LG LH-T3520X Service Manual page 24

3. TRAY OPEN/CLOSE SIGNAL
1) Tray open/close waveform
3) Tray open waveform
1
2
3
4
FIG 3-1
1
2
3
4
FIG 3-3
2) Tray close waveform
1
2
3
4
2-15
1
2
3
4
FIG 3-2