User's Manual

Table Of Contents

G3S-800-180-029 Installation & Service Manual

044-05112 Rev. A 5-5 April 2002

5-6 Field Replaceable Parts And Modules

The following parts and modules can be replaced in the field on site by a qualified technician with

experience maintaining RF power amplifiers and similar equipment:

1. G3S-800-180-029 power amplifier modules

2. Cooling fans

5-6.1 G3S-800-180-029 Power Amplifier Module

To replace a power amplifier module, proceed as follows:

1. Set both the RF ON On/Off/Reset switch and the power ON/OFF switch on the front panel of

the amplifier module to OFF.

2. Loosen two screws that secure amplifier module to subrack.

CAUTION

The amplifier is equipped with a spring clip on each side panel to prevent the amplifier

from being fully removed from the subrack via the front panel handles. When removing

the amplifier from the subrack, it is very important to support the amplifier such that the

rear of the module does not suddenly drop when it disengages from the track. A drop

such as this could damage the module or cause personal injury.

Figure 5-2 Amplifier Spring Clip Location

3. Use the handle on the front of the module, and with a steady even pressure, gently pull the

module about half way out of subrack until the spring-clips prevent the amplifier from being

removed (refer to figure 5-2).

4. Simultaneously press the front half of each spring clip towards the center of the amplifier and

resume removal of the amplifier.

Spring Clip