Panasonic KX MC6020 - Color Laser - All-in-One - Page 91

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KX-MC6020HX
6.13.17. 5V Interlock Switch
This switch is designed for safety. Opening and closing the front/left cover switches ON/OFF 5V supply to LSU laser power supply.
6.13.18. Handset Hook Switch
When the handset is raised, the switch is turned off, and the signal of IC300-P34pin becomes low level.
When the handset is settled, the switch is turned on, and the signal of IC300-P34pin becomes high level.
Signal (IC300-P34pin)
On Hook High level
Off Hook Low level