AVR 355 (serv.man6) - Harman Kardon Audio EMC - CB Certificate (repair manual). Page 45

 

 

- Page 37 of 42 - 

 

 

 

 

Report No.  98388 

 

*), C814, S-c; 
SB-R channel output signal off immediately.   
Other output signal normal operated.  Input current stabilised at 2,33A. 
No component damaged.  No hazard.  (Tested time: 10 min) 

N/A N/A 

*), C902, S-c; 
Unit shut down immediately.  Input current stabilised at 0,03A. 
No component damaged.  No hazard.  (Tested time: 10 min) 

N/A N/A 

**), C902, S-c; 
Unit shut down immediately.  Input current stabilised at 0,02A. 
No component damaged.  No hazard.  (Tested time: 10 min) 

N/A N/A 

*), C915, S-c; 
F901 opened immediately.  Input current stabilised at 0,03A. 
D991 damaged.  No hazard.  (Tested time: 10 min) 

N/A N/A 

**), C915, S-c; 
Unit shut down immediately.  Input current stabilised at 0,02A.   
No component damaged.  No hazard.  (Tested time: 10 min) 

N/A N/A 

*), D956 (A to C), S-c; 
All output signal off immediately.  Sub transformer primary winding 
heated up to 114K and thermal fuse opened after 7 min. 
Dielectric strength test OK.  No hazard.  (Tested time: 7 min) 

Sub transf. 

114K 

Sub transf.

150K 

*), D962 (A to C), S-c; 
All output signal off immediately.  Sub transformer primary winding 
heated up to 103K and thermal fuse opened after 7 min. 
Dielectric strength test OK.  No hazard.  (Tested time: 7 min) 

Sub transf. 

103K 

Sub transf.

150K 

*), C906, S-c; 
F/L and output signal off immediately.  Sub transformer primary winding  
heated up to 111K and thermal fuse opened after 8 min. 
Dielectric strength test OK.  No hazard.  (Tested time: 8 min) 

Sub transf. 

111K 

Sub transf.

150K 

*), Speaker output (Front-R channel), S-c; 
Unit shut down immediately.  Input current stabilised at 0,03A. 
No component damaged.  No hazard.  (Tested time: 10 min) 

N/A N/A 

*), Fan stalled 

(Left side of main 

heat-sink

);

 

Normal operated. 

Measured temperature for components;

 

1) Main transformer primary winding 
2) Main transformer core 
3) Sub transformer primary winding 
4) Sub transformer core 
5) PCB near D991 
and stabilised. Input current stabilised at 2,54A.   
No component damaged. No hazard.  (Tested time: 3 hr 50 min) 

 
 
 

1) 89,6K 
2) 72,7K 
3) 69,8K 
4) 64,9K 
5) 71,5K 

 
 
 

1) 150K 
2) 150K 
3) 150K 
4) 150K 
5) 110K 

*)  Tested voltage 253V               **)  Tested voltage 198V 

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