QM-7 SERIES SERVICE MANUAL
PAGE 1.1
JANUARY 2012
SUNRISE MEDICAL
For Powerchairs, the multimeter is one of the
most useful tools in the toolbox (
fi
gure .3.1). It
can be used to check wires, shorts, voltages,
resistance, and all manner of electrical circuits.
This tutorial is designed to help clarify the sym-
bols and socket options. This Section is meant to
be a General tutorial and may not apply to all of
the speci
fi
c options on the meter in use. Please
consult your user's manual, to avoid errant read-
ings.
1. The Common Port. (
fi
gure .3.3)
Generally, the black probe plugs in here
(negative) and as the name suggests, it’s the
common element to all of the testing circuits.
Think of it as the ground rail.
2. Voltage, Resistance and Continuity port.
This is a commonly used option. Connect
the red (positive) probe to this port when
fi
nding voltage readings, resistance readings
or when checking wire continuity. This is ex-
plained in more detail later in the tutorial.
3. Current up to 400mA.
This port is used for “counting electrons” in
a circuit, and thus their rate of
fl
ow (current
being the
fl
ow of electrons). You’ll notice that
this side is “fused”, so that you don’t end up
melting the meter’s circuits.
4. Current up to 10A.
Same as above, except it can take more cur-
rent, as the name suggests.
The Probes
The Ports
The Multimeter
Section 1
Probes are found on various multimeters (
fi
gure
3.2). The Probes connect the meter to the circuit.
Simply touch them to the directed area with the
Mulitmeter on the correct settings, and read the
display. Carefully follow instructions for place-
ment of the probes to avoid errant reads.
Fig. 3.2
Fig .3.1
Fig. 3.3
Multimeter Tutorial
