User Manual

G3S-800-140-031 Installation & Service Manual

044-05095 Rev. A 5-6 September 2001

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-800-140-031 power amplifier modules

2. Cooling fans

5-6.1 G3S-800-140-031 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.

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

CAUTION

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.

5-6.2 Cooling Fans

To replace a cooling fan, proceed as follows:

1. Remove amplifier module from subrack; see paragraph 5-6.1 preceding.

2. Loosen four snap fasteners that secure fan to amplifier module. Disconnect fan power con-

nector from amplifier module.

Install replacement in reverse order of steps 1 and 2 above.