Harman Kardon BDP 1/120 Service Manual page 30

harman/kardon
No VFD display
No VFD display
Check whether the voltage
+5Vstb on the front board is
normal work or not.
Check whether the voltage
between VFD F+&VFD F- is
DC 7V+0.5
Check
voltage 33 V is normal
Replace U4,U3
Go
Yes
Yes
whether the
Yes
No
Fix the connection power board
CN502 front board XP1
No
Check DC5V to AC 3V switch circuit
No
Check the d5 on the front board
30
BDP 1 / BDP 10 Service Manual
Trouble shooting chart