Troubleshooting - Motorola V820 Service Manual

V810

Troubleshooting

Introduction
Known good replacement parts and assemblies
should be available to be used for trou-bleshoot-
ing by substitution, and for replacement of defec-
tive parts/assemblies. Defective circuit boards
should be forwarded to the appropriate Motorola
service facility for repair. Refer to the "Replace-
ment Parts" section of this manual for a list of
replacement part descriptions and part numbers.
CAUTION
Many of the integrated circuit devices
used in this equipment are vulnerable to
damage from static charges. An ESD-safe
workstation should be used when-ever
a transceiver is opened.
Troubleshooting and Repair
Refer to the disassembly instructions located in
the "Disassembly" section of this manual for
instructions on removing parts/assemblies.
Product Support Tools
Testing after Repair
After any repair work has been carried out, the
unit should be thoroughly tested to ensure that it
operates correctly. This is especially important if
the Logic / RF assembly is replaced.
For general repairs which do not include
replacing the Logic/RF assembly, simply placing
a call and checking signal strength, and transmit
and receive audio quality is normally sufficient.
When the Logic/RF assembly is replaced, the
unit must have a comprehensive test on a CDMA
cellular/PCS compatible
analyzers. See "Testing" for further details.
Placing a call on air is usually carried out at this
stage to complete the testing procedure.
(Note: The field test guide will also provide you
with additional information and help you in
investigating a problem.
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communications
© 2003 Motorola, Inc.