SOUNDSTICKS III (serv.man2) - Harman Kardon Audio EMC - CB Certificate (repair manual). Page 78

 

 

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Report No.   158002 

 

 

 

 

1.4.5 Supply 

tolerance: 

Item 1.4.5 of IEC 60950 stipulates the 
tolerance of rated voltage is +6% and –10%, 
while GB4943-2001 makes a specification of 
tolerance of +10% and –10%. 

Class III equipment  

N/A 

1.7.1 

Power rating marking:  
Item 1.7.1 of IEC 60950 does not specify 
concrete figures of markings for supply voltage 
and frequency, instead, descriprions are give 
by examples. But the examples do not include 
Chinas`s mains voltage. 
GB4943-2001 stiplulates that: 
- A single rated voltage shall be expressed as 
220V 
- When a rated volrage range is given, the 
range shall cover 220V 
- When a variety of rated voltages or rated 
voltage ranges are given, one of them shall be 
220V, and shall be set as 220V when 
dispatched from the factory 
- Rated frequency or rated frequency range 
shall be 50Hz or include 50Hz 
- If a unit is not provided with a means of direct 
connection to the a.c. mains supply, it need not 
be marked with any electrical rating 

Class III equipment  

N/A 

1.7.12 

Plate and warning marking in Chinese: 
Item 1.7.12 of GB4943-2001 stipulates; 
instructions and equipment markings related to 
safety shall be in simplified Chinese  

Must be check when marketed 
in Chinese. 

N/A 

3.2.1 

Power supply plug: 
According to China`s particular standards for 
power supply plug, it is added in article 3.2.1 of 
GB4943-2001 that plug connecting equipment 
with a.c. mains supply shall be in accordance 
with requirements of GB1002 

Class III equipment 

N/A