LG GSA-4167B Service Manual page 68

Input/Output circuit diagram
SPIN, SL1IN, SL2IN
LOIN
5VCC
100
SPGS
(Temperature monitor)
5VCC
100
25k
VM1, U, V, W
VM1
U U V
5VCC, FO+, FO-, TO+, TO-, TL+, TL-
FO+ FO-
72
FOIN, TOIN,TLIN
TEST
5VCC
100
ACTFLG,FG
5VCC
5VCC
W
5VCC
TO+ TO- TL+
REF
5VCC
100
ACTRST
5VCC
5VCC
10k
100
VM2, SL1+, SL1-, SL2+, SL2-
SL1+ SL1- SL2+
VM3, LO+, LO-
TL-
EN1, EN2
5VCC
100
COMMON
VM1
100
COMMON
VM2
SL2-
VM3
LO+ LO-
17k
35k