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ACP-5260 User Manual 24
The alarm board is located on the right side near the rear section. The alarm board
sounds an audible alarm when:
a. Any power supply module or redundant power supply fails
b. One of the system cooling fans or blowers fails.
c. Internal temperature of the chassis reaches 50°C (default setting)
To stop the alarm beep, simply press the Alarm Reset button on the front panel and
then take the necessary action to fix it.
4.1 Alarm Board Layout
The layout and detailed specifications of the alarm board are given below:
Figure 4.1: Alarm board layout
4.2 Alarm Board Specifications
Input Power: +5 V, +12 V
Input Signals:
! 7 FAN connectors
! One thermal board connector (support up to 8 thermal sensors in series)
! One power good input
! One alarm reset input
! One voltage signal connector (connect from backplane, includes ±12 V, ±5 V,
+3.3 V)
! One Hard Disk LED connector (connect from CPU card)
Output Signals:
! One LED board connector
! One Buzzer output