| 摘要 |
PURPOSE:To attain ease of manufacture, assembling and repair by fitting various electronic components for electronic circuits and switches such as a hook switch and a dial switch being components of a telephone set to one printed circuit board entirely to reduce number of leads. CONSTITUTION:Various electric components 17 for electronic circuits, a hook switch 17, a dial switch 19, a line selection switch 18, a function setting switch 29, a sound volume adjusting variable resistor 28, and pushbutton devices 20, 21 having pushbuttons 22, 23 to depress individually the switches 18, 19 are all mounted on one printed circuit board 15. Then the board 15 is tightened to a boss formed on the inner face of an upper case 1 and fixed. Then a lower case 2 is fixed to the upper case 1 to constitute a key telephone set main body.
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