GB Safety Instructions
The products identified in Service Manuals were manufactured to meet strict Quality and Safety Standards. It is imperative that the Safety Standards
are observed when carrying out repairs to ensure that the product always conforms to IEC 65 or VDE Regulations and the harmonised National Safety
Regulations, eg. Low Voltage Directive (73/23/EEC), the Low Voltage Electrical Equipment (Safety) Regulations, 1989 (UK) and the Electricity at
Work Regulations, 1989 (UK) before it is returned to the owner.
This symbol:!
is used to identify components which conform to IEC or VDE Guidelines! When these require replacement, for continued compliance and protection,
use only the original components specified in the Service Manual (List of Spare Parts). For continued protection against the risk of fire, the type and
rating of fuses (nominal value, characteristic and rupturing rating) used as replacements must be as specified by the Standards!
After any repair, it is imperative that the Leakage Current and/or Insulation Resistance is checked as described in this Safety Manual. If the result
of the check indicates that the product does not conform, the user / owner must be notified in writing. If the user / owner requests that the product
is to be returned in a defective condition, the written warning must draw notice to the risks.
In all cases:
� The mains plug and the fuse fitted (UK) must be checked and any defect found corrected.
� The mains lead, and any other connecting leads, must be checked for damage and defects rectified. Check the insulation!
� The functional reliability of all tension relief and bending protection bushes provided in the product must be checked and defects rectified.
� For continued safety compliance, safety determining parts in the product must not be damaged or evidently unsuitable. This is especially valid for
insulators and insulating parts.
!
� Use specified parts only. For components and assemblies marked with the Safety Symbol the original specified spare parts only are strictly
to be used.
� Use, if applicable, only information published in Technical Bulletins or in the Infotip System.
� Thermally loaded solder pads and those passing large currents, known by experience to cause a risk, must be thoroughly cleaned and re-soldered.
� Ensure that the ventilation openings are not obstructed or contaminated with dust.
� Ensure the proper disposal of exhausted batteries and accumulators (hazardous waste - environmental protection!)
� For all receivers, ensure that the aerial system conforms to BSI CP 6330:1983 (UK).
� Maintain records of all checks, remedial action and disposals.
Safety Standard Compliance
After repairing a product which originally conformed to the Safety Class II (double insulated), the Insulation Resistance and / or Leakage Current with
the product switched on must be checked to VDE 0701 or to the National Safety Regulations quoted above.
The products covered by these Instructions conform to the Safety Class II, as identified by the symbol:
Warning: After repairs are carried out to parts within this product, the Safety Instructions given in VDE 0701 (Repair Instructions) and /
or VDE 0860 / IEC 65 / EN 60065 (Product Specification) must be observed.
!Components conforming to IEC or VDE Approval Specification! For replacement purposes, use parts with the same specification only!
MOSObserve the requirements when handling MOS Components!
Electrical Safety after repairs
According to the Product Liability Laws, the Manufacturer is responsible for ensuring that the product presents no danger to the user when used
correctly. This risk is especially important with products which are operated from the mains voltage supply. To ensure that safety parameters are
maintained especially after repairs have been carried out, it is imperative that the product is tested as specified in a recognised Test Procedure.
Products conforming to Safety Class II (insulated, Symbol)
Insulating resistance measurements as specified in VDE 0701/Part 200.
The insulation resistance between all electrical functioning stages and metallic cabinet parts that can be touched must be proved.
Measurement of the Insulation Resistance to VDE 0701
Connect an Insulation Test Meter (U = 500V DC) to both mains poles simultaneously and between the cabinet and all other functional parts (aerial
test
and connecting sockets, buttons, decorative trims, screws, etc.) made from metal or metal alloy. The product is fault free if:
R > 2M& at U = 500V DC
isoltest
Measuring time: > 1s
Note: The Insulation Resistance in some Safety Class II products can be < 2M&, depending upon construction and the value of discharge
resistors. In these cases, the Leakage Current is significant and must be checked.
Measurement of the Leakage Current to VDE 0701
Connect a Leakage Current Meter (U = 220V AC*) to both mains poles simultaneously and between the cabinet and all other functional parts (aerial
test
and connecting sockets, buttons, decorative trims, screws, etc.) made from metal or metal alloy. The product is fault free if:
Ileak < 1mA at Utest = 220V AC*
Measuring time: > 1s
* As, at the time of preparing these Safety Instructions, there is no British Standard Institute Standard that is equivalent to VDE 0701, use
a test voltage of 240V AC.
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