User`s manual

21 Chapter 2 System Setup
2.2.2 Power Status LED
The Power Status LED indicates the status of the backplane voltage sig-
nals.
When a LED fails to light, it indicates a problem with one of the voltage
signals. An audible alarm is sounded. Check to make sure that the power
supply connector is properly attached to the backplane. If problem per-
sists, consult an experienced technician.
2.3 SCSI Storage
The SCSI storage is within the system data; please have to be very care-
fully to avoid damage the system data if you have to take the SCSI stor-
age out from chassis. When in doubt, consult with an experienced
technician.
a. Open the top cover and release two thumbscrews to draw out the
backplane holder until you could take out the SCSI Storage.
b. Please move away the fan cable from CN5, CN6 of system
alarm board
c. Please release four screws of system alarm board first and then
move away alarm board, then move away three-power cable, which
from power supply and SCSI cable which from RAID device.
See Figure 2.17
d. Undo the four screws of cushion, and then take SCSI storage out
carefully.
LED Description Light No light
+3.3V +3.3V signal Normal No output
+5V + 5V signal Normal No output
+12V +12V signal Normal No output
-5V - 5V signal Normal No output
-12V -12V signal Normal No output