A. Internal Speaker
(Buzzer)
B. PWR LED/Speaker
Power LED/Speaker
On JD1 header, pins 1-3 are used for
power LED indication, and pins 4-7
are for the speaker. See the tables
on the right for pin denitions. Please
note that the speaker connector
pins (4-7) are used with an external
speaker. If you wish to use the on-
board speaker, you should close pins
6-7 with a jumper.
Speaker Connector
Pin Settings
Pin Setting Denition
Pins 4-7 External Speaker
Pins 6-7 Internal Speaker
Internal Speaker
The Internal Speaker, located at SP1,
can be used to provide audible indica-
tions for various beep codes. See the
table on the right for pin denitions.
Refer to the layout below for the loca-
tions of the Internal Buzzer (SP1).
Internal Buzzer (SP1)
PinDenition
Pin# Denitions
Pin 1 Pos. (+) Beep In
Pin 2 Neg. (-) Alarm
Speaker
PWR LED Connector
PinDenitions
Pin Setting Denition
Pin 1 Anode (+)
Pin2 Cathode (-)
Pin3 NA
A
B