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IM 701510-01E
15-1
T
roubleshooting, Maintenance
and Inspection
15
15.1 Troubleshooting
• For corrective actions when a message appears on the display, refer to Section 15.2
“Error Messages and Corrective Actions” (page 15-3).
• If maintenance service is required, or if the instrument still does not operate even after
the proper corrective action has been taken, contact your nearest YOKOGAWA
representative as listed on the back cover of this manual.
Use the instrument according to these specific-
ations.
Instrument is not being used according to
its electrical and mechanical specifications.
Make sure that the correct addresses / parameters
are set for both program and instrument.
The floppy disk is not inserted properly.
Push the disk until the eject button pops up.
Data cannot be loaded on a
floppy disk.
The GP-IB addresses / RS-232-C parameters
set in the program differ from those used by
the instrument.
Making settings and performing
operation control are not
possible via the communication
interface.
* Refer to the Communication Interface User's Manual (IM 701510-11E).
12-1
*
*
While holding down the
INITIALIZE
key,
turn ON the power.
The power does not
come ON.
The source voltage is outside the rated range.
Connect the instrument to a source of the correct
voltage.
Symptom
Possible Cause
Corrective Action
Reference Page
3-5
Printer head is damaged or worn out.
Fuse is blown.
Verify it the fuse is blown, check the cause and
replace the fuse.
Instrument is faulty.
Nothing is displayed.
Reset the instrument to its factory settings.
Display appears abnormal.
Instrument is faulty.
Keys do not function.
Instrument is in remote mode.
Press the
LOCAL
key to activate local mode.
Other causes
Make correct trigger settings for the input signal.
Trigger settings are incorrect.
No trigger is caused.
Insufficient warm-up time
Allow instrument to warm up for at least
30 minutes after the power is turned ON.
No calibration has been performed.
Perform calibration.
The probe has not been calibrated.
Calibrate the probe.
Measured values are abnormal.
Incorrect probe attenuation
Set the correct attenuation.
Offset voltage is in use.
Set the offset voltage to "0".
Waveform inversion is ON.
Turn waveform inversion OFF.
The floppy disk is not inserted properly.
Floppy disk has not been formatted.
Set the plotter to listen-only mode.
Maintenance service is required.
No data is output to the internal
printer.
The plotter is not set to listen-only mode.
No data is output to the plotter.
Format the disk. The disk must be formatted
if it is a new disk.
Push the disk until the eject button pops up.
Data cannot be saved on a
floppy disk.
14-7
3-6
4-4
—
—
Chapter 6
—
4-6
3-8
5-4
5-2
5-5
—
—
12-1
12-2
While holding down the
INITIALIZE
key,
turn ON the power.
The communication interface cable is not
properly connected.
Connect the cable properly.
—
The RS-232-C setting parameters do not match.
Set the RS-232-C setting parameters correctly.
—
No data is output to the external
printer.
The type or format of printer do not match.
The printer is not set to the on-line.
The printer cable is not connect properly.
The chart paper of printer is not set.
Match the type and format of printer.
Set to the on-line mode.
Connect the cable properly.
Set the chart paper to the printer.
—
The phase of the waveform
of CH2 is shifted.
The phase shift is set.
Set the phase shift to 0 div.
8-17