Manual

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CHAPTER SEVEN: MAINTENANCE, REPAIR, and WARRANTY
7.1 MAINTENANCE:
Contrex amplifiers do not require any scheduled maintenance, although it is a good idea to
occasionally check for dust build-up or other contamination.
7.2 AMPLIFIER FAULTS:
If an amplifier should cease to operate and one or more of the fault LED's are lit, review the sections
which follow on the fault in question for information and possible causes.
A FAULT CAN ONLY BE CAUSED BY ABNORMAL CONDITIONS. LOCATE AND
CORRECT THE CAUSE OF THE FAULT BEFORE REPEATED RECYCLING OF POWER TO
THE AMPLIFIER TO PREVENT POSSIBLE DAMAGE.
7.2.1 Table of Fault LED Conditions:
INPUT OR FAULT
CONDITION
RUN
LED
HS/ECB
LED
LS/ECB
LED
OVER VOLT
LED
OVER TEMP
LED
FAULT
OUTPUT
NORMAL
OPERATION
ON
OFF OFF OFF OFF NO
LIMIT + (ON) ON
OFF OFF OFF OFF NO
LIMIT - (ON) ON
OFF OFF OFF OFF NO
INHIBIT (ON) OFF
ON OFF OFF OFF NO
RESET IN (ON)
OFF OFF OFF OFF OFF NO
EXT. FAULT (ON)
OFF OFF OFF OFF OFF
YES
UNDER-VOLTAGE
(+15V)
OFF OFF OFF OFF OFF
YES
HS/ECB (LATCHED)
OFF
ON
OFF OFF OFF
YES
LS/ECB (LATCHED)
OFF OFF
ON
OFF OFF
YES
OVER-VOLTAGE B+
(LATCHED)
OFF OFF OFF
ON
OFF
YES
OVER TEMP
(LATCHED)
OFF OFF OFF OFF
ON YES
CHAPTER 7: MAINTENANCE, REPAIR, and WARRANTY