21
5. Repair Flow Chart
No Picture (LED Orange)
Check I
2
C bus
Check I
2
C communication
NG
OK
Change key board/IR board
Check U400
Change U400
Check key board/IR board
No picture
OK
NG
OK
NG
Check 24V power supply
OK
Check the power supply circuit
NG
Check main board Standby power supply
Change U705
OK
NG
Summary of Contents for L42A9
Page 4: ...4 1 General Specification ...
Page 19: ...19 4 Remove the AC socket ass y speakers and BKT ...
Page 20: ...20 5 Remove the rest BKT and separate panel and bezel ...
Page 25: ...25 6 PCB Layout 6 1 Main Board 715G3639M01000004K ...
Page 26: ...26 ...
Page 27: ...27 6 2 Power Board 715G3351P01W20003S ...
Page 28: ...28 ...
Page 29: ...29 ...
Page 30: ...30 6 3 Inverter Board 715G3358 1 ...
Page 31: ...31 6 4 IO Board 715G3481 1 ...
Page 32: ...32 6 5 Key Board 715G3513K01000001S 6 6 IR Board 715G3666R01000004F ...
Page 58: ...58 11 Exploded View ...