
Product Controls
Owner's Manual
22
LED Indicator
Color
Status
Description
PWR1
Green
Glowing solidly
The first power module outputs normally.
Flashing slowly
The first power module outputs HVCC or LVCC
alarm.
Flashing rapidly
The first power module outputs HVCC and LVCC
alarm simultaneously.
Off
The first power module is not installed.
PWR2
Green
Glowing solidly
The second power module outputs normally.
Flashing slowly
The second power module outputs HVCC or LVCC
alarm.
Flashing rapidly
The second power module outputs HVCC and LVCC
alarm simultaneously.
Off
The second power module is not installed.
BSC
Green
Glowing solidly
The voltage for the BSC is normal.
Flashing
An alarm is issued due to over-voltage or low voltage
for the BSC.
Off
The first or second power module is not installed.
Table 2-11 Descriptions on PSU Indicators
Note
The power module has two outputs including HVCC and LVCC.
2.6
Interconnect Backboard (ICB)
It connects the power, synchronization clock module, signaling gateway, voice and data gateway,
monitor module and I/O interface.
2.6.1
Front View
The front side and interfaces of the ICB are described below.