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LG DP9821P Service Manual page 44

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5. VIDEO CIRCUIT DIAGRAM
R401
R421
0
0
A+5V
L405
10UH
L406
OPEN
U401
FSAV330
GT414
C414
10U/10V
GT401
2.7uH
L401
3
4
C402
C401
D401
CON401
2
nc
2
33p
VIDEO IN/OUT
STZ6.8N
6
KEY_LCD
GT432
6
WAKEUP
GT424
6
NAVIGATION
GT431
6
KEY_M
GT425
1,3
PWRCTL_LCD
A+3.3V
R410 open
CON404
CON10
1,2,3,4
A+3.3V
E+5V
PWRCTL_LCD
R409
C427
R426
1,8
DCPWR
104
4.7K
1
LCD_3.3V
A
B
C
D
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C409
0.1U
TP417
R403
TP416
560
TFT_5V
R423
39k
C418
R422
Q401
1
75
3904
22uF/16V
R420
39k
R424
R402
open
300
D404
D405
UDZS16B
UDZS16B
L409
10uH
DCPWR
CON403
C417
+ C416
1
2
0.1uF
220uF/16V
3
L410
FB/1206
CON3
GT428
STZ6.8N
2
D406
2
100
LCD_3.3V
C115
47uF/10V
E
F
G
H
Q415
OPEN
Q418
OPEN
GT407
R407
C403
open
100P
TP425
GT413
GT416
B403
L408
BEAD
10UH
B401
B402
BEAD
BEAD
GT410
L407
10UH
+
GT417
GT402
GT411
GT421
CON402
CON_20-A
I
J
K
L
3-39
3-40
VIDEO_IO_CON3,6
/V_JACK_IN 3
R416
OPEN
1
Q409
OPEN
R408
OPEN
A+3.3V
1
Q408
OPEN
R412
OPEN
1
Q404
R419
OPEN
KTA1504S
R406
TP439
OPEN
1
/V_MUTE 3
R418
R414
OPEN
OPEN
1
C410
OPEN
CVBS
CVBS
3
L402
2.2uH
C404
R405
75
100P
C411
OPEN
VIDEO_Y
VIDEO_Y 3
2.2uH
L403
R415
C406
open
100P
R404
75
C412
OPEN
VIDEO_C
VIDEO_C 3
L404
2.2uH
R413
C407
C408
75
100P
100P
A+5V
1,2,3,4,6
MCU_SCL 6
MCU_SDA 6
REST
6
GT405
KEY_LCD 6
STZ6.8N
2
D212
GND
1,2,3,4,6,7,8
2
GT412
SP_L-
4
SP_L+
4
SP_R-
4
SP_R+
4
M
N
O
P
Q
R
S
T

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