AVR 240 (serv.man13) - Harman Kardon Audio EMC - CB Certificate (repair manual). Page 44

 

 

- Page 2 of 7 - 

 

 

 

Report No.  65654 

 
 

 

 

Voltage (V) 0,9 or 1,1 times rated voltage ............. :

207V or 253V 

— 

 

Ambient temperature (

o

C) ...................................... :

24 -26 °C 

— 

Comp. 
No. 

Location  Fault 

Test V 

Test  
time 

Fuse 
No. 

Current 
through 
fuse 

Temperature/Results 

D104 

A - C 

S-c 

253 

30 min 

F907 

1,85 A 

Normal operating. 
Input current stabilised at 1,78A. 
R106

 

opened.  No hazard. 

C122 

- 

S-c 

253 

4 hr 

F907 

2,18 A 

FL display off immediately. 
Input current stabilised at 1,94A. 
R101 damaged. 
Main transformer primary winding 
heated-up to 130K and stabilised. 
Dielectric strength test O.K. 
No hazard. 

Q104 

C - E 

S-c 

253 

1 hr 

F907 

1,84 A 

Normal operating. 
Input current stabilised at 1,80A. 
No component damaged. 
No hazard. 

Q104 

B - C 

S-c 

253 

4 hr 

F907 

2,15 A 

FL display off immediately. 
Input current stabilised at 1,97A. 
R101, Q104, D101, D102 
damaged. 
Main transformer primary winding 
heated-up to 123K and stabilised. 
Dielectric strength test O.K. 
No hazard. 

C119 

- 

S-c 

253 

3 hr 

F907 

2,00 A 

FL display off immediately. 
Input current stabilised at 1,96A. 
Q104 damaged. 
Main transformer primary winding 
heated-up to 116K and stabilised. 
Dielectric strength test O.K. 
No hazard. 

C117 

- 

S-c 

253 

20 min 

F907 

1,79 A 

Normal operating. 
Input current stabilised at 1,79A. 
No component damaged. 
No hazard. 

D991 

AC - + 

S-c 

207 

10 min 

F907 
F903 
F904 

- Normal 

operating. 

Input current stabilised at 1,64A. 
F904 opened.  No hazard. 
(Repeated test three times with the 
same result) 

F No = Fault Number, S-c = Short-circuit, Dis = Disconnection