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Chapter X Maintenance Guide
10.1 Daily Maintenance
1. The tester should be used in a well-ventilated, dry, dust-free, and strong electromagnetic
interference environment.
2. If the tester is not used for a long time, it should be powered on periodically. It is usually
powered on once a month for at least 30 minutes.
3
．
After the tester works for a long time (8 hours), the power should be turned off for more than
10 minutes to keep the meter in good working condition.
4
．
After long-term use of the test leads, poor contact or disconnection may occur, which should
be regularly repaired.
10.2 Simple fault handling
Malfunction
Solution
After power on, there is no display and the
buttons do not respond.
Please check whether the power supply is normal
and the fuse on the rear panel is blown. If it is
blown, please replace the fuse.
After starting, the high-voltage indicator is
off, but there is a test voltage.
The high-voltage indicator is broken.
After the test fails, the alarm indicator is off.
The alarm indicator is broken.
After start up, the voltage is normal but no
current is output.
Please check whether the test leads are open, the
measured object is not in good contact, or the
measured object is open.
If any fault cannot be removed in time, please contact the company as soon as possible and we
will provide you with services in a timely manner.
10.3 Quality Assurance
The company guarantees that the products manufactured by it are subject to strict quality
confirmation, and the quality guarantee period of the factory products is one year. Any
manufacturing defects or failures during this period are repaired free of charge.
For users who modify the circuit, function or the quality warranty period by themselves, the
maintenance fee will be charged according to the actual situation.
