User manual

ACP-4362/4360 User Manual 34
The alarm board is located under the system cooling fan. The alarm board makes an
audible alarm when:
1. Any power supply module of the redundant power supply fails
2. One of the system cooling fans fai1s
3. The internal temperature of the chassis is too high
To stop the alarm beep, simply press the Alarm Reset button on the front panel and
then take the necessary action to fix it.
5.1 Alarm Board Layout
The layout and detailed specification of the alarm board are given below:
Figure 5.1: Alarm board layout
5.2 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, supporting six volt-
ages: +-12V, +-5V, +3.3V, +5Vsb)
! One “hard disk LED” connector (connect from the CPU card or the mother-
board)
Output Signals:
! One “LED board” connector
! One “buzzer” output