Troubleshooting: table 4, Troubleshooting 22, Continued – APC SMARTSLOT DP300E User Manual
Page 28: Checking operation
 
22
The following table shows the solution to common prob-
lems with the operation of the Triple Chassis.
Continued on next page
Problem
Possible
Cause
Solution
Status LED is off
The chassis is 
not receiving 
adequate 
power.
See “Powering the Silcon 
Triple Chassis” on page 18, 
and verify that you are not 
exceeding current require-
ments.
Status LED is 
flashing quickly
The chassis 
has not been 
configured. 
Configure the Triple Chassis. 
See “Configuring via the 
Monitoring Port” on page 10.
Status LED is 
blinking slowly
The chassis is 
not communi-
cating with 
the UPS.
Verify that the supplied UPS 
cable is properly connected 
to the Triple Chassis and to a 
communications port on the 
UPS.
Attached acces-
sory cannot iden-
tify UPS model or 
nominal output 
voltage.
The acces-
sory firm-
ware does not 
support 3-
phase UPSs.
You may be able to upgrade 
the firmware of the acces-
sory. Call APC Customer 
Support.
Table 4: Trouble-
shooting