User manual
Table Of Contents
- Chapter 1 General Information
- Chapter 2 System Setup
- 2.1 System installation
- 2.2 Installing motherboard
- 2.3 Installing passive backplane & CPU card
- 2.4 Installing plug-in cards
- 2.5 Installing disk drives
- 3.1 The Front Section of ACP-4320
- 3.2 Replacing the fans
- 3.3 Cleaning the filters
- 3.4 Replacing the power supply
- 4.1 Alarm board layout
- 4.2 Alarm board specifications
- 4.3 Switch settings
- 4.4 Thermal sensor
- Appendix A Exploded Diagram
- Appendix B Safety Instructions
- B.1 English
- B.2 German - Wichtige Sicherheishinweise

ACP-4320 User Manual 34
CN16: Power Good input
Pin 1 Power Good A Pin 2 GND
CN17: Alarm Reset connector
Pin 1 Alarm reset Pin 2 GND
CN18: LED Board connector
Pin 1 GND Pin 2 +5V Signal
Pin 3 +12V Signal Pin 4 -5V Signal
Pin 5 -12V Signal Pin 6 HDD Signal
Pin 7 Power Good Signal Pin 8 Power Fail Signal
Pin 9
Temperature Good
Signal
Pin 10
Temperature Fail
Signal
Pin 11 FAN Good Signal Pin 12 FAN Fail Signal
Pin 13 N/A Pin 14 +3.3V Signal
Pin 15 +5VSB Signal
CN26: External HDD LED connector
Pin 1 HLED_ACT Pin 2 N/A
J1: External speaker
Pin 1 Buzzer Pin 2 +5V
SW1: Fan number select switch
Pin 1 GND Pin 2 FAN_SEL1
Pin 3 GND Pin 4 FAN_SEL2
Pin 5 GND Pin 6 FAN_SEL3
Pin 7 GND Pin 8 Reset
Table 4.1: Summary of the connectors on the alarm board