LG 42PT250B Service Manual page 16

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
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+3.3V
R353
10K
READY R382 @compC
0
C
READY
R326
10K 19
B
Q305
AMP_MUTE EAPD/OUT4B
READY 2SC3875S(ALY)
READY
E 20
R383
TWARN/OUT4A
0
C314
21
0.1uF
VDD_DIG_1
50V
22
GND_DIG_1
AC_DET
23
R384
22 PWRDN
R323
2.2 24
VDD_PLL
R355
2K 25
C317
C308 FILTER_PLL
680pF
0.1uF
C310 50V
16V
4700pF
26
R324 50V
GND_PLL
Close-by
0
AUD_MASTER_CLK Close-by
C309
27
READY 22pF R385
22 XTI
50V
AUD_SCK
C312
28
READY 22pF R386
22 BICKI
50V
AUD_LRCK
C313
29
R387
READY 22pF 22 LRCKI
50V
AUD_LRCH
C315
30
READY 22pF R388
22 SDI
50V Close-by
AMP_RESET_N
31
R389
22 RESET
32
R320 2K
R390
INT_LINE
22
AMP_DEMOD_SDA
33
R391
R321 2K SDA
22
AMP_DEMOD_SCL
34
SCL
R381 35
10K GND_DIG_2
Close-by
36
C311 C316
VDD_DIG_2
0.1uF
0.1uF
50V
50V
[EP]GND
STA368BWG
IC300
LVDS
18
OUT3A/FFX3A
17
OUT3B/FFX3B
16
CONFIG
C319
15
0.1uF
VDD
50V
14
GND_REG
13 L300
R1300
10.0uH
OUT1A
20
12
C333
GND1
C320 1uF 25V 0.22uF
C326 50V
11 C321 0.1uF 50V 330pF
L301
VCC1
50V
10.0uH
10
OUT1B
9 L302
C327
OUT2A 10.0uH
C322 1uF 25V
330pF
50V
8 C323 0.1uF 50V C334
VCC2 0.22uF
50V
R1301
7
20 L303
GND2
10.0uH
6 P_17V
C324
C325
OUT2B
0.1uF
68uF
50V
35V
C318
5
0.1uF
VCC_REG
50V
4
VSS
3
TEST_MODE
2
SA
1
GND_SUB
IR
+3.3V_ST
C331
10pF
R394 R396 R1302
R397
10K 10K 10K
10K
KEY1
KEY2
C
LED_RED R379
4.7K B Q306 +3.3V_ST
2SC3052
R392 R393
4.7K R398
4.7K
E
22
SUB_SCL
R399
22
SUB_SDA
+3.3V_ST
C330
0.1uF
16V
TOUCH_VER_CHK
GP4 LM1
Main/Power/GPIO
Audio AMP
C335 C339
0.22uF 1000pF
50V 50V
C336 C340 4
0.22uF 1000pF
50V 50V
3
2
C337 C341
0.22uF 1000pF
1
50V 50V
C338 C342
0.22uF 1000pF
50V 50V
Key/IR
P301
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
20110531
2 7
LGE Internal Use Only