DOWNLOAD Harman Kardon BDT 20 - BDT 2 Service Manual ↓ Size: 4.25 MB | Pages: 39 in PDF or view online for FREE

Model
BDT 20 - BDT 2
Pages
39
Size
4.25 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
bdt-20-bdt-2.pdf
Date
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Harman Kardon BDT 20 - BDT 2 Service Manual ▷ View online

 
 
 
No display on VFD, and buttons do not work 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
                                                                                               
 
 
 
 
 
 
 
                                                                                     
 
 
 
 
 
 
 
 
 
     
 
 
 
 
 
 
 
 
 
 
No 
No 
No 
Yes 
Yes 
No disp lay  on VF D, and  
buttons do not work 
Check ever y suppl y 
voltage on main board is 
normal 
Refer to Power supply board part
 
 
 
Check the U721’s pin 61,60,59singal 
 
Correct connection   
Replace  U721   
Yes 
Yes 
Yes 
No 
Check38V,5V,+12V 
voltage  on th e po wer 
and front board 
Check th e front bo ard 
signal VDIN,VCLK,
 
VSTB， 
1.Check whether bad solder exists 
on U721 and pins of VFD,   
2.Check w hether  the  circuit 
connected to  K7, K2, K3, K4, K5,  
K6 is broken. 
 
 
 
 
 
Fix the c onnection  XS603 on  front 
board  and ZD602  
 
Trouble shooting chart
5-1 
harman/kardon
BDT 2 / BDT 20 Service Manual
Page 9 of 37
 
 
 
Remote control does not work 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
                                                             
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
                                                   
 
 
 
 
 
 
Go 
Yes 
No 
yes 
Remote c ontrol 
does not work 
NO 
Replace th e batter y for  remote  
controller  
Check whether the remote 
controller’s batter
y is
 
exhausted   or not.
 
Check the IR1 power 
supply+3.3V_STBIR  
 
Check the +3.3 V net no front board
 
Replace IR1
 
Yes 
Trouble shooting chart
5-2
harman/kardon
BDT 2 / BDT 20 Service Manual
Page 10 of 37
 
 
 
Can’t read disc or can’t open the disk door
 
 
 
 
 
 
                                                         
 
 
 
 
 
 
 
 
 
 
 
 
 
       
 
 
 
 
 
 
 
 
 
 
     
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Yes 
Check the c onnection of the  4PIN cabl e h e 
Power Board. 
 
Can’t rea d disc or can’t 
open the disk door 
 
Check SA TA cable from 
main bo ard conn ection to 
the loader is normal   
Replace the loader
 
NO 
GO 
 
Check w hether  the 
DVD loa der ru nning is  
normal
 
Fix the connection the And SATA cable from 
main board 
 
NO 
Yes 
Trouble shooting chart
5-3
harman/kardon
BDT 2 / BDT 20 Service Manual
Page 11 of 37
 
 
 
No VFD display   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
                                                           
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
                                                 
 
 
 
 
 
 
Check  whether the volt age 
between VF D F+ &VFD  F- is 
DC 4V+/-0.4
 
 
Go 
No 
No 
No VFD display 
Yes 
Fix the conn ection power board 
CN502 front board XS603
Check  whether the volt age 
5V,12V on th e front bo ard is  
normal work or not.
Check DC12V to AC 4V switch circuit 
Replace U
602
Yes 
Check w
hether 
the 
voltage    38 V is normal
 
 
No 
Check the ZD602 on the front board 
 
Trouble shooting chart
5-4
harman/kardon
BDT 2 / BDT 20 Service Manual
Page 12 of 37
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