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
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4.2 Alarm board specifications
Input Power: +5V, +12V
Input Signals:
• 7 fan connectors
• One thermal board connector (connects up to 8 thermal sensors in
series)
• One Power Good connector
• One alarm reset connector
• One voltage signal connector (connect from back plane, includes 12V,
5V, 3.3V)
• One HDD LED connector (connect from the CPU card/motherboard)
Output Signals:
• One LED board connector
• One LCM board connector
• One Buzzer output
Pin Definition:
Table 4.1: Summary of the connectors on the alarm board
CN1: External power connector, standard mini 4-pin
power connector
Pin 1 +12V @ 2A max. Pin 2 GND
Pin 3 GND Pin 4 +5V @ 2A max
CN4: Thermal sensor (LM75) connector
Pin 1 +5V Pin 2 T_SCLK
Pin 3 T_SDAT Pin 4 GND
CN13: Voltage detect input connector
Pin 1 5VSB Pin 2 GND
Pin 3 GND Pin 4 -5V
Pin 5 +5V Pin 6 +3.3V
Pin 7 -12V Pin 8 +12V