Service Manual
Model No.:
No sound No picture
No
Verify if the Power has
5Vstb output
Yes
Change the
Power supply
Verify if CN4 Pin3/4 has 5V
input
Yes
Verify if CN2 Pin1 has 12V
input
Yes
Verify if DC/DC convertors have
the right output
Yes
No
No
No
Change Power board
Change Power board
Change corresponding
DC/DC convertor
Still having
Change
Change the software
41
Problems
Mainboard
40DR3505
Summary of Contents for 40DR3505
Page 10: ...Service Manual Model No 2 2 External pictures four faces Front Side Up Side 9 40DR3505 ...
Page 11: ...Service Manual Model No Right Side Back Side 10 40DR3505 ...
Page 16: ...Service Manual Model No 15 40DR3505 ...
Page 17: ...Service Manual Model No 4 3 LCD Panel Backlight Unit LVDS CONNECTOR CNF1 16 40DR3505 40DR3505 ...
Page 18: ...Service Manual Model No 17 40DR3505 ...
Page 31: ...Service Manual Model No 7 2 Wiring Connection Diagram 30 40DR3505 ...
Page 37: ...Service Manual Model No 9 2 Mainboard IC Introduction Top view 36 1 2 3 4 5 6 7 8 40DR3505 ...
Page 38: ...Service Manual Model No Bottom view 37 40DR3505 ...