Internal Buzzer (SP1)
The Internal Buzzer (SP1) can be
used to provide audible indications for
various beep codes. See the table on
the right for pin denitions.
A. Internal Buzzer
B. PWR LED/
Speaker Header
Internal Buzzer
Pin Denition
Pin# Denitions
Pin 1 Pos. (+) Beep In
Pin 2 Neg. (-) Alarm
Speaker
A
B
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 (Default).
Speaker Connector
Pin Settings
Pin Setting Denition
Pins 4-7 External Speaker
Pins 6-7 Internal Speaker (Default)
PWR LED Connector
Pin Denitions
Pin Setting Denition
Pin 1 Anode (+)
Pin2 Cathode (-)
Pin3 NA