Ensuring Radio Immersibility; Servicing; Accidental Immersion; Specialized Test Equipment - Motorola EX500 Basic Service Manual

Ensuring Radio Immersibility

5. Push the chassis assembly completely into the top of the front cover until it settles in place.
6. Be sure the O-ring is properly seated so that the radio is properly sealed.
7. Snap the bottom of the chassis into the front cover.
8. Reassemble the knobs, dust cover, antenna, and battery.
3.15 Ensuring Radio Immersibility
This section discusses radio immersibility concerns, tests, and disassembly and reassembly of
EX560•XLS radios.

3.15.1 Servicing

EX560•XLS radios shipped from the Motorola factory have passed vacuum testing and should be
capable of restoring the watertight integrity of the radio.
CAUTION: It is strongly recommended that the maintenance of the radio be deferred to qualified ser-
vice personnel and service shops. This is of paramount importance as irreparable damage to the radio
can result from service by unauthorized persons. If disassembly is necessary, unauthorized attempts
to repair the radio may void any existing warranties or extended performance agreements with Motor-
ola. It is also recommended that immersibility be checked annually by qualified service personnel.

3.15.2 Accidental Immersion

If the radio is accidentally dropped in water, shake the radio to remove the excess water from the
speaker grille and microphone port area before operating; otherwise, the sound may be distorted
until the water has evaporated, or is dislodged from these areas.

3.15.3 Specialized Test Equipment

This section summarizes the specialized test equipment necessary for testing the integrity of
EX560•XLS radios.
To ensure that the radio is truly a watertight unit, special testing, test procedures, and specialized
test equipment are required. The special testing involves a vacuum check of the radio and pressure
Radio Chassis
Figure 3-26 Fastening the Chassis
3-25