Auto Power Off; Maintenance - Pro'sKit MT-1280 User Manual

3.11 TRIODE hFE
1. Set the range knob to hFE.
2. Insert the test accessory into "COM" and "mA" terminal.
3. Verify the type of the transistor is NPN or PNP, insert the emitter, basic and
collector to the proper jack on test accessory.
3.12 NCV test (non-contact voltage detection)
Turn the rotary switch to NCV position, and place the top of the meter approach the
conductor. If the meter detects the AC voltage（≥AC 90V 50/60Hz）, the indicator
LED will be on, while the beeper will sounds alarms at different frequencies.
Note:
1. Voltage may still remain in the absence of any indication. The operator shall not
rely on non-contact voltage detector to check the presence of voltage. The
detection operation may be affected by various factors, including socket design,
insulation thickness and type.
2. When the voltage is input into the meter's input terminal, the voltage sensor LED
may be on as a result of induced voltage.
3. External sources of interference (like flashlight and motor) may trigger non-contact
voltage detection.

3.13 AUTO POWER OFF

After stop working around 15 minutes, the instrument will be auto off and get into
sleeping mode. To restart the meter, press "power" button twice for back to working
status.

MAINTENANCE

It's a precision meter, DO NOT try to verify the circuit
1. Beware of waterproof, dustproof and shockproof.
2. Do not operate and store the meter in the circumstance of high temperature, high
humidity, and flammability, explosive and strong magnetic field.
3. Use the damp cloth and soft solvent to clean the meter, do not use abrasive and
alcohol.
4. If the meter will not be used for a long time, the battery should be taken out.
4-1. When LCD displays "
instruction:
4-1-1. Remove the battery compartment screws and pull out the battery
compartment.
" symbol, the battery should be replaced as below
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