Hitachi RAS-5142CH - Page 4

(6) Soldering iron to be used should be a one with three wires (including an earth wire).
Metallic plate (of aluminium, stainless steel or other)
or conductive rubber sheet
<——— Work table
Resistor of 1 MQ (1/2W)
Staple the wire
7
Earth
wire
Bare copper wire (for body earthing)
Fig. 3. Earthing of Work Tabie
Soldering iron
<.____—————_ Earth wire
Screw here using a rag plate
Fig. 4. Earthing of Soldering Iron
An ordinary soldering iron may also be used, but in such case, be sure to provide a perfect insulation (10MQ
or more to 100volts).
(7) While checking the circuits during maintenance, inspection or the other, strictly avoid any shortcircuiting of the
load circuit or other by the test probe of the measuring instrument.