Power Switch - Panasonic KX-MB2230JT Service Manual

KX-MB2230JT/ KX-MB2270JT/ KX-MB2515JT/ KX-MB2545JT/ KX-MB2575JT/ DP-MB310JT

6.12.18. Power Switch

1. Circuit diagram
2. Circuit Explanation
2-1 During the power on
2-1-1 Power switch is pushed → Q814 ON → the logic level of PWRSW port becomes high
→ If the switch is pushed more than 3seconds, the logic level of SHUTDWN port becomes high
→ Q810 ON → Q809 ON → Q808 OFF → set becomes OFF mode.
2-1-2 Power switch is pushed → Q814 ON → the logic level of PWRSW port becomes high
→ If the switch is pushed less than 3seconds and "set " key of operation panel is pushed, the logic level of SHUTDWN
port becomes high
→ Q810 ON → Q809 ON → Q808 OFF → set becomes OFF mode.
2-2 During the power OFF mode
Power switch is pushed → Q810 OFF → 809 OFF → Q808 ON → set power ON
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