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LED switches:
Push button switch "S3" and "S4" provides visual status of incoming and outgoing power via Red & Green
LEDs. To conserve battery power, the LEDs are not operational until the user presses and holds down on
each push button switch.
S3 - An LED (located to the right of connector P6) glows bright Red when the Power Distribution board is
providing MODEM power but only when the S3 momentary push button is held closed.
S4 - An LED (located to the left of connector P1) glows bright Green when input power to the Power
Distribution board is present but only when the S4 momentary push button is held closed.
5 Electrical Assembly