on.
2.9
The display is odd.
The system is not operating properly.
Turn off the instrument and then turn it
back on.
2.9
Channels and MATH
waveforms whose displays
are turned on do not appear
on the screen.
The display group containing the
waveforms that you want to display is
not selected.
Tap
MENU
>
Display
>
Select Group
,
and select a display group (1 to 4 or
Monitor).
5.1*
Keys do not work.
The instrument is in remote mode.
Tap the touch panel or press a key to
switch the instrument to local mode.
–
The panel and keys are locked.
Tap the touch panel or press a key.
20.5*
Other causes.
Perform a key test.
If the test fails, servicing is required.
5.3
Triggering does not work.
The trigger settings are not appropriate. Set the trigger conditions correctly.
Chapters 3, 4*
The measured values are not
correct.
Insufficient warm-up.
Warm up the instrument for 30 minutes
after turning on the power.
–
The instrument has not been calibrated. Calibrate the instrument.
1.6*
The probe’s phase has not been
corrected.
Perform phase correction properly.
2.11
The probe attenuation is not correct.
Set an appropriate value.
2.2*
Other causes.
Calibrate the instrument.
If the measured values are still not
correct, servicing is required.
1.6*
Cannot save to the specified
storage medium.
The storage medium is not formatted.
Format the storage medium.
6.2*
The storage medium is read-only.
Set the storage medium so that it is not
read-only.
–
No more free space on the storage
medium.
Delete unneeded files or use another
storage medium.
6.10*
Unable to configure or control
the instrument through the
communication interface.
The instrument’s address used by the
program is different from the specified
address.
Match the address used in the program
to the instrument’s address.
Communication
interface
user’s manual,
IM DL350-17EN
The interface is not used in a way that
conforms to the electrical or mechanical
specifications.
Use the interface in a way that
conforms to the specifications.
* User’s Manual, IM DL350-02EN
Chapter 5
Troubleshooting, Maintenance, and Inspection