20” LCD TV
AOC L20W451T
23
6.2 Can not start (LED indicator yellow)
NG
Repair the keyboard
OK
Check 5V_SB
NG
Return to “6.1”
Check 3.3V_SB
Replace U703 or F702
OK
NG
Check PWR_ON signal
OK
NG
Check Q703, Q708, Q704
NG
Replace Q703 or Q708 or Q704
Check U402, U403
NG
Replace U402 or U403
Check I
2
C communication
OK
Check Q940 (VCC3)
NG
Replace Q940
OK
Check main board power supply
Check keyboard
NG
Replace panel
Check Panel inverter board
Summary of Contents for L20W451T
Page 5: ...20 LCD TV AOC L20W451T 5 2 Operating Instructions 2 1 The Use Of Remote Control ...
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Page 7: ...20 LCD TV AOC L20W451T 7 2 2 To Use The Menus ...
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Page 18: ...20 LCD TV AOC L20W451T 18 Fig 5 Fig 6 Fig 7 ...
Page 32: ...20 LCD TV AOC L20W451T 32 8 PCB Layout 8 1 Main Board 715T1539 2 2 ...
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Page 35: ...20 LCD TV AOC L20W451T 35 8 2 Power Board 715T1599 4 ...
Page 36: ...20 LCD TV AOC L20W451T 36 ...
Page 37: ...20 LCD TV AOC L20W451T 37 8 3 Tuner Board 715T1529 1 2 ...
Page 38: ...20 LCD TV AOC L20W451T 38 ...
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Page 40: ...20 LCD TV AOC L20W451T 40 8 4 IR Board 715T1453 1 I 8 5 Key Board 715T1816 2 ...
Page 41: ...20 LCD TV AOC L20W451T 41 8 6 Headphone Board 715T1290 1 5 ...