LG LH-W750TA Service Manual page 36

5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION)
6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION)
FIG 5-1
FIG 6-1
3-13
FOSO(1.5V/1.4V/1.3V)
(IC501 PIN 12)
F+(4.0V/3.6V/3.2V)
(IC404 PIN 14)
F-(4.0V/3.6V/3.2V)
(IC404 PIN 13)
MDI1(0V/180mV)
(IC401 PIN 26)
LD01(5.0V//3.5V)
IC401 PIN 20)
LD02(5.0V/3.6V)
(IC401 PIN 21)