Instruction manual

111
SOLUTION: Observe amplifiers from the front of the power source cabinet. Note the
condition of the green LED on the upper left side of each amplifier front panel. The
green LED is normally on. A module fault in a specific amplifier is indicated when its
LED is not on. Replace the fuse or amplifier whose LED is not lit. Refer to paragraph
6.11.
6.5. OVERTEMPERATURE LAMP ON
If the power source OVERTEMP lamp is on, the following may be at fault:
1. Ambient temperature is too high.
SOLUTION: Operate power source between 0 and 35° C.
2. Fan or ventilation holes are blocked.
SOLUTION: Remove obstructions.
3. Fan not working.
SOLUTION: Replace fan. Consult factory.
6.6. OUTPUT FAULT LAMP ON
The OUTPUT FAULT lamp is lit when the power source output voltage cannot be maintained at
the set level. The following items may be at fault:
1. The output is overloaded.
SOLUTION: Remove the overload.
2. Programmable current limit is set too low for the load being driven.
SOLUTION: Compute and reset the correct programmable current limit level.
3. The external sense lines are not connected or are not connected correctly.
SOLUTION: Correctly connect the sense lines. Refer to paragraph 2.5.
4. Incorrect power source configuration. Check the ELT screen. It should show more
than 24 hours of operation. If it shows less than 24 hours consult the factory.