Lucent Technologies Galaxy Power System 4848/100
4 - 2  Rectifiers   Issue 5  June 2000
Front Panel Display
Power Switch This three-position switch has two active states: 
• It controls the on/standby state of the rectifier.
• It is used to set the rectifier ID.
Status Indicators In addition to the ON and STBY LEDs, four other LEDs on the 
rectifier’s faceplate indicate the rectifier’s condition. 
• The ALM LED is red and lights when communication to the 
controller is lost, a thermal alarm occurs, or a rectifier fails. 
• The LIM LED is yellow and lights when the unit is in current limit. 
• The FAN ALM LED is red and lights when the fan inside the 
rectifier is not functioning properly.
• The EQL LED is yellow and lights when the rectifier is in equalize 
mode.
Current Display This display indicates the current of the rectifier. Upon specific 
no-power conditions, the 3-digit display will show informative 
messages.
Lamp Test To test the LEDs on the rectifier front panel, press the Lamp Test button 
on the controller.