LG DP450G Service Manual

Sunday, October 05, 2008
C
T-
3.3V
5VA
CT1
FMSO
TRSO
STBY
V1P4
A
V1P4
IOA
SP-
LIMIT
OP+
SP-
OP-
SL+
SL-
SP-A
SP+
SL+
LDO1
V1P4
V20
IOA
VR_CD
SP+
TRSO
C
LDO2
OPO
LDO1
LDO2
A+5V
D
V20
LIMIT
STBY
DMSO
RFO
LCD_5V
E
FOSO
MDI1
LD_CD
A
DMSO
FOSO
F-
F+
T+
T-
D
A-5V
B
A+5V
E
GND
IOA
FMSO
F
OP-
B
STANDBY
OPO
SP- OP-
SP+
SP-A
OPO
CT1
MDI1
MDI1
VCC_5V
GND
LD_DVD
LCD_3.3V
STANDBY
A-5V
BAT_OUT
SL-
F+
F-
F
OP+
T+
RFO
VR_DVD
LCD_3.3V
S3.3V
S3.3V
S3.3V
VCC_5V
BAT_OUT
M5V
3.3V
BAT_OUT
M5V
BAT_OUT
BAT_OUT
S3.3V3.3V
BAT_OUT
M5V
M5V
VCC_5V
M5VVCC_5V
A+5V
LCD_5V
LCD_5V 7
LCD_3.3V 7
LDO1 2
V1P42
TRSO 2
C2
LDO2 2
OPO 2
D2
LIMIT 2
DMSO 2
RFO2
E2
FOSO 2
MDI12
A2
FMSO 2
F2
OP- 2
B2
3.3V 2,3,7,8
A+5V 2,5
BAT_OUT 5,6,7
IOA2
GND 2,3,5,6,7
STBY 2
STANDBY 6
V20 2
A-5V 5
OP+ 2
5VA 6,7
STANDBY
SERVO I/F
5V Power for Video Buffer & Motor Driver & OPU
3
2SB1132
1
C
2
EB
R456
10K
R456
10K
R404 680K/NCR404 680K/NC
R428 NCR428 NC
R427 0.1 1%R427 0.1 1%
R410 10KR410 10K
R408 33R408 33
R458 10KR458 10K
C437 105C437 105
C434
0.1uF
C434
0.1uF
R425
1R
R425
1R
R412
1/NC
R412
1/NC
J403
4x1 W/HOUSING
J403
4x1 W/HOUSING
1
2
3
4
R457
0
R457
0
C401
0.1uF
C401
0.1uF
B
C
E
Q409
2N3904
B
C
E
Q409
2N3904
1
3 2
U401
AM5898N
U401
AM5898N
EN2
1
GND
35
VCC1
10
VINSL+
12
COMP2
3
CT2
2
VOSP-
21
PVCC2
7
VOSL+
14
MGND
13
PGND1
26
PGND
25
GND
36
COMP1
30
MUTE
33
PVCC1
6
SW2
4
IPK2
5
BIAS
34
VOFC-
9
VINFC
11
VINTK
23
VCC2
24
VINSP
22
SW1
29
IPK1
28
CT1
31
EN1
32
VOFC+
8
PGND2
27
VOSL-
15
MGND
16
VOTK+
17
VOSP+
20
MGND
19
VOTK-
18
C409
0.1uF
C409
0.1uF
L411 FB(50)L411 FB(50)
G
S
D
Q418
2SK3018
G
S
D
Q418
2SK3018
1
2 3
R416 100R416 100
R430 0.11%R430 0.11%
C426
0.1uF
C426
0.1uF
R441 10kR441 10k
B
C
E
Q407
3906
B
C
E
Q407
3906
2 3
1
L403
50
L403
50
L415
50
L415
50
+
CE401
10uF/16V
+
CE401
10uF/16V
1 2
R418 3.6K 1%R418 3.6K 1%
R451
680K/NC
R451
680K/NC
R405
27K
R405
27K
+
CE416
100uF/10V
+
CE416
100uF/10V
12
L406
10uH
L406
10uH
R448 10KR448 10K
R450 1.2K 1%R450 1.2K 1%
+ CE411
100uF/25V
+ CE411
100uF/25V
12
C430 0.1uFC430 0.1uF
R460
5.1K
R460
5.1K
+
CE417
220uF/6.3v
+
CE417
220uF/6.3v
1 2
C416 68pFC416 68pF
R459 100KR459 100K
R411 1.2K 1%R411 1.2K 1%
+
CE410
220uF/16V
+
CE410
220uF/16V
12
L412
47UH(
L412
47UH(
C419
1000pF
C419
1000pF
C402
2200pF/NC
C402
2200pF/NC
R449
150K/NC
R449
150K/NC
R455
0
R455
0
C415
1000pF
C415
1000pF
L416
10uH
L416
10uH
R422
6.8K
R422
6.8K
R424 4.7R424 4.7
+
CE403
47uF/10V
+
CE403
47uF/10V
12
R406
150K/NC
R406
150K/NC
C414
0.1uF
C414
0.1uF
C436
NC
C436
NC
+
CE402
47uF/10V
+
CE402
47uF/10V
12
R413
680K
R413
680K
G
S
D
Q417
2SK3018
G
S
D
Q417
2SK3018
1
2 3
R421 4.7R421 4.7
C420
0.1uF
C420
0.1uF
D
S
G
Q410
AO3409
P-CHANNEL
D
S
G
Q410
AO3409
P-CHANNEL
1
32
L401 10uHL401 10uH
+
CE415
47uF/6.3v
+
CE415
47uF/6.3v
12
L405
50
L405
50
L410
FB(50)
L410
FB(50)
C413
NC
C413
NC
U402
TPS60400
U402
TPS60400
OUT
1
IN
2
CFLY-
3
GND
4
CFLY+
5
C435
0.1uF
C435
0.1uF
R431
750
R431
750
R461
47K/NC
R461
47K/NC
R407 2K 1%R407 2K 1%
Q411
2SB1132
Q411
2SB1132
1
23
C417 68pFC417 68pF
+
CE413
100uF/25V
+
CE413
100uF/25V
12
C428
0.1uF
C428
0.1uF
+
CE418
47uF/6.3v
+
CE418
47uF/6.3v
12
R426
51K
R426
51K
Q414
2SB1132
Q414
2SB1132
1
2 3
L407
FB(50)
L407
FB(50)
R433 0R433 0
L413
10uH
L413
10uH
C438
0.1uF
C438
0.1uF
R409
750
R409
750
R432 10KR432 10K
D402
SS14
D402
SS14
1 2
C418
0.1uF
C418
0.1uF
R401 10kR401 10k
R415 15R415 15
R454 100KR454 100K
+
CE412
220uF/16V
+
CE412
220uF/16V
12
R423 10KR423 10K
J402
2x1 W/HOUSING
CON2_2.0MM_DIP_B
J402
2x1 W/HOUSING
CON2_2.0MM_DIP_B
2 1
+
CE405
47uF/10V
+
CE405
47uF/10V
12
C431
NC
C431
NC
R434 0R434 0
D
S
G
Q408
AO3409
P-CHANNEL
D
S
G
Q408
AO3409
P-CHANNEL
1
3 2
L408
47uH
L408
47uH
C429
0.1uF
C429
0.1uF
R420 680KR420 680K
+
CE406
100uF/10V
+
CE406
100uF/10V
12
+ CE404
10uF/16V
+ CE404
10uF/16V
12
D403BAT54CD403BAT54C
3
2
1
C403
0.1uF
C403
0.1uF
J401
HEADER 24 SMD0.5 TOP
CON24_0.5MM
J401
HEADER 24 SMD0.5 TOP
CON24_0.5MM
10
9
8
7
6
5
4
3
2
1
11
13
12
15
14
16
20
19
18
17
24
23
22
21
25
26
C423 2200pF/NCC423 2200pF/NC
L409
47uH(470MR75-PF)
L409
47uH(470MR75-PF)
C427
0.1uF
C427
0.1uF
R452
OPEN
R452
OPEN
C421
0.1uF
C421
0.1uF
L402 10uHL402 10uH
R429 15R429 15
B
C
E
Q416
2N3904
B
C
E
Q416
2N3904
1
3 2
R440 0R440 0
C425
0.1uF
C425
0.1uF
L414
10uH
L414
10uH
C433
0.1uF
C433
0.1uF
D401
SS14
D401
SS14
1 2
OFF-PAGE CONNECTION
3. OPU & MOTOR CIRCUIT DIAGRAM
3-31 3-32

LG DP450G Specifications

General

Screen Size	7 inches
Resolution	480 x 234 pixels
Weight	1.1 lbs (0.5 kg)
Dimensions	7.6 x 5.9 x 1.2 inches (193 x 150 x 30 mm)
Built-in Speakers	Yes
Zoom Function	Yes
Parental Lock	Yes
Supported Formats	DVD, CD, MP3, JPEG
Playable Media Formats	DVD, CD, MP3, JPEG
Connectivity	AV output