Ir Blaster Troubleshooting - LG LRM-519 Service Manual

12. IR BLASTER TROUBLESHOOTING

IR Blaster Problem
YES
Setting IR Blaster
Configuration
YES
NO
R859 IR Signal
Present OK
YES
IR Blaster
Operation OK
NO
J804(2-pin) "FLD_
CLK" Present OK
YES
NO
J804(4-pin) "FLD_
RXD" Present OK
NO
J804(3-pin) "FLD_
TXD" Present OK
YES
Change
Front-Board
3-14
Check IC302 &
Re-soldering
YES