Motorola V60 Series Manual page 55

Tall buildings, hills or mountains, valleys, inside buildings, etc, can "block" the RF signal and
give a false impression that the telephone package is defective. Some examples would be, inside
the center of a building with few or no windows, an under-ground parking facility where the
signal is virtually blocked in both directions (receive/transmit) by the structure, driving through
tunnels, etc.
7. Inspect the Coil Cord
Assure that the phone to coil cord connection is good. Closely inspect the male connection at the
end of the coil cord and the female connection on the bottom end of the handset for missing or
damaged pins, corrosion, etc.
8. Assure that all Components are Receiving Power and have a good Ground Path
Refer to the electrical diagrams in section 4 to assure that power and ground is present for each
component.
9. Inspect and Test the Handset
Use a known good handset to determine whether the problem is with the portable or mobile mode.
Test a known good handset in the mobile mode. If the system functions correctly with a known
good handset, then the mobile side of the system is not likely the problem. Make several trials
with the known good handset and the original, to rule out the possibility of an intermittent
problem with either mode.
If the problem is suspected to be with the portable mode, assure that the battery is fully charged
and not defective. Use a known good battery when testing in portable mode. Inspect the handset's
antenna for damage and assure that it is properly secured and extended when testing in portable
mode.
The handset utilizes different circuitry internally for each mode; therefore a handset might operate
correctly in the portable mode but not in the mobile mode. For example if the coil cord receptacle
on the bottom of the handset is defective, then the handset would function properly in the portable
mode, but may present integration issues when handset is placed in cradle for mobile mode.
Assure that the handset is not using the "Lock" security feature before troubleshooting the system.
The handset will not function if the phone is locked. Assure that steps '1' thru '9' have been
performed before deciding that a component is defective and returning it to the warranty
department.
10. Troubleshooting Procedures
If all of the steps in this procedure have been completed, and the problem was not found, then go
to the troubleshooting procedures that pertain to the malfunction (sections 6.2 thru 6.10) and
continue with the problem-solving process.
Mercedes Benz Telephone Manual v4.6
4.0 Troubleshooting Section
Date: 09/01/2004