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Preventive Maintenance and Fault-finding
Page 7-12
Reference Guide: EN8000 MPEG-4 Part 10 (H.264/AVC) Encoders
ST.RE.E10233.1
7.7
Power Supply Problems/Green LED on Front Panel
Unlit
7.7.1 Symptoms
WARNING...
DO NOT ATTEMPT TO SERVICE THE POWER SUPPLY UNIT AS OPENING OR REMOVING
COVERS MAY EXPOSE DANGEROUS VOLTAGES OR OTHER HAZARDS. REFER ALL
SERVICING TO SERVICE PERSONNEL WHO HAVE BEEN AUTHORISED BY TANDBERG
TELEVISION.
Use the following techniques to fault-find the Encoder according to the observed symptom(s)
when a power supply failure is suspected.
7.7.2
Power LED Unlit
If the Encoder Power LED is unlit, fault-find the problem as detailed in Table 7.3.
Table 7.3: Power LED Unlit Fault-finding
Step
Action
If Result of Action is Yes…
If Result of Action is No…
1 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.
2 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.
3 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.
4 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.
7.7.3
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 7.4.
NOTE…
Failure to ensure a free airflow around the unit may cause overheating. This condition is detected by a
temperature sensor on the Base Board that may be used to trigger an automatic alarm.
Содержание EN8000
Страница 40: ...Options and Upgrades Page 3 2 Reference Guide EN8000 MPEG 4 Part 10 H 264 AVC Encoders ST RE E10233 1 BLANK ...
Страница 118: ...Picture in Picture Page 6 2 Reference Guide EN8000 MPEG 4 Part 10 H 264 AVC Encoders ST RE E10233 1 BLANK ...
Страница 150: ...Glossary Page A 16 Reference Guide EN8000 MPEG 4 Part 10 H 264 AVC Encoders ST RE E10233 1 BLANK ...
Страница 172: ...Language Abbreviations Page C 2 Reference Guide EN8000 MPEG 4 Part 10 H 264 AVC Encoders ST RE E10233 1 BLANK ...
Страница 174: ...Creating and Downloading a Logo Page D 2 Reference Guide EN8000 MPEG 4 Part 10 H 264 AVC Encoders ST RE E10233 1 BLANK ...
Страница 186: ...Audio Modes Page E 2 Reference Guide EN8000 MPEG 4 PArt 10 H 264 AVC Encoders ST RE E10233 1 BLANK ...
Страница 196: ...Accuracy of Frequency Sources Page F 2 Reference Guide EN8000 MPEG 4 Part 10 H 264 AVC Encoders ST RE E10233 1 BLANK ...