ARMA-C125-CRM
41
9.4
M
AIN
F
AULT
D
IAGNOSIS
Description of Problem
Probable Cause
Refer to
Section
Power is On but
Power On LED is off.
No line voltage at the AC input.
The secondary power supply has failed.
Circuit breaker has failed
9.5.1
9.5.5
9.5.1
RF is On but
RF On Led is off.
The RF output level is below set threshold.
The attenuation setting is too high.
The amplifier is muted.
9.8.1, 9.8.3
9.8.2
9.6.5, 9.6.6
Alarm LED is on.
The RF output level is too low.
The amplifier has overheated, but is not in shutdown
9.6.1- 9.6.4
Fault LED is on.
The amplifier has overheated & is in thermal shutdown.
The Power Amplifier has failed.
The Main Power Supply has failed.
The Controller has failed
9.7
9.6.1
9.5.3, 9.5.4
9.5.6
HIGH TEMP is displayed.
The amplifier internal temperature has exceeded 70° C.
9.7
LOW CURR is displayed.
The Power Amplifier has failed.
9.6.1
HIGH CURR is displayed.
The Power Amplifier has failed.
9.6.1
LOW VOLT meassage is
displayed.
The Power Amplifier has failed.
The Main Power Supply has failed.
The Secondary Power Supply has failed.
9.6.1
9.5.4
9.5.5
HIGH VOLT is displayed.
The Main Power Supply has failed.
9.5.4
HIGH REFL meassage is
displayed.
The output waveguide is blocked or broken.
The output waveguide is not properly connected.
9.9.2
9.9.1
WG SWITCH meassage is
displayed.
Incorrect mode setting on the amplifier.
The Redundant Interface Cable is not properly connected.
The Waveguide Switch is jammed or failed.
6.2.1, 6.3.2
The fan non-functional.
The fan has failed.
9.5
An unrequested switch has
occured.
The amplifier has overheated and is in thermal shutdown.
The Power Amplifier has failed.
The Main Power Supply has failed.
9.7
9.1
9.5.3
Mute LED is on but not from the
front panel.
The Discrete Interface RF Mute line is high or the U-link
is not installed.
9.6.6
Both Stand-by LEDs are on.
The Redundant Inteface Cable is broken or not connected.
9.10.2
The unit cannot be controlled
from the front panel.
The unit is set for Remote operation.
7.4
