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VOLTCRAFT MT-52 Bedienungsanleitung Seite 51

5 in 1 multi-dmm 100jahr
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12 Troubleshooting
In purchasing the DMM, you have acquired a product which has been designed to the state of the art and is operation-
ally reliable� Nevertheless, problems or errors may occur� For this reason, the following is a description of how you
can eliminate possible malfunctions yourself�
Always follow the safety instructions!
Problem
The multimeter does not
work�
No measured value
change�
Repairs other than those described above may only be carried out by an authorised specialist� If you have
queries about handling the measuring device, contact our technical support service or other technical
personnel�
13 Cleaning and care
13.1 General information
To ensure the accuracy of the multimeter over an extended period of time, it should be calibrated once a year�
Apart from occasional cleaning and fuse replacements, the meter requires no servicing�
Information on changing the battery and fuse is provided below�
Regularly check the technical safety of the instrument and measuring leads, e�g� check for damage to the
housing or squashing etc�
13.2 Cleaning
Always observe the following safety instructions before cleaning the device:
Live components may be exposed if covers are opened or parts are removed (unless this can be done
without tools)�
The connected lines must be disconnected from the measuring device and all measuring objects prior to
cleaning or repairing the device� Switch off the DMM�
Possible cause
Is the battery dead?
Is a wrong measuring function activated
(AC/DC)?
Did you use the wrong measuring
sockets?
Is the fuse defect?
Is the "HOLD" function activated?
Suggested solution
Check the status�
Replace batteries�
Check the display (AC/DC) and switch
the function if applicable�
Compare the connection with the infor-
mation from the operating instructions�
Check the fuses�
Press the "HOLD" button�
51

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