25
3. No Display (LED Indicator Green)
Check 12V
power supply
Check Panel
NG
Replace Panel
Check back light is OK
OK
Check LVDS cable
and connector
OK
Check U401
NG
Replace U401
OK
Check U400
NG
Replace U400
NG
NG
OK
Check BL-ON/OFF signal
Check PS
signal
OK
OK
Check power
board
NG
NG
NG
Check Q151
Replace Q151
Summary of Contents for L19WA91
Page 4: ...4 1 General Specification ...
Page 5: ...5 2 Operating Instructions 2 1 The Use of Remote Control ...
Page 13: ...13 2 3 How to Connect ...
Page 14: ...14 ...
Page 15: ...15 2 4 Front Panel Control Knobs ...
Page 20: ...20 3 Release connectors L19WA91 L22WA91 ...
Page 21: ...21 4 Remove hinge BKT L19WA91 L22WA91 ...
Page 22: ...22 5 Remove the screws to remove the main board and power board 6 Remove speakers ...
Page 23: ...23 7 Remove panel 8 Remove key board and IR board ...
Page 29: ...29 6 PCB Layout 6 1 Main Board 715G3292 1 ...
Page 30: ...30 ...
Page 31: ...31 6 2 Power Board 715G3414 1 ...
Page 32: ...32 6 3 Key Board 715G3375 1 ...
Page 33: ...33 6 4 IR Board 715G3392 1 ...
Page 35: ...35 8 Block Diagram ...
Page 54: ...54 10 Exploded View L19WA91 ...
Page 55: ...55 L22WA91 ...