Harris Broadcast Flexiva FAX 10KW, Technical Manual

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Section-6 Diagnostics
October 28, 2013
6 ‐ 2
Copyright ©2013, Harris Broadcast WARNING: Disconnect primary power prior to servicing. 888 ‐ 2720 ‐ 001
Also available on the front panel is an RF sample port, this is a convenient way to sample the RF output of the
transmitter. This is a sample of Total RF Out from the Directional Coupler built into the Transmitter Power Block that
internally connects to the 1 5/8" connector. On 20/30/40kW Transmitter Systems, this front panel port samples the
RF output of weach power block. To get the RF sample of the transmitter taken from the transmitter system
Directional Coupler, open the front door and locate the SMA connector on the Multi ‐ Unit Interface panel. This is the
sample that comes from the 3 1/8" output connector on top of the transmitter cabinet.
Table 1: Front Panel LED Troubleshooting Table
Symptom Cause and Solution
EXCITER LED is Green Exciter that is on ‐ air is operating with no alarms or faults. Note: In dual exciter systems the
transmitter will not display the fault status of the off ‐ air exciter.
EXCITER LED is Yellow Exciter relay has tripped. Check the off ‐ air exciter RF output. The relay trips on RF power from
exciter being too low.
EXCITER LED is Red On ‐ Air exciter has a fault. Refer to the exciter LED’s and manual for further information.
DRIVE CHAIN LED is Green All IPA’s in all power blocks are operating normally with no faults.
DRIVE CHAIN LED is Yellow IPA Relay has tripped due to low power on either A or B side. Check IPA Module LED’s and fault
log for further information.
DRIVE CHAIN LED is Red IPA is faulted. Check IPA module LED’s in each power block if both A and B sides are green check
RF Switch Board in each power block. IPA faults are VSWR, Over Current,Under
Voltage,Overdrive or OverTemp
POWER AMP LED is Green All PA modules in all power blocks are operating with no faults.
POWER AMP LED is Red One or more PA Modules are faulted or removed from the transmitter. Check fault log for
further details. PA faults are VSWR, OverCurrent,Under Voltage,Overdrive or OverTemp
POWER SUPPLY LED is
Green
All Power Supply modules in all power blocks are operating with no faults.
POWER SUPPLY LED is Red One or more Power Supply modules are faulted or removed from the transmitter. AC Mains has
dropped below 190 VAC or has lost a phase (3 ‐ Phases systems only). Check fault log and
individual power supply LED’s for further details.
OUTPUT LED is Green Transmitter is ON, above warning threshold, below power limit threshold and reflected power is
ok.
OUTPUT LED is Yellow Transmitter RF power has increased to 110%(Limit) or more of calibrated power, VSWR
Foldback has occurred or transmitter power has dropped below Warning threshold or reject
load is fault. Check exciter and IPA power and reflected power readings. Also check reject load
power and temperature.
OUTPUT LED is Red Transmitter power has dropped below Fault threshold set in System Service menu or VSWR
fault has occurred.
SYSTEM LED is Green Transmitter and Exciter are switched ON and operating normally with no faults or alarms being
reported.
SYSTEM LED is Yellow Transmitter is reporting alarms, these are not severe enough to fault system off. Check the fault
log. System alarms are due to control or cooling faults. APC is off, transmitter has switched to
Low Power Mode(possible reject load fault), fan fault, airflow fault, power limit, VSWR, mute
and backup control.