Fan(S) Not Working/Overheating - TANDBERG evolution 5000 E5710 Instruction Manual

Preventive Maintenance and Fault-finding
Table 6.4: Power LED Unlit Fault-finding
Step Action
1 Check the Stand-by Switch. Is the 'I' at
the top?
2 Check Power LED. Is the Encoder still
working?
3 Check Power Source. Connect a
known-working piece of equipment to the
power source outlet. Does it work?
4 Check Power Cable and Fuse. Unplug
the power connector from the Encoder and
try it in another piece of equipment. Does it
work?
5 Check PSU Module and Fuse. Ensure the
power connector is unplugged. Remove the
fuse from the rear panel connector and
inspect it. Has the fuse blown?
6.8.3

Fan(s) Not Working/Overheating

The fans can be disabled at low temperatures to allow the unit to quickly
attain operational temperature. In the event of overheating problems,
refer to Table 6.5.
NOTE...
Failure to ensure a free air flow around the unit may cause overheating. This condition is detected by a
temperature sensor on the Base Board which may be used to trigger an automatic alarm.
Table 6.5: Fans Not Working/Overheating
Step Action
1 Check Fan Rotation. Inspect the fans
located at the sides of the enclosure. Are
the fans rotating? Check Base Board
temperature and fan (see the Build
Menu in Figure 4.9).
Page 6-12
If Result of Action is Yes...
The problem lies within the Encoder.
If the Encoder is clearly working normally
then the Power LED itself is probably at
fault. Call a Service Engineer.
The problem lies within the Encoder or
power cable. Proceed to next step.
The problem lies within the Encoder.
Proceed to next step.
Replace the fuse with one of the correct
type and rating (see Annex B Technical
Specification). If the PSU still does not
work, unplug the power cable and call a
Service Engineer.
If Result of Action is Yes...
Check that the Encoder has been installed
with sufficient space allowed for air flow
(see Chapter 2, Installing the Equipment). If
the ambient air is too hot, additional cooling
may be required.
Instruction Manual: evolution 5000 E5710 and E5720 Encoder
If Result of Action is No...
Rotate the Stand-by Switch so that the
'I' is at the top. If the problem persists
proceed to next step.
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.
If Result of Action is No...
Possible break in the dc supply from the
PSU module to the suspect fan(s). Call
a Service Engineer.
ST.TM.E10074.1