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ACP-1320BP User Manual 18
4.1 Introduction
The alarm board is located in the middle section, between the driver bay and the
power supply. The alarm board gives an audible alarm when:
! A cooling fan fails
! Chassis internal temperature is too high
To stop the alarm beep, simply press the Alarm Reset button on the front panel, then
take the necessary actions to remedy the situation.
4.2 Alarm Board Layout
The layout and detailed specification of the alarm board are given below:
Figure 4.1 Alarm board layout
4.3 Alarm Board Specifications
Input Power: +5 V, +12 V
Input Signals:
! 7 fan connectors
! One ‘thermal sensor’ connector (supports up to 8 thermal sensors in series)
! One ‘power good’ input
! One ‘alarm reset’ input
! One ‘voltage signal’ connector (connect from the backplane, and support six
voltages:
±
12 V,
±
5 V, +3.3V, +5 Vsb)
! One ‘hard disk LED’ connector (connect from the CPU card or the motherboard)
Output Signals:
! One ‘LED board’ connector
! One ‘buzzer’ output