Fuse Replacement - Extech Instruments EX505A User Manual

6
Maintenance

6.3 Fuse Replacement

To avoid electric shock, disconnect the test leads from any source of voltage before open-
ing the meter.
Remove the test leads from the meter before replacing the battery or fuses.
Never operate the meter unless the back cover and the battery and fuse covers are in
place and fastened securely.
1. Disconnect the test leads from the meter and from the device under test.
2. Access the fuses by opening the meter back, which is secured by six Phil-
lips screws, silver in colour (see Section 3, Product Description). Four of
the screws are visible, and two are hidden by the tilt stand, as shown in
Section 3. Lift the tilt stand to access them.
3. Remove the old fuse by gently pulling and extracting it from its holder.
Install the new fuse into the holder. Always use a fuse of the proper size
and value (600mA/1000V fast blow for the 600mA range, 10A/1000V fast
blow for the 10A range).
4. Secure the meter housing before using the meter.
#NAS100177; r. AD/97993/98002; en-US
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