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 22
3.1 The Front Section of ACP-4320
3.1.1 Switches
Figure 3.1: The Switches on the front panel
Three switches are located on the front plate, behind the front door.
These switches are used for system power on-off, system reset and alarm
reset.
System Reset Switch: Press this switch to reinitialize the system.
Alarm Reset Switch: Press this switch to suppress or stop an audible
alarm. Whenever a fault in the system occurs (e.g., fan failure, or a too
high in-chassis temperature), an audible alarm is activated. Pressing this
switch will cause the alarm to stop.
Power On-Off Switch: Use this switch to turn on/off the system power.
ALARM
RESET
POW ER
SYSTEM
RESET