
Rice. 9.11. Scheme for checking the central light switch: 1, 2, 3, 4, 6 - control lamps; 5 - battery
Connect control lamps according to the diagram in fig. 9.11. The switch stem must be in position O. When the switch stem is extended to position A, lamps 4 and 6 should light up, in position B, lamps 3, 4 and 6. When the stem is turned clockwise in position A or B, lamp 2 should light up turning counterclockwise, the brightness of lamp 2 should decrease and, when the stem is turned all the way, go out, while lamp 1 should light up. If at least one of the lamps does not light in the corresponding position of the switch, replace the switch (you can try to clean the contacts by disassembling the switch) .
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