LG DP170, Service Manual, Page: 36 / 52

3-28
MAIN BLOCK DIAGRAMS
1. OVERALL BLOCK DIAGRAM
DECK MECHANISM
STEP1+/-,STEP2+/-
FO+,FO-,TR+,TR-
V,HV+/-,W,HW+/-
U,HU+/-
DMSO,
F
G
FOSO,
TR
S
O
,F
M
S
O
B
,
ST
B
Y
,V
1
P
4
LD01,LD02,IOA,V20
MDI 1,SUBA,SUBB
A,B,C,D,RFIP,TNI,TPI
A[
0
0
:2
0
]
PC
E
#
PR
D#
PW
R
#
/M
_
R
ES
ET
AD[
0
:7
]
MA[
0
0
:1
1]
B
A
[0:
1
]
DC
L
K
DC
KE
D
Q
M
[0:
1]
CS
#
RA
S
#
CA
S
#
WE
#
D
Q
[0
0
:15]
SC
L
SDA
AC
L
K
AB
C
K
ASDA
T
0
VR
ST
#
A_
VI
DE
O_
IO
_
C
ON
A_
AU
DI
O_
C
D
_
C
ON
FR
ONT
A
_
S
P_
AMP_
E
N
MP
E
G
/
S
P
_
MU
T
E
SP_
L+
/-
,S
P
_R+
/-
HP
JAC
K
HP
JAC
K
MPE
G
HP
_
S
E
N
S
E
OP
T
I-
A
_
O
U
T
27M
H
z
SY
CV
B
S
SC
/A
_
M
U
T
E
POW
E
R
+1
5
V,
-1
4.5
V
,+
7
.5
V
,A
_
5
V
,LC
D
P
WR
TR
A
Y
_
O
P
E
N
_
S
W
T
R
A
Y
_
O
PE
N_
SW
2
LC
D
_
O
P
EN
P
OW
E
R
B
LOC
K
POW
E
R
JAC
K
DC
PW
R
DC
+9
.5
V
BA
T
7
.6
V
BA
T
_
S
E
N
S
E
DC
_
S
E
N
S
E
}
BA
T
T
ERY
/
FR
O
N
T
E+
5
V
S+
5
V
A+
5
V
A
-5V
P
W
R
C
T
L
_5V
PW
R
C
T
L
_
3
.3
V
D
+
3.
3V
A+
3
.3
V
D
+
1.
8V
MP
E
G
FR
O
N
T
+1
5
V
-14.
5V
+7
.5
V
CVB
S
J
ACK
B
A
TERY
BLOC
K
BA
T
7
.6
V
S
P_A
M
P
_E
N
MU
T
E
_F
M
BF
1
_
FM
_
C
S
VI
DE
O_
IO
_
C
ON
AU
DI
O_
C
D
_
C
ON
VFD_
T
XD
VFD_
SC
K
}
MP
E
G
FM_
M
U
T
E
FM_
C
S
F
M
_S
CK
FM_
T
XD
}
FM
A_
V
ID
E
O
_
IO
_
C
O
N
A_
AU
DI
O_
C
K
_
C
ON
A_
SP_
AMP_
E
N
}
AUDIO
AV
F
D
_
T
X
K
A
V
F
D
_S
CK
AV
F
D
_C
S
27M
H
z
5M
H
z
B
A
T
_
SE
NCE
,DC_
SE
NCE
DC
+9
.5
V
FR
O
N
T
BLOC
K
DISCI
F
R
O
N
T
{
#
SPI
N
D
L
E
MO
TO
R
ST
E
P
PI
N
G
MO
T
O
R
M
PI
C
K
UP
M
U
201
B
A
5954
U2
0
2
B
A
5954
U5
0
0
MT1
3
89
MPE
G/D
S
P
/RF
U501
26V160T
E
-70
U502
M
1
2264164A-
7T
U503
S
24C021CS
U301 CS
4391
U302
NJM
4580M
U303
NJU4052B
V
U304
NJM
4
580M
U306
TP
A
6
0
11
C
391,
C
392
,
C
393,
C
394
47U
/6
.3
V
U2
TER
A
W
IN
S
T
1
00
LC
D
BL
OCK
Q
1
07
S
I4435D
Y
U
1
01
M
P
1410
U
102
M
P
1410
U
105
B
A
9701
U
104
B
D
6
111
F
V
U5
A
A
T
1102
PW
M
P
O
WE
R
DC+9.
5
V
U7
02
GT
6
3
1 2
(C
L
V
2
.0
)
U7
0
1
S
I4435
U7
0
3
SI
4
4
3
5
S
-8232A
LF
T
SA
M
_
I,
SA
M
_
U
U6
0
3
74V
H
C
T
541
U
6
01
LE
D
R
C
601
T
S
O
P
6238
KE
Y_
M
Q
602
2N
3904