Spindle Control Waveform; Focus On Waveform - LG DP132 Service Manual

5. SPINDLE CONTROL WAVEFORM

19
20
21

6. FOCUS ON WAVEFORM

22
23
24
FIG 6-1 (CD)
22
23
24
FIG 6-2 (DVD)
19
TRAY+
R12 R12 0 0
TRAY- R21 R21 0 0
20
/Y5V /Y5V
SP_MOT+ R65 R65
XOPVIP1
XOPVIN1
21
FIG 5-1
22
U4 U4
1
FOCUS_S
VINFC
TR_B1 2
TR_B1
REGO2 3
REGO2
4
SPDL_S
VINSL
REGO1 5
REGO1
SL- 6
FWD
SL+ 7
REV
29
GND
8
GND
VCC1
LOAD- 9
VOTR-
10
VOTR+
SP_MOT- 11
VOSL+
1 1 12
VOSL-
13
FACT-
VOFC-
FACT+ 14
VOFC+
AM5890S AM5890S
23 24
3-22
TP50 TP50
U4 U4
FOCUS_S 1 28
VINFC MUTE
TR_B1 2 27
TR_B1 BIAS
3 26
REGO2 TRACK_S
REGO2 VINTK
SPDL_S 4 25
VINSL TR_B2
RESET
REGO1 5 24
REGO1 RESET
SL- 6 23 SLED_S
FWD VINLD
SL+ 7 22
REV GND
29 30
GND GND
GND 8 21
VCC1 VCTL
9 20
LOAD-
VOTR- VCCD
10 19
VOTR+ VCC2
SP_MOT- 11 18 SL_MOT+
VOSL+ VOLD-
12 17
1 1 SL_MOT-
VOSL- VOLD+
FACT- 13 16 TACT-
VOFC- VOTK-
FACT+ 14 15 TACT+
VOFC+ VOTK+
AM5890S AM5890S
TP50 TP50
28
DRVSB DRVSB
MUTE
27 VREF2
BIAS
26 TRACK_S
VINTK
25
TR_B2
TR_B2
24 RESET
RESET
23 SLED_S
VINLD
22
GND
30
GND
21
GND C4 0.1uF/25V/Y5V C4 0.1uF/25V/Y5V
VCTL
20
VCCD
19
VCC2
18 SL_MOT+ R22 R22 0 0
VOLD-
17 SL_MOT- R23 R23 0 0
VOLD+
16
TACT-
VOTK-
15 TACT+
VOTK+
DRVSB DRVSB
VREF2
TR_B2
GND
GND
SL-
SL+