Ericsson TT1222 Guide de l'utilisateur Page 73

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Preventive Maintenance and Fault-finding
7.1 Routine Checks
7.1.1 Cooling Fan
Caution!
The fan contained within this unit is not fitted with an insect / dust filter. Pay
particular attention to the environment in which it is going to be used.
There are no routine checks associated with this equipment other than to ensure
that the unit is adequately cooled. This equipment must never be operated unless
the cooling fan is working; this should be checked periodically.
7.1.2 Cleaning
Unplug the equipment from the power supply before cleaning. Do not use liquid or
aerosol cleaners. Use a damp cloth for cleaning the exterior of the Receiver.
7.2 Servicing
7.2.1 Conditions Requiring Servicing
Warning!
Do not attempt to service this product as opening or removing covers may expose
dangerous voltages or other hazards. Refer all servicing to service personnel who
have been authorised by Ericsson .
The following is a list of conditions which may indicate a need for servicing of the
product:
1. When the power supply cord or plug is damaged.
2. If liquid has been spilled, or objects have fallen into the product.
3. If the product has been exposed to rain or water.
4. If the product does not operate normally by following the operating instructions.
Adjust only those controls that are covered by the operating instructions or as
told by an Ericsson engineer. Failure to do so may render the product in an
unstable state; and may require extensive work by a qualified technician to
restore the product to normal operation.
5. If the product has been dropped or the case has been damaged.
EN/LZT 790 0002/2 R1A
7-3
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