
19
5. Trouble Shooting Flow Chart
STEP 1.
NO NO
YES
YES
YES
YES
NO
NO
NO
YES
YES
NO
YES
OK NG NO YES
No Display
( Black )
LED ON
?
Push the power
ON/OFF
switch
LED Color
change ?
Check IR/LED
board J1,U1,D1
Check Keypad
Board J1
pin1,pin2.
LCD TV
ON?
Check
Video&
Audio
Function
Make sure the
LVDS
connection of
LCD Panel is
fine
CN3 Pin7
Active High?
Check the D-SUB
37Pin board CN3-
Pin7
Check Inverter
Power (24V)of
LCD Panel, OK?
B
Display ?
Check
Video&
Audio
Function
A
Change AD
Board BOX
Check AC
Socket ?
Change AC
Socket Fuse
C
Содержание LT3709S
Страница 2: ...1 Service Manual LT3709S ...
Страница 11: ...10 3 Front Panel Function Control Description Operation Adjust and Programming ...
Страница 12: ...11 ...
Страница 13: ...12 ...
Страница 14: ...13 ...
Страница 23: ...22 6 Exploded Diagram and Spare Parts List JL321 ...
Страница 24: ...23 JL371 ...
Страница 25: ...24 JL401 ...
Страница 26: ...25 7 Block and Schematic Diagrams ...
Страница 45: ...44 8 PCB Layout Diagram Main Board Component Side Top ...
Страница 46: ...45 Main Board Component Side Bottom IO Board L1 component side ...
Страница 48: ...47 IR LED Board Component Side Bottom AUX AV Board Component Side Top ...
Страница 49: ...48 AUX AV Board Component Side Bottom D SUB 37 Pin Board Component Side Top ...
Страница 50: ...49 D SUB 37 Pin Board Component Side Bottom ...