Advantech AIMB-766 Manual de usuario descargar pdf (Pagina 32)

IPC-630 User Manual 24

The alarm board is located under the system fan. The alarm board makes an audible

alarm if:

! Any power supply module of redundant power supply fails

! The system fan fails

! Internal temperature of the chassis rises too high

To stop the alarm beep, simply press the Alarm Reset button on the front panel.

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: +5V, +12V

Input Signals:

! 2 fan connectors

! One thermal sensor connector

! One power good input

! One alarm reset input

! One voltage signal connector (optional, connect from power supply, includes +/-

12V, +/-5V, +3.3V)

! One HDD LED connector (connect from the CPU card/motherboard)

Output Signals:

! One LED board connector (optional)

Pin Definition:

Table 4.1: Summary of the connectors on the alarm board

CN1: Auxiliary External Power Connector, standard mini 4-pin power connector

Pin 1 +5 V Pin 3 GND

Pin 2 GND Pin 4 +12 V

CN3: External HDD LED connector

Pin 1 VCC Pin 2 HLED_ACT

CN4: Thermal sensor connector

Pin 1 GND Pin 2 TEMP

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 41 42

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Advantech AIMB-766 Manual de usuario Pagina 32