Motor Drive Circuit Diagram - LG DP471B Service Manual

5. MOTOR DRIVE CIRCUIT DIAGRAM

RAD+
RAD-
SLED-
SLED+
+5V_M
SCO
TCO
+5V_M
VREF2
DMEA
C174 C336 C180 C29 TC12
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
U4
RAD+
15
VOTK+
RAD-
16
VOTK-
SLED-
17
VOLD+
SLED+
18
VOLD-
19
VCC2
R18 0/J/0402
20
NC
R23 NC
21
VCTL
C24 0.1U/25V/0402
G2
G2
22
GND
SCO
23
VINLD
24
NC
TR_B3
25
TRB2
TCO
26
VINTK
VREF2
27
BIAS
DMEA
28
MUTE
AM5888S
CD5888CB
C55 R32 R44
NC
GNDM
3-29
FOC+
FOC-
FOC+
14
VOFC+
FOC-
13
VOFC-
R187
12
VOSL-
SP-
11
SP-
VOSL+
LOAD+
10 1
TP5
VOTR+
LOAD-
9 1
TP6
VOTR-
8
VCC
C33 0.1U/25V/0402
G1
GNDM
G1
7
REV
6
FWD
REGO1
5
REGO1
SPDCO
4
SPDCO
VINSL+
REGO2
3
REGO2
TR_B1
2
TRB1
FCO
1
FCO
VINFC
3-30
XOPVIN
XOPVIN
XOPVIP
XOPVIP
1/F/0603 SP+
SP+
+5V_M
R33
R35 R31 R28
NC
LGE Internal Use Only
R25