ADS 507165, Installation, Operation And Maintenance Manual

Page: 433 / 535

Maintenance and Troubleshooting 11-35
Note:
You must reactivate the monitor through a
direct ( serial ) connection before you can resume
wireless communications following SIM card
replacement.
26. Establish wireless communication with the monitor to verify
communication.
27. Recoil and secure the antenna cable to the cable tie mount
using a cable tie, if necessary. Refer to Installing the Antenna
in Chapter 3,
Communication , for more information.
Replacing the Fuses in the Monitor
The monitor contains a removable power regulator
secured to a special dome that resides inside the monitor enclosure
and is attached to the monitor top. If a regulator failure occurs, it
typically involves a bad fuse on the regulator board corresponding
to communications or sensors. The regulator board has
three fuses,
indicated by three color-corresponding LED lights on top of the
monitor, (ADS p/n 508071, 508072, and 508073) that may be
replaced independently upon failure.
The 5-volt blue fuse corresponds to the sensors and can be blown
due to a shorted sensor. If this fuse is blown, the monitor cannot
detect the sensors. The 3.3-volt
yellow fuse is associated with the
processor board. When blown, this fuse prevents the monitor from
logging data and performing successful communications. The red
(main input) fuse is related to the regulator board and rarely has
issues.
Refer to the Troubleshooting section beginning on page 11-44 to
identify whether a fuse may be the source of a particular problem
that has occurred within the
system and, if so, which
fuse may require replacement.
Note: If the troubleshooting procedures indicate that a
sensor may have shorted or a sensor may have shorted and
the 5-volt (blue) fuse on the power regulator in the monitor
corresponding to the sensor may have blown,
do not
connect the potentially shorted sensor to the same monitor