places. After completing of the cleaning process, use a soft, absorbent, lint-less cloth to dry the area. Do not
brush or apply any isopropyl alcohol to the frame, front cover, or back cover.
Vent Port Handling Precaution
The portable device has a vent port that allows for pressure equalization in the device. The pressure
equalization vent is located at the battery compartment area. Never touch the equalization vent. Ensure that
no oily substances come in contact with this vent. Never poke this vent with any objects, such as needles,
tweezers, or screwdrivers. This create a leak path into the device and lost the submersibility of the device.
5.2
Safe Handling of CMOS and LDMOS Devices
Complementary Metal Oxide Semiconductor (CMOS) and Laterally Diffused Metal Oxide Semiconductor
(LDMOS) devices are used in this family of radios, and are susceptible to damage by electrostatic 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 CMOS/LDMOS circuits and are especially important in low humidity
conditions. Do not attempt to disassemble your radio without referring to the following caution statement.
CAUTION:
This radio contains static-sensitive devices. Do not open your radio unless you are properly grounded.
Take the following precautions when working on this unit:
● Store and transport all CMOS/LDMOS devices in conductive material so that all exposed leads are
shorted together. Do not insert CMOS/LDMOS devices into conventional plastic "snow" trays used
for storage and transportation of other semiconductor devices.
● Ground the working surface of the service bench to protect the CMOS/LDMOS device. It is
recommended that you use a wrist strap, two ground cords, a table mat, a floor mat, electrostatic
discharge (ESD) shoes, and an ESD chair.
● Wear a conductive wrist strap in series with a 100k resistor to ground. Replacement wrist straps that
connect to the bench top covering are Motorola Solutions part number 4280385A59.
● Do not wear nylon clothing while handling CMOS/LDMOS devices.
● Do not insert or remove CMOS/LDMOS devices with power applied. Check all power supplies used
for testing CMOS/LDMOS devices to be certain that there are no voltage transients present.
● When straightening CMOS/LDMOS pins, provide ground straps for the apparatus used.
● When soldering, use a grounded soldering iron.
● Handle CMOS/LDMOS devices by the package and not by the leads. Before touching the unit,
touch an electrical ground to remove any static charge that you may have accumulated. The
package and substrate may be electrically common. If so, the reaction of a discharge to the case
would cause the same damage as touching the leads.
5.3
Accessories Replacement Parts List
Table 24: Batteries
Part Number Description
NNTN8020_ 1650M 1700T Standard Lithium-Ion Battery
68015000841-EL
Chapter 5: Maintenance
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