Table of Contents
Advertisement
6.02 APPENDIX B: TROUBLESHOOTING
PROBLEM: Nothing happens at all when I turn it on.
SOLUTION: If you are operating your transmitter on primary AC power, verify that you
are providing AC power to the power input connector. If so, check the primary AC fuse.
If you are operating your transmitter on DC power, verify you are providing DC power to
the DC input connector. If so, check the DC power fuse. If fuses are open, replace. If
fuses blow again, contact Ramsey Technical Support.
PROBLEM: Everything seems to work, but I have no RF output power.
SOLUTION: The PX50 has an intelligent integrity checker built in to protect the transmit-
ter. Antenna VSWR, frequency lock, and temperature is continually monitored. If they
fall beyond a set range, the transmitter is disabled for protection. Verify PLL display
says LOCKED. Verify your antenna system VSWR is acceptable. Also check the operating
temperature of the transmitter. If it is above 60° C, check front air filters and check for
proper air flow.
PROBLEM: PLL will not lock.
SOLUTION: At the extreme ends of the frequency band, the PLL may not lock if the
power supply is low, for example running from batteries below normal operating volt-
age. If operating on DC, verify correct voltage. If the PLL still does not lock, contact
Ramsey Technical Support.
PROBLEM: One audio channel is dead.
SOLUTION: Check your audio input at the rear XLR connectors. It is easy to verify pres-
ence of audio by swapping Left/Right and see if the problem follows the cables or the
transmitter. If the opposite channel is dead, there is no audio on one audio input cable.
If the same channel is dead, contact Ramsey Technical Support.
PROBLEM: Distorted audio
SOLUTION: Usual cause is overdriving audio levels into the transmitter. Verify and re-
duce levels as needed in the Audio Setup Screen. You can also use the Auto Adjust fea-
ture in the Modulation Adjust Screen by pressing and holding the center button. This
will automatically adjust your levels to standard FM standards. Once levels are set, you
can also use the AML feature to constantly monitor audio levels and adjust them as
needed to prevent over-deviation.
PROBLEM: Temperature readings are abnormally high.
SOLUTION: The PX50 features a highly efficient cooling system. Fresh air is drawn in
through two air filter ducts on the front panel, is circulated throughout critical compo-
nents, and exhausted out the rear panel. Check the front air filters, and clean or replace
as needed. Check that rear exhaust air is not blocked. Make sure rack mounted instal-
lations do not have doors that prohibit fresh air input to the front panel.
19
Advertisement
Table of Contents
