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 32
The alarm board is located behind the front panel of ACP-4320 chassis
and below the system fan. The alarm board makes an audible alarm when:
• Any power supply module of the redundant power supply fails
• One of the cooling fans fai1s
• Internal temperature of the chassis is too high
To stop the alarm beep, simply press the Alarm Reset button on the front
panel.
4.1 Alarm board layout
The layout and detailed specifications of the alarm board are given
below:
Figure 4.1: Alarm board layout