Handling Precautions - Motorola APX 5000 Service Manual

Sec 1: 2-2
2.2

Handling Precautions

Complementary metal-oxide semiconductor (CMOS) devices, and other high-technology devices,
are used in this family of radios. While the attributes of these devices are many, their characteristics
make them susceptible to damage by electrostatic discharge (ESD) or high-voltage charges.
Damage can be latent, resulting in failures occurring weeks or months later. Therefore, special
precautions must be taken to prevent device damage during disassembly, troubleshooting, and
repair. Handling precautions are mandatory for this radio, and are especially important in low-
humidity conditions.
2.2.1 APX 5000 R/ APX 6000 R Radios Only
If the radio battery contact area has been submerged in water, dry and clean the radio battery
contacts before attaching a battery to the radio. Otherwise, the water could short-circuit the radio.
If the radio has been submerged in water, shake the radio briskly so that any water that is trapped
inside the speaker grille and microphone port can be removed. Otherwise, the water will decrease
the audio quality of the radio.
• The APX5000/ APX 6000/ APX 6000Li radio has a vent port that allows
for pressure equalization in the radio. Never poke this vent with any
objects, such as needles, tweezers, or screwdrivers. This could create a
leak path into the radio and, in the case of APX 5000 R/ APX 6000 R
radios, the radio's submergibility will be lost.
• The pressure equalization vent is located adjacent to the battery contact
opening of the main chassis. Never touch the equalization vent. Ensure
that no oily substances come in contact with this vent.
• (APX 5000 R/ APX 6000 R Radios Only) The APX 5000 R/ APX 6000 R
radio is designed to be submerged to a maximum depth of six (6) feet, with
a maximum submersion time of 2 hours per U.S. MIL-STD. Exceeding
either maximum limit may result in damage to the radio. For specific U.S.
MIL-STD details, see Section
page 1:8-39.
Basic Maintenance: Handling Precautions
"8.10 Ensuring Radio Submergibility" on