24
5. Repair Flow Chart
1. No Power (No LED Indicator)
2. Can not Start (LED Indicator Yellow)
NG
Repair key board or remote control
OK
Check U151, U153, U154, U157, U158
NG
Replace U151, U153, U154, U157, U158
Check U401
NG
Replace U401
OK
OK
Check key board or remote control
Check I
2
C communication
Can not start
OK
Check U400
NG
Replace U400
OK
NG
Check power cord and board interface
Plug in power cord and interface
OK
Check F901, BD901, C905
NG
Replace F901 or BD901 or C905
OK
Check D901, D902
Check D904, C930, C915
NG
Replace D901 or D902
OK
Check T901
OK
Replace T901
Replace D904 or C930 or C915
NG
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 ...