No display on LED, and buttons do not work
No
No
No
LED and
buttons do not work
Check whether there is
correct contact
between CON1 of front board
and J 6 of decoder board
Correct connection
Fix power supply board top
a power supply for should
electric circuit
Check the U2’s pin 33,34,40,41 arrive
the J 6 connect condition
Correct connection
Replace LED or Q1,Q2,Q3,Q4
Yes
Yes
Yes
Check DV33(+3.3V)
voltage on the power
and front board
Check whether there is 0V
or 3.3V on the signals of VPLAY,STB
CLK, DATA
Check whether the circuit
connected to LED & BUTTONS
is broken,
Trouble shooting chart
Yes
Yes
No
Check wether Q1,Q2,Q3,Q4 for 3904
&LED is broken,
5-9
Summary of Contents for DVP3320/94
Page 28: ...7 9 MAIN BOARD TOP ...
Page 29: ...7 10 MAIN BOARD BOTTOM ...
Page 30: ...LED PCB BOARD TOP 7 11 ...
Page 31: ...LED PCB BOARD BOTTOM 7 12 ...
Page 32: ...USB PCB BOARD TOP 7 13 ...
Page 33: ...USB PCB BOARD BOTTOM 7 14 ...
Page 34: ...POWER SW PCB BOARD TOP 7 15 ...
Page 35: ...POWER SW PCB BOARD BOTTOM 7 16 ...
Page 36: ...8 0 Mechanical Exploded View Diagram 8 1 ...
Page 39: ...9 0 REVISION LIST Version 1 0 Initial release ...