AVR 230 (serv.man12) - Harman Kardon Audio EMC - CB Certificate (repair manual). Page 42

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 - 
IEC 60065, 6th edition : 1998
 - 
- Page 37 of 37 - 
 
 
   
 Order 
No. 
14399 
 
 
 
FAULT CONDITION TESTS (continued) 
Comp. 
No 
Fault Test 
Short 
current 
Test time
Fuse No
Current 
through 
fuse 
Mains power/temperatures/results 
Speaker 
Terminal 
S-c 254,4 
Surroun

(
L - ch.)
 
10 min 
F907 
F905 
F906 
Unit shut down immediately. 
Input current stabilised at 0,01A. 
No component damaged. 
No hazard. 
Top cover 
opening 
Blocked 254,4  - 
10 
min  F907, 
F903, 
F904, 
F905, 
F906 
1,62 A 
Unit shut down after 9 min. 
Input current stabilised at 0,01A. 
No component damaged. 
No hazard. 
Pmax 
operating
 
Maximum 
non-
clipped 
output 
signal 
254,4 - 
24 
min F907, 
F903, 
F904, 
F905, 
F906 
3,53 A 
The components are heated up to: 
- Main transf. pr. Winding  : 137K 
- Main transformer core 
: 90K 
- Q803 body 
: 58K 
- PWB near Q804 
: 39K 
and main transformer’s thermal fuse
opened after 24 min. 
Dielectric strength test OK. 
No hazard. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
F No = Fault Number, S-c = Short-circuit, Dis = Disconnection
 
 
 
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