RAD Data comm HCD-E1 - Manual (Page 50)

Chapter 2 - Installation and Setup HCD-E1 Installation & Operation Manual
2-4 Installation and Setup 11/12/00 10:36
Warning
Access to the inside of the equipment is permitted only to authorized
and qualified service 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 HCD-E1 when it is connected to power
and/or to the lines. Moreover, under external fault conditions
dangerous voltages may appear on the lines connected to the unit.
Any adjustment, maintenance, and repair of the opened instrument
under voltage should 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 instrument may
still be charged even after the instrument has been disconnected from
its source of supply.
Caution
HCD-E1 contains components sensitive to electrostatic discharge (ESD). To
prevent ESD damage, avoid touching the internal components. Before
moving jumpers, touch the HCD-E1 frame.
Opening the HCD-E1 Case
To reach the internal jumpers and switches of HCD-E1, it is necessary to
open its case. To do this, proceed as follows:
1. Disconnect all the cables connected to the HCD-E1.
2. Turn the unit over (bottom facing up).
3. Unscrew the four cover screws (see Figure 2-2) and keep them in a safe
place.
4. Turn the unit over (bottom facing down).
5. After the four screws are released, remove the HCD-E1 top cover by
pulling it straight up.