AVR 445 (serv.man2) - Harman Kardon Audio EMC - CB Certificate (repair manual). Page 38

 

 

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 Order 

No. 

72390

 

 
 

Comp. 
No. 

Location 

Fault   Test V 

Test 
time 

Fuse 
No. 

Current 
through 
fuse 

Temperature/Results 

C202 - 

S-c 253 

10 

min. F101 

10,7 A 

F101 opened after 32sec. 
Input current stabilised at 0,06A. 
Main transformer damaged. 
Dielectric strength test OK. 
No hazard. 

C202 - 

S-c 207 

10 

min. F101 

10,3 A 

F101 opened after 1min. 4sec. 
Input current stabilised at 0,03A. 
Main transformer damaged. 
Dielectric strength test OK. 
No hazard. 

D105 

A - C 

S-c 253 

2 

hr. 

20 min. 

F101 

2,72 A 

Normal operated. 
Input current stabilised at 2,72A. 
Sub transformer primary winding 
heated up to 105K and stabilised.
Dielectric strength test OK. 
No hazard. 

C215 - 

S-c 

253 

26 min. 

F101 

0,09 A 

Sub transformer primary winding 
heated up to 145K and thermal 
fuse opened after 26 min. 
Dielectric strength test OK. 
No hazard. 

D112 

A - C 

S-c 

253 

58 sec. 

F101 

2,93 A 

Sub transformer primary winding 
heated up to 151K and thermal 
fuse opened after 58 sec. 
Dielectric strength test OK. 
No hazard. 
 
(Repeated test two more times 
with similar result) 
 
- T/F opened at 152K after 57 sec.
- T/F opened at 155K after 55 sec.
No hazard. 

C116 - 

S-c 253 

1 

min. 

4 sec. 

F101 3,00 

A 

Sub transformer primary winding 
heated up to 152K and thermal 
fuse opened after 1 min. 4 sec. 
Dielectric strength test OK. 
No hazard. 
(Repeated test two more times 
with similar result) 
 
- T/F opened at 151K after 58 sec.
- T/F opened at 153K after 57 sec.
No hazard. 

F No = Fault Number, S-c = Short-circuit, Dis = Disconnection, O-I = Over Loaded 

TRF No:  IEC/EN 60065F