MXI101V TECHNICAL SERVICE MANUAL
2
2.1
2.2
2.3
SAFETY
NOTICES
This section provides general guidance and information for the operation, maintenance, and service personnel
who are familiar with the hazards of working with high-powered electronic circuits. This manual does not detail all
of the safety precautions which should be observed when servicing this or any other electronic equipment.
Service by inadequately trained or inexperienced personnel can result in personal injury or death and/or
damage to the equipment.
Important:
All personnel concerned with the servicing of this equipment should be thoroughly familiar with
standard first aid procedures for the treatment of electrical burns and shock, including cardio-pulmonary
resuscitation (CPR).
Use the “buddy” system, with one person performing the actual service and a colleague observing. The observer
must be familiar with the work being performed and within sight and sound of the person doing the work. The
observer should not be engaged in any other work or be otherwise distracted; he must be available
instantly
in
case of accident.
Always have the observer with you when you work on the transmitter.
B
ERYLLIUM
O
XIDE
W
ARNING
Internal thermal management in certain RF devices in this equipment is accomplished through the use of
Beryllium Oxide ceramic material. Do not break open any RF power transistors, or otherwise dismantle them.
Beryllium Oxide is a hard white ceramic used as insulation for heatsinking of RF power semiconductors. Beryllium
Oxide is a
poison
. In case of accidental breakage of devices,
do not inhale the resulting beryllium dust and
avoid getting beryllium dust in your mouth. Do not let beryllium into your blood stream through cuts or
open wounds
.
Seek
immediate
medical attention if the dust enters your body in any manner. Avoid cuts by
wearing gloves while picking up the broken pieces. Be careful – do not inhale dust while replacing or emptying
vacuum cleaner filter bags and wash your hands thoroughly afterward. Wash your hands thoroughly after
replacing RF power devices. Dispose of defective RF power devices only through approved toxic waste facilities.
Wear gloves when picking up the pieces. Wash your hands thoroughly after replacing devices. Dispose of defective
devices only through approved toxic waste facilities.
When cleaning up after an accidental breakage, remember to wear a respirator mask to avoid inhaling the dust while
replacing or emptying vacuum cleaner filter bags and to wash your hands well after servicing the vacuum cleaner. If
possible, use a wet vacuum, in which the dust gets trapped in water.
O
THER
T
OXIC
M
ATERIALS
The non-metallic coverings of some coaxial cables used in this equipment are
flammable
and can transmit fire
when ignited. Other wire coverings are not capable of supporting combustion but any non-metallic covering when
heated sufficiently can emit dense smoke and acid gases, which can be highly toxic and often corrosive.
Solvents and glues can emit toxic vapors and can be flammable. Read and understand the directions on the
containers and ensure that they are used only in well ventilated locations.
D
ANGEROUS
V
OLTAGES
This equipment has been designed to protect operating personnel from accidental contact with dangerous voltages,
by means of shields and covers. It is extremely important that any protective covering devices be kept in place at all
times.
While all practical safety precautions have been adopted to safeguard personnel from possible injury, both
supervisory and operating personnel are urged to ensure that the safety rules detailed below are followed as an
established routine at all times. The following four Rules are the standard safety guidelines for working with and
around transmitters.
TSM21Q-365 Rev 0 July 17, 2009
MXi101V
4
