LG CMS9540F Service Manual page 58

2. WAVEFORM OF MOTOR DRIVE
SP+
6
7
SP-
Figure 2-1. SP- & SP+ for driving SPINDLE motor
(IC408 Pin17, 18)
LO-
10
MOT_OPEN
11 LO+(RED)
MOT_CLOSE
Figure 2-3. LO- & LO+ for driving Tray motor
(IC408 Pin9, 10)
8
9
00
3-37
SL+
SL-
Figure 2-2. SL- & SL+ for driving SPINDLE motor
(IC408 Pin11, 12)