DOWNLOAD Harman Kardon HK 3390 Service Manual ↓ Size: 1.81 MB | Pages: 57 in PDF or view online for FREE

Model
HK 3390
Pages
57
Size
1.81 MB
Type
PDF
Document
EMC - CB Certificate
Brand
Device
Audio
File
hk-3390.pdf
Date
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Page 35 of 43 -
 
 
 
 
 
 Report 
No. 
98502 
 
 
7.2 
TABLE: softening temperature of thermoplastics 
N/A 
Temperature T of part 
T - normal con-
ditions (
o
C) 
T - fault condi-
tions (
o
C) 
T softening 
(
o
C) 
 
 
 
 
 
 
 
10.3 
TABLE: insulation resistance measurements 
P 
Insulation resistance R between: 
R (MΩ) 
Required R (MΩ) 
Between mains poles (primary fuse disconnected) 
> 100 
2 
Between parts separated by double or reinforced insulation
> 100 
4 
 
 
 
 
10.3 
TABLE: electric strength measurements 
P 
Test voltage applied between: 
Test voltage (V) 
Breakdown 
Mains poles (primary fuse disconnected) 
1500Vac No 
Between parts separated by double or reinforced insulation
3000Vac No 
 
 
 
 
 
- 
Page 36 of 43 -
 
 
 
 
 
 Report 
No. 
98502 
 
 
11.2 
TABLE: summary of fault condition tests 
         
P 
         
 
Voltage (V) 0,9 or 1,1 times rated voltage  ......... :
253V or 198V  
— 
         
 
Ambient temperature (
o
C)  ................................... :
23 - 26
 o
C 
— 
Monitored point: 
Under fault conditions specified below 
dT (K) 
Limit dT (K)
*), D113 (AC to +), S-c;  
Input current stabilised at 1,19A.  
F604 opened. No hazard (Tested time: 30 min). 
N/A N/A 
*), D113 (AC to -), S-c;  
Input current stabilised at 1,18A.  
F603 opened. No hazard (Tested time: 20 min). 
N/A N/A 
**), D113 (AC to -), S-c;  
Input current stabilised at 1,09A.  
F603 opened. No hazard (Tested time: 1 hr). 
N/A N/A 
*), C115, S-c;  
Output signal off immediately.  Input current stabilised at 0,13A.  
F603 and F604 opened. No hazard (Tested time: 10 min). 
N/A N/A 
**), C115, S-c;  
Output signal off immediately.  Input current stabilised at 0,10A.  
F603 and F604 opened. No hazard (Tested time: 10 min). 
N/A N/A 
*), C116, S-c;  
Output signal off immediately.  Input current stabilised at 0,13A.  
F603 and F604 opened. No hazard (Tested time: 10 min). 
N/A N/A 
*), D114 (A to C), S-c;  
Input current stabilised at 1,26A. R951 opened.  
No hazard (Tested time: 1 hr 10 min). 
N/A N/A 
**), D114 (A to C), S-c;  
Input current stabilised at 1,16A. R951 opened.  
No hazard (Tested time: 30 min). 
N/A N/A 
*), D117 (A to C), S-c;  
Input current stabilised at 1,25A. R952 opened.  
No hazard (Tested time: 30 min). 
N/A N/A 
*), C121, S-c;  
Output signal off immediately. Input current stabilised at 0,28A.  
R951 and R952 damaged. No hazard (Tested time: 20 min). 
N/A N/A 
*), C122, S-c;  
Output signal off immediately. Input current stabilised at 0,28A.  
R951 and R952 damaged. No hazard (Tested time: 40 min). 
N/A N/A 
*) Tested voltage 253V               **) Tested voltage 198V 
F No = Fault Number, S-c = Short-circuit, Dis = Disconnection, O-I = Over Loaded 
 
 
- 
Page 37 of 43 -
 
 
 
 
 
 Report 
No. 
98502 
 
 
Monitored point: 
Under fault conditions specified below - continued 
dT (K) 
Limit dT (K)
***) 
*), Q319 (E to B), S-c;  
Unit shut down immediately. Input current stabilised at 0,009A.  
F603 and F604 opened. Q319 and Q321damage.  
No hazard (Tested time: 10 min). 
N/A N/A 
*), Q319 (E to C), S-c;  
Unit shut down immediately. Input current stabilised at 0,009A. 
F603 and F604 opened. Q321 damage. No hazard (Tested time: 10 min). 
N/A N/A 
*), Q321 (E to C), S-c;  
Unit shut down immediately. Input current stabilised at 0,009A. 
F603 and F604 opened. Q319 damage. No hazard (Tested time: 10 min). 
N/A N/A 
*), Q321 (E to B), S-c;  
Unit shut down immediately. Input current stabilised at 0,009A.  
F603 and F604 opened. Q319 and Q321damage.  
No hazard (Tested time: 10 min). 
N/A N/A 
*), Q315 (E to C), S-c;  
Unit shut down immediately. Input current stabilised at 0,009A. 
No component damaged. No hazard (Tested time: 10 min). 
N/A N/A 
*), C307, S-c;  
SPK1 left output signal off immediately. Input current stabilised at 0,81A. 
R351 opened. No hazard (Tested time: 30 min). 
N/A N/A 
*), C309, S-c;  
SPK1 left output signal off immediately. Input current stabilised at 0,73A. 
R353 opened. No hazard (Tested time: 10 min). 
N/A N/A 
*), D110 (A to C), S-c;  
Sub transformer thermal fuse opened after 15 min.  
Dielectric strength test O.K. No hazard (Tested time: 15 min). 
Sub transf. 
117,2 
Sub transf.
150 
*), C112, S-c;  
Sub transformer thermal fuse opened after 13 min.  
Dielectric strength test O.K. No hazard (Tested time: 13 min). 
Sub transf. 
109,1 
Sub transf.
150 
*), Speaker output (SPK1 left- ch.), S-c;  
Unit shut down immediately. Input current stabilised at 0,009A.  
No component damaged. No hazard. (Tested time: 10 min). 
N/A N/A 
*) Tested voltage 253V               **) Tested voltage 198V 
***) Temperature rise limits for Singapore is 10K less 
F No = Fault Number, S-c = Short-circuit, Dis = Disconnection, O-I = Over Loaded 
 
 
- 
Page 38 of 43 -
 
 
 
 
 
 Report 
No. 
98502 
 
 
Monitored point: 
Under fault conditions specified below - continued 
dT (K) 
Limit dT (K)
***) 
*), Ventilation opening (Blocked);  
Unit shut down after 23 min. 
The components are maximum temperature:  
1) Main transformer primary winding 
2) Main transformer core 
3) Sub transformer primary winding 
4) Sub transformer core 
5) PWB near Q319 
Input current stabilised at 0,009A. No component damaged. 
Dielectric strength test O.K. No hazard. (Tested time: 23 min) 
 
 
 
1) 69,0 
2) 57,7 
3) 47,7 
4) 45,5 
5) 70,5 
 
 
 
1) 150 
2) 150 
3) 150 
4) 150 
5) 110 
*), Pmax. Operating (Maximum non-clipped output signal);  
Main transformer primary winding maximum temperature 121K and  
thermal fuse opened after 12 min. Input current stabilised at 0,009A.  
Dielectric strength test O.K. No hazard (Tested time: 12 min). 
Main transf. 
121 
Main transf.
150 
 
 
 
*)  Tested voltage 253V               **)  Tested voltage 198V
 
***) Temperature rise limits for Singapore is 10K less 
F No = Fault Number, S-c = Short-circuit, Dis = Disconnection, O-I = Over Loaded
 
 
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