Nautel FM10, Technical Instructions

Page: 48 / 200

10 000 WATT FM BROADCAST TRANSMITTER
FM10
Page 3-5
15 July 1997
Table 3-1 AC/DC Power Supply Controls and Indicators (Continued)
PANEL MARKING/
REF FIG NOMENCLATURE FUNCTION
DES NO. USED IN TEXT
A5A1DS6 MD-6
♦
PA VDC FAIL
PWR SPLY D
When turned on indicates one of the following:
Output of the 'D' PA switching power supply is/was in
excess of 55 VDC.
Temperature of the 'D' PA switching power supply's
heat sink is/was in excess of 98
°
C.
Any of the above failure conditions will cause the
PWR MDL D
circuit breaker to be tripped open.
Output of the 'D' PA switching power supply is/was
too low for the control voltage level being applied to
the
common
control circuitry.
Latching circuit maintains turned on state of local
alarm LED when cause of alarm has been removed
and operation has returned to normal.
PWR MDL D
circuit breaker has been set to
OFF
.
A5A1DS7 MD-6
♦
PA VDC FAIL
PWR SPLY E
When turned on indicates one of the following:
Output of the 'E' PA switching power supply is/was in
excess of 55 VDC.
Temperature of the 'E' PA switching power supply's
heat sink is/was in excess of 98
°
C.
Any of the above failure conditions will cause the
PWR MDL E
circuit breaker to be tripped open.
Output of the 'E' PA switching power supply is/was
too low for the control voltage level being applied to
the common control circuitry.
Latching circuit maintains turned on state of local
alarm LED when cause of alarm has been removed
and operation has returned to normal.
PWR MDL E
circuit breaker has been set to
OFF
.