User manual

17 PCA-6028 User Manual
Chapter 2 Connecting Peripherals
2.8 Front Panel Connectors (JFP1, JFP2 & JFP3)
There are several external switches to monitor and control the PCA-6028.
2.8.1 Power LED and keyboard lock (JFP3)
JFP3 is a 5-pin connector for the power LED. Refer to Appendix B for detailed infor-
mation 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:
2.8.2 External speaker (JFP2)
JFP2 is a 4-pin connector for an external speaker. The PCA-6028 provides an
onboard buzzer as an alternative to an external speaker. To enable the buzzer, set
pins 3 and 4 as closed.
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 Flashes Flashes
System Off Off Off
JFP1 PWR_SW Reset
JFP2
HDD LED SNMP
Speaker
JFP3 PWR_LED & Key Lock
JFP1 PWR_SW Reset
JFP2
HDD LED SNMP
Speaker
JFP3 PWR_LED & Key Lock