Joy-it JT-DMSO2D72 - Troubleshooting

1. If the oscilloscope does not start up at power on, follow these steps:
Check whether the battery is installed and confirm whether the battery level is
enough.
If the battery level is not enough, use the power adapter to charge.
Restart the instrument aer the battery level is enough.
Contact your local distributor or directly keep touch with Joy-IT Support depart-
ment if the oscilloscope still can not be turned on normally.
2. If there is no display of waveforms on the screen when the oscilloscope is
turned on, follow these steps:
Check the probe to assure its proper connection to the input BNC.
Check the channel switch (Channel button) to make sure it has been turned on.
Check the input signal to verify it has been connected to the probe correctly.
Airm that all measured circuits have signals to output.
Turn up the magnitude for DC signals with large magnitude.
In addition, you may press the Auto button to perform an automatic detection of
signals at first.
Contact Joy-IT Technical Support department in time if there is still no display of
waveforms.
3. If the waveform of the input signal is distorted seriously, follow these steps:
Check the probe to assure its proper connection to the channel BNC.
Check the probe to assure its good connection to the measured object.
Check the probe to verify it has been well calibrated.
Otherwise, refer to the content about calibration described in this manual.
4. If the waveform is rolling continuously on the screen but can not be trigge-
red, follow these steps:
Check the trigger source to make sure it consistent with the input channel.
Check the trigger level to assure its correct adjustment.
You may press TRIGGER button to enter trigger menu, and use Up, Down, Right, Le
direction keys to adjust trigger level to return to signal.
9. TROUBLESHOOTING