HK 3390 - Harman Kardon Audio EMC - CB Certificate (repair manual). Page 31

Read Harman Kardon HK 3390 EMC - CB Certificate online

 
 
- Page 25 of 43 - 
 
 
 
 
 Report 
No. 
98502 
 
 
 
16.5 
Adequate strain relief on external flexible cords 
Cord clip wedged in the 
enclosure 
 
Not possible to push cord back into equipment 
Checked by inspection
 
 
Strain relief device unlikely to damage flexible 
cord 
No sharp edges
 
 
For mains cords of Class I equipment, hazardous 
live conductors become taut before earth 
conductor 
Class II apparatus.
 
N/A 
16.6 
Apertures for external flexible cord: no risk of 
damage to the cord during assembly or movement 
in use 
No sharp edges
 
N/A 
16.7 
Transportable musical instruments and amplifiers 
fitted with detachable cord set with appliance inlet 
to IEC 60320-1 
The apparatus is not a  
transportable musical 
instrument and amplifier
 
N/A 
 
Transportable musical instruments and amplifiers 
fitted with detachable cord sets or with means of 
stowage to protect the cord 
The apparatus is not a 
transportable musical 
instrument and amplifier
 
N/A 
 
17 
ELECTRICAL CONNECTIONS AND MECHANICAL FIXINGS 
 
17.1 
Torque test to table 20: 
Screws fixing chassis to the
 main enclosure tested.
 
 
- screws into metal: 5 times 
See attachment, Table to 
EN/IEC 60065 7
th
 edition. 
 
- screws into non-metallic material: 10 times 
 
N/A 
17.2 
Correct introduction into female threads in non-
metallic material 
No female threads in  
non-metallic materials 
N/A 
17.3 
Cover fixing screws: captive 
Captivity not necessary
 
 
Non-captive fixing screws: no hazard when 
replaced by a screw whose length is 10 times its 
diameter 
Tested with screw with  
10 times diameter.
 
17.4 
No loosening of conductive parts carrying a 
current > 0,2 A 
Loosening is sufficiently 
prevented 
17.5 
Contact pressure not transmitted through plastic 
other than ceramic for connections carrying a 
current > 0,2 A 
No contact pressure  
transmitted through  
insulating material. 
 
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