Harman Kardon BDS 235 Service Manual ▷ View online
5-3 Trouble shooting Chart
Remote control does not work
Remote control
does not work
Go
Check whether the remote
controller’s battery is
exhausted or not.
No
Replace the battery for remote
controller
Check the 30pin FFC cable
from FV board to Main
board is connect well
Yes
Reconnect the cable
No
Yes
Replace IR3
Check the IR3 power
supply is OK, IR3 pin3 is
about 3.3V
Check the +3.3V net on FV board
No
Yes
5-4 Trouble shooting Chart
Can’t read disc or can’t eject
Yes
Check the connection 5pin cable from the
BD board
Can’t read disc or can’t
eject
Check 45pin and 5pin/9pin
cable from Main board
connection to the loader is
normal
cable from Main board
connection to the loader is
normal
Replace the Main board
NO
GO
Check whether the
DVD loader running is
normal
Fix the connection the 45pin cable
and 5pin/9pin cable
NO
Yes
5-5 Trouble shooting Chart
5.1/2.1 channel no audio output
Reconnect well
Yes
No
Go
Check the 6pin/12pin cable is
connect well from Main board to
AV board
5.1/2.1 channel no audio
output
Replace the Main board
Check +34V at XP607 on
Main board is OK
Yes
Refer to Power supply board
Check XP27, XP30 is
short to GND
No
Replace the Main board
Yes
No
5-6 Trouble shooting Chart
BD/DVD/CD no audio output
BD/DVD/CD no audio
output
output
Go
Check the audio of
COAXIAL mode is OK
COAXIAL mode is OK
Yes
No
Next acting as the problem
5.1/2.1
channel no audio output
Check HDMI audio is ok
Yes
Replace the Main Board
No
Replace the Main Board
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