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Service Manual
Model No.:
9-3. Mainboard Failure Check
No picture but have sound
Check the power output
No
Change the Power Board
Yes
Check the CN2 (BLO)
Backlight on/off
Yes
No
There’s something wrong
with FRC
Verify if the DC/DC
convertor can output the
right Voltage,
No
Change the corresponding
DC/DC
QB3 output 5V
Yes
No
Verify if
QM1
output
Change
the QM1
Yes
Still having
problems
Change Panel
Change LVDS wire
39
48DR3505
Содержание 48DR3505
Страница 10: ...Service Manual Model No 2 2 External pictures four faces Front Side Up Side 9 48DR3505 ...
Страница 11: ...Service Manual Model No Right Side Back Side 10 48DR3505 ...
Страница 16: ...Service Manual Model No 4 4 LCD Panel Backlight Unit LVDS CONNECTOR CN1 Connector De nition 16 48DR3505 ...
Страница 17: ...Service Manual Model No 17 48DR3505 ...
Страница 30: ...Service Manual Model No 7 2 Wiring Connection Diagram 30 48DR3505 ...
Страница 36: ...Service Manual Model No 9 2 Mainboard IC Introduction Top view 36 1 2 3 4 5 6 7 8 48DR3505 ...
Страница 37: ...Service Manual Model No Bottom view 37 48DR3505 ...