No display on LED, and buttons do not work
No
No
Yes
Yes
No display on LED, and
buttons do not work
Check every supply
voltage on PSU, main
board and LED board
Fix the open circuit or short circuit
which may exist on PCBs and
cables
Fix XS1
Fix the PCB or bad component
Replace the LED driver IC, LED, or the
whole LED board
Go
Yes
No
Check whether every pin
of XS1 on KEY board
connects well to main
board
1. Check whether any bad
component or soldering exists on
LED board,
2. Check whether the circuit
connected to the keys is broken.
Trouble shooting chart
4-1
Summary of Contents for BDP3380/05
Page 30: ...Front Board Print Lay out Top Side 6 12 6 12 Front Board Print Lay out Bottom Side ...
Page 31: ...6 13 6 13 Power Board Print Lay out Bottom Side ...
Page 32: ...6 14 6 14 Main Board Print Lay out Top Side ...
Page 33: ...6 15 6 15 Main Board Print Lay out Bottom Side ...
Page 34: ...Exploded View for BDP3380 05 12 93 96 78 94 7 1 ...
