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Digital Multimeter
Basic Maintenance
9
Basic Maintenance
XWWarning
To avoid possible electric shock or personal injury:
• Remove the test leads and any input signals before opening
the case or replacing the battery or fuses.
• Repairs or servicing covered in this manual should be
performed only by qualified personnel.
Cleaning the Meter
XWWarning
To avoid possible electric shock, personal injury, or damage to
the meter, never allow water inside the case.
WCaution
To avoid damaging the Meter, never apply abrasives, solvents,
aromatic hydrocarbons, chlorinated solvents, or methanol-
based fluids to the Meter.
Periodically wipe the Meter case with Fluke “MeterCleaner
TM
” or a damp cloth and mild
detergent.
Dirt or moisture in the A or mA µA input terminals can affect readings and can falsely
activate the Input Alert feature without the test leads being inserted. Such contamination
may be dislodged by turning the Meter over and, with all test leads removed, gently
tapping on the case.
Thoroughly clean the terminals as follows:
1. Turn the Meter off and remove all test leads.
2. Soak a clean swab with isopropyl alcohol and work the swab around in each input
terminal to remove contaminates.
Opening the Meter Case
WCaution
To avoid unintended circuit shorting, always place the
uncovered Meter assembly on a protective surface. When the
case of the Meter is open, circuit connections are exposed.
To open the Meter case, refer to Figure 1 and do the following:
1. Disconnect test leads from any live source, turn the rotary knob to OFF, and remove
the test leads from the front terminals.
2. Remove the battery door by using a flat-blade screwdriver to turn the battery door
screws 1/4-turn counterclockwise.
3. The case bottom is secured to the case top by three screws and two internal snaps (at
the LCD end). Using a Phillips-head screwdriver, remove the three screws.