Hitachi RAS-14EH1 Service Manual page 4

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(6)Use a three wire type soldering iron including a grounding wire.

Metal plate (of aluminium, stainless steel, etc.)

Bare copper wire (for body earth)

Screw stop at the screwed

part using a rag plate

Use a high insulation mode (100V, 10MΩ or higher) when ordinary iron is to be used.

(7) In checking circuits for maintenance, inspection or some others, be careful not to have the test probes of

the measuring instrument shortcircuit a load circuit or the like.

Staple

Fig. 3 Grounding of the working table

Soldering iron

Fig. 4 Grounding a soldering iron

– 2 –

Working

table

Resistor of 1 M

(1/2W)

Earth wire

Grounding

wire

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Rac-14eh1