6-2 888-2587-001 4/18/11
WARNING: Disconnect primary power prior to servicing.
FM HD Radio System
Section 6 Troubleshooting
DO NOT OPERATE TRANSMITTER WITH DOORS, SHIELDS OR PANELS
REMOVED.
6.2 Diagnostics
A wealth of information is obtainable via the ZHD+ transmitter’s front panel LEDs and
Diagnostic display, and the HDx-FM front panel LEDs and GUI to help discern the
cause of a malfunction or failure of the transmitter system.
Upon an LED or GUI fault indication, determine the fault by navigating to the Fault
Log through the Diagnostic display on the ZHD+ transmitter, or the GUI screen on the
HDx-FM exciter. It is highly recommended to write down the exact fault in a notebook.
Refer to corresponding documentation for troubleshooting and fault explanations for
malfunctioning device.
6.2.1 Boost Pro Fault Indication
The Boost Pro front panel LED will turn red if a fault condition is detected. Press INFO,
then FAULT SUBMENU to view a listing of statuses where the malfunction would be
indicated by the word FAULT.
To reset the fault, press INFO, then CONTROL SUBMENU, move cursor to point to
RESET FAULT. Press ENTER to clear the fault status. If the fault indication is still
present, the condition causing the malfuntion will need to be identified and corrected.
6.2.1.1 Boost Pro 3-Strike Faults
To prevent temporary fluctuations in power, temperature, current, or voltage from
causing nuisance fault-off conditions, a 3-strike routine is programmed into the sensing
circuits. If any of the following faults are indicated, it is because 3 separate momentary
fault conditions over a specified period of time, or a continuous fault condition over a
specified time has occured.
VSWR TRIP: Reflected power overload, based on the TX type and modulation
defined in the master configuration file.
FWD PWR TRIP: Forward power overload, based on the TX type and modulation
defined in the master configuration file.
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