3 Board
M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
3-44
Huawei Technologies Proprietary
Issue 01 (2006-11-18)
Figure 3-29
PSU panel
PSU
ALM
VIN
V 0
DC/DC
lists detailed information about indicators on PSU panel.
Table 3-23
PSU indicators
ID
Color
Meaning
Indication
VIN
Green
Power input indicator
ON: Power input normal
OFF: Power input abnormal
ALM
Red
Warning indicator
ON: PSU alarm
OFF: PSU operation normal
VO
Green
Power output indicator
ON: Power output normal
OFF: Power output abnormal