Summary Status Led Unlit; Fan(S) Not Working/Overheating - Ericsson RX8000 Series Reference Manual

Chapter 7
7.4.6

Summary Status LED Unlit

If the Summary Status LED is unlit, fault-find the problem as detailed in Table 7.2.
Table 7.2 Summary Status LED Unlit Fault-finding
Step Action
1 Check Status LED. Is the
unit still working?
2 Check Power Source.
Connect a known-working
piece of equipment to the
power source outlet. Does it
work?
3 Check Power Cable and
Fuse. Unplug the power
connector from the unit and
try it in another piece of
equipment. Does it work?
4 Check PSU Module(s) and
Fuse(s). Ensure the power
connector is unplugged.
Remove the fuse from the
rear panel connector and
inspect it. Has the fuse
blown?
7.4.7

Fan(s) Not Working/Overheating

The unit is fitted with fans, all of which run continuously. The unit contains a
temperature sensor that will highlight if there is a cooling problem. In the event of
overheating problems, refer to Table 7.3.
Note:
7-8
If Result of Action is Yes...
If the unit is clearly working
normally then the Status LED
itself is probably at fault. Call a
Service Engineer.
The problem lies within the unit
or power cable. Proceed to next
step.
The problem lies within the unit.
Proceed to next step.
Replace the fuse with one of
the correct type and rating. If
the PSU still does not work,
unplug the power cable and call
a Service Engineer.
Failure to ensure a free air-flow around the unit may cause overheating.
This condition is detected by a temperature sensor; it may be used to trigger
an automatic alarm.
If Result of Action is No...
Proceed to next step.
The problem lies with the power
source. Check building circuit
breakers, fuse boxes, etc. If
problem persists, contact the
electricity supplier.
The problem lies with either the
cable itself, or with the fuse in
the plug. Replace the fuse or try
to substitute another cable.
Possible problem with the PSU
module. Call a Service
Engineer.
EN/LZT 790 0005 R1A