TANDBERG E5780, Справочное руководство

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Preventive Maintenance and Fault-finding
Page 6-14 Reference Guide: evolution 5000 E5780 and E5782 Encoder
ST.RE.E10135.4
6.10.2 Power LED Unlit
If the Encoder Power LED is unlit, fault-find the problem as detailed in Table 6.4 .
Table 6.4: Power LED Unlit Fault-finding
Step Action If Result of Action is Yes… If Result of Action is No…
1 Check the Standby Switch. Is the ‘I’ at the
top?
The problem lies within the Encoder. Rotate the Standby Switch so that the ‘I’
is at the top. If the problem persists
proceed to next step.
2 Check Power LED. Is the Encoder still
working?
If the Encoder is clearly working normally
then the Power LED itself is probably at
fault. Call a Service Engineer. Proceed to next step.
3 Check Power Source. Connect a
known-working piece of equipment to the
power source outlet. Does it work?
The problem lies within the Encoder or
power cable. 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.
4 Check Power Cable and Fuse. Unplug
the power connector from the Encoder and
try it in another piece of equipment. Does it
work?
The problem lies within the Encoder.
Proceed to next step. The problem lies with either the cable
itself, or with the fuse in the plug.
Replace the fuse or try to substitute
another cable.
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?
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. Possible problem with the PSU module.
Call a Service Engineer.
6.10.3 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 If Result of Action is Yes… If Result of Action is No…
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 4.4).
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. Possible break in the dc supply from the
PSU module to the suspect fan(s). Call
a Service Engineer.
6.11 Lithium Batteries
The equipment uses the Dallas Semiconductor NVRAM DS1746WP which contains a Dallas
DS9034PCX Power Cap Lithium battery. This cell is not a USA Environmental Protection
Agency listed hazardous waste. It is fully encapsulated and should not be tampered with.