LG 32LX330C Service Manual page 25

11. IR OUT
Check IR (P4600) 7Pin and R4610
OK
Check the R3504
OK
Check the R3502
OK
Check Pin4 of RS232C(P3200)
OK
Check PM_TXD line
R3206, R3201
OK
Check PM_RXD line
R3205, R3201
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Only for training and service purposes
NO
NO
Replace Q3501, R3503, R3502
NO
NO
If there is no problem without RS232C connection with external
check the PU/PD resistor value of the external box in H/W side.
NO
NO
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Replace IR and Cable
Replace Q3500, R3501
box,
Replace IC3200
Replace IC3200
LGE Internal Use Only