User manual

IPC-610 User Manual 30
The alarm board of ACP-4000 is located behind the cooling fan near the middle sec-
tion. The alarm board makes an audible alarm when:
a) Any power supply module of the redundant power supply fails
b) One of the cooling fans fail.
c) The Internal temperature of the chassis is too high
To stop the alarm beeping, 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 specification of the alarm board are given below:
Figure 4.1 Alarm Board Layout
4.2 Alarm Board Specifications
Input Power: +5V, +12V
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 / motherboard, sup-
porting six voltages:
±12V, ±5V, +3.3V, and +5Vsb)
! One ‘hard disk LED’ connector (connect from the CPU card / motherboard)
! Output Signals:
! One ‘LED board’ connector
! One ‘buzzer’ output