Advantech PCA-6186 2.13 Front Panel Connectors (CN16, 17, 18, 19, 21&22)

PCA-6186 User’s Manual 22
2.13 Front Panel Connectors (CN16, 17, 18, 19, 21&22)
There are several external switches to monitor and control the PCA-
6186.
2.13.1 Power LED and Keyboard Lock (CN16)
CN16 is a 5-pin connector for the keyboard lock and power on LED.
Refer to Appendix B for detailed information on the pin assignments. If a
PS/2 or ATX power supply is used, the system's power LED status will be
as indicated below:
Table 2.1: PS/2 or ATX power supply LED status
Power mode LED (PS/2 power) LED (ATX power)
System On On On
System Suspend Fast flashes Fast flashes
System Off Off Slow flashes
2.13.2 External speaker (CN17)
CN17 is a 4-pin connector for an extenal speaker. If there is no external
speaker, the PCA-6186 provides an onboard buzzer as an alternative. To
enable the buzzer, set pins 3-4 as closed
CN16