RAD Data comm operation manual Opening the ASMi-31 Case, To open the ASMi-31 case

ASMi-31Installation and Operation Manual Chapter 2. Installation and Setup

Warning

Caution

Access to the inside of the equipment is permitted only to the authorized and qualified personnel.

To avoid accidental electric shock, always disconnect the interface cables and the power cord before removing the unit from its casing.

Line voltages are present inside ASMi-31 when it is connected to power and/or the lines. Moreover, under certain fault conditions, dangerous voltages may appear on the lines connected to the unit.

Any adjustment, maintenance and repair of the opened instrument under voltage must be avoided as much as possible and, when inevitable, should be carried out only by a skilled technician who is aware of the hazard involved. Capacitors inside the unit may still be charged even after the unit has been disconnected from its source of power.

ASMi-31 contains components sensitive to electrostatic discharge (ESD). To prevent ESD damage, avoid touching the internal components, and before moving jumpers, touch the ASMi-31 frame.

Opening the ASMi-31 Case

To reach the internal jumpers and switches of ASMi-31, it is necessary to open its case.

➤To open the ASMi-31 case:

1.Disconnect all the cables connected to ASMi-31.

2.Turn the unit over (bottom facing up).

3.Unscrew the four cover screws.

4.Turn the unit over (bottom facing down).

5.After the four screws released, remove the ASMi-31 top cover by pulling it straight up.

Setting the Internal Jumpers and Switches

The internal jumpers and switches located on the ASMi-31 printed circuit board (PCB) are identified in * Baud rates not applicable.

Figure 2-1. Their numbers under heading "Item" in Table 2-1correspond to the identification numbers shown in Table 2-1.

Installation and Setup 2-3

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