Argo MAGICO 9.2 AMG26MIR, Technical Data & Service Manual

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7-7 Checking electrical components
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Measurement of insulation resistance
The insulation is in good condition if the resistence exceedes 1 MOhm
a)
power supply wires
Clamp the earthed wire of the power supply wires with the lead clip of the insulation resiatance tester and measure the resistance
by placing a probe on either of the power wires (fig.1). Then measure the resistance between the earthed wire and the other
power wires (fig.1). Clamp an alluminium plate fin or copper tube with the lead clip of the insulation resistance tester and measure
the resistance by placing a probe on N terminal, and then on L terminal in the terminal plate (fig.2).
b)
measurement of insulation resistance for electrical parts
Disconnect the lead wires of the desired electrical part from terminal plate, PCB assy, capacitor, etc. Similarly disconnect the
connector, then measure the insulation resistance (fig.1 to 4). Refer to electric wiring diagram.
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Checking continuity of fuse on PCB assy
Remove PCB assy from electrical component box (fig.5), then pull out the fuse from PCB assy.
Check continuity of fuse by the multimeter (fig.6).
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Checking motor capacitor
Remove the lead wires from the capacitor terminals, and then place a probe on the
capacitor terminals as shown in fig.7. Observe the deflection of the pointer, setting
the resistance measuring range of the multimeter to the maximum value.
The capacitor is "good" if the pointer bounces to a great extent and the gradually
returns to its original position. The range of deflection and deflection time
deffer according to capacity of the capacitor.
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