Hitachi RAK-18QXB Service Manual page 4

(6) Use a three wire type soldering iron including a grounding wire.
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 short circuit a load circuit or the like.
Metal plate (of Al. stainless steel, etc.)
Staple
Fig.3 Grounding of the working table
soldering iron
Fig.4 Grounding a solder iron
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Working table
Resistor 1MΩ(1/2W)
Earth wire
Grounding wire