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The designated replacement parts must be used at the moment of
maintenance.
The operator must cut off all relevant power supplies before opening the meter.
At the same time, the operator must avoid damage to the meter's elements by
ensure that he himself doesn't carry any static.
The meter can only be calibrated, repaired and maintained by professionals.
When the meter's case is opened, the operator must understand the fact that
the presence of some capacitance may promise the dangerous voltages even if
the power supply to the meter is cut off.
The operator should stop using and maintain the meter immediately if any
abnormality has been observed on the meter. The operator must see to it that
the meter cannot be in service unless it is proved conforming.
When the meter is left idle for a long period, the operator shall remove the
battery and place it in a place free from high temperature and humidity.
1.2 Input protection measures
The meter can sustain the maximum input voltage of 600V (DC/AC) at the
moment of voltage measurement.
The limit voltage is 250 ACV or the equivalent RMS voltage when the resistance,
continuity or diode is measuring.
The protective tube (F600mA/250V) is used for protection purpose when mA
current measurements are carried out. The protective tube (F10A/250V) is used
for protection purpose when A current measurements are carried out.
2. A Schematic Diagram for the Meter
2.1 A Schematic Diagram
①. LED light
②. Non-contact voltage indicator
③. LCD screen
④. "FUNC/HZ" selection key
⑤. Backlight & LED key
⑥. Rotary switch
⑦. Input socket
⑧. Hold key
⑨. NCV indicator
①
⑨
⑧
②
③
④
⑤
⑥
⑦
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