Fault Handling - Jinhan JHJDS3012A Manual

7.2 Fault handling

1. If you press the "PRW" oscilloscope still black screen, no any display, please follow the
steps below:
(1) open the instrument battery back cover, and check whether there is a battery power supply
or leakage, bilge gas, etc
(2) if you have a multimeter to measure the lithium battery voltage on both ends (normal is not
lower than 3.0 V)
(3) check finished, restart the instrument.
(4) if still can't normal use this product, please contact us.
2, after the acquisition signal, the picture does not appear in the signal waveform, please
follow the steps below:
(1) check whether the probe is normal on the signal cables.
(2) check signal cable is normal on the BNC.
(3) check whether the probe is connected to the normal object under test.
(4) check whether the object under test signal.
(5) to collect the signal again.
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