LG 37LH250H Service Manual page 34

PTC
5VST
011:M8
011:M8
011:M9
011:M9
IC1203
011:M10
FM24C16A
NC_1 VDD
C2150
1 8
0.1uF
50V
NC_2 WP
2 7
NC_3 SCL
3 6
VSS SDA
4 5
008:Z22;008:AR32;008:AR31;008:BC11;003:P6
MSTAR_POWER_ON
009:AD27
009:AE28
009:I12;014:S13
009:I12;014:Y13
C2151 C2152
10uF
0.1uF
16V
50V
8
SHIELD_PLATE
6B T_TERMINAL2 R2265
0
7B
B_TERMINAL2 330
R2270
5 R2266
T_SPRING
0
4
R_SPRING
7A
B_TERMINAL1
Q1107
2SC3875S(ALY)
6A
T_TERMINAL1
3
E_SPRING
PEJ024-01
JK1206
5VST
L1220
MLB-201209-0120P-N2
+12V 12V_DCDC
SMD Type
R2269
0
+12V_C
009:AJ28;014:S6
0 R2555
BUFFERED_MPI_DIN
NON_bLAN
009:AO27;014:Y7
0 R2554
MPI_DOUT
P1201
NON_bLAN
009:AJ27;014:Y14 C2153
SMW200-11 10uF
0 R2552
16V
SPI_DATA_OUT
NON_bLAN
009:N26;014:S13
12V
1 +12V_C 0 R2553
009:N25;014:Y13 SPI_DATA_IN
NON_bLAN
GND 0 R2551
SPI_CLOCK
2
NON_bLAN 014:S6
R2252 R2262
BUFFERED_MPI 0 0
3 DUM_BUFFERED_MPI_DIN
1/10W
R2259 R2263
5% 014:R7
MPI_DOUT 0 0
4
DUM_MPI_DOUT
1/10W
R2253 R2260
5% 014:S14
SPI_DATA_OUT 0 0
5
DUM_SPI_DATA_OUT
1/10W
R2258 R2264
5% 014:S12
SPI_DATA_IN 0 0
6 DUM_SPI_DATA_IN
1/10W
R2254 R2261
SPI_CLOCK 5% 014:Y12
0 0
7 DUM_SPI_CLOCK
1/10W
5%
GND
8
R2255
VCC
0
9
1/10W
R2257
5% 009:M8
IR_IN_MODEM 0
10 IR_IN_MODEM
IR_IN_MODEM
1/10W
5%
GAME CONT
11
to b_LAN IR input
b_IR_IN_MODEM
GND
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.
PTC UPDATE
SW900
SKHMPWE010 R2324
330
1 2
5VST UART_SWA
012:AA5
3 4
R2291
5 012:O6
2.2K UART_SWB
R2300
4.7K
SAM2333
A1[RD]
R2323
LD904 C
330
A2[GN]
RJP
SAM2333
5VST
A1[RD]
R2322
LD903 C
330
A2[GN]
R2301 0
011:N25 LED_AM
011:N25 LED_GR
R2302
0
R2314 100
R2286 100
RJP_CTRL4
R2287 100 C2158
RJP_CTRL3 0.22uF
R2288 100 25V
RJP_CTRL2
R2289 100
RJP_CTRL1
R2290 100
RJP_CTRL0
PM3
R2306 1
0 RXD2/PM4
012:J8;012:Z7 PTC_DEBUG_RX 2
TXD2/PM5
012:D9;012:Q8 PTC_DEBUG_TX 3
R2303 0 SDA/PM6
4
SCL/PM7 5
R2297
0 FAULT0/PQ0
6
R2284 VCC1
VCC1 R2312 0 FAULT1/PQ1
0 7
R2309 0 FAULT2/PQ2
8
001:O26 SIDEAV_SW MC9S12E128CFUE
OPT R2310 0 FAULT3/PQ3
9
POWER_DET
R2296 0 VDDX
R2285 10
10K 1uF 0.1uF
VSSX 11
10V 50V
C2156
OPT C2155 R2313 0 IS0/PQ4 12
RELAY_PTC IS1/PQ5
13
R2293 004:E15;004:P27
004:AG4 0 R2280 IS2/PQ6
0 14
SCK MODC/TAGHI/BKGD
R2278 15
0 IOC04/PT0
R2308 16
MISO
0 IOC05/PT1
R2282 17
100
R2307 IOC06/PT2 18
SPI_DATA_IN 0
IOC07/PT3
19
IOC14/PT4
R2294 20
100 R2311 0
SPI_CLOCK
009:AS17
DCDC_EN
100
R2331
5VST
22 VCC1
R2295
2SA1530A-T112-1R
Q1108
E
R2274
4.7K
B
C
VCC1
P1202
GIL-G-06-S3T2
C
B
1
4.7K
R2273
E
2
3
R2315
009:Q27;009:S28;009:S28;009:T20;009:W23;009:AD31
0
4
VCC1
5VST
5
6
5VST
C2154
0.1uF
50V
C
Q1109 B
2SC3875S(ALY)
E
5VST
R2277
100
009:H8
C
Q1110 B
C
2SC3875S(ALY)
4.7K
R2317 Q1111
E
2SC3875S(ALY)
E
R2527
100
014:N19;014:Y23
C
Q1403 B
2SC3875S(ALY)
E
Switch port for b_LAN or MPI Card Communication lines
R2335
330
bLAN_CTRL_PTC_1
R2332
330
bLAN_CTRL_PTC_0
R2325
330 R2333
330
bLAN_POWER_MANAGE
5VST
R2342
4.7K
R2338
330
R2343
1.2K
VCC1
OPT
P1203
GIL-G-02P
C2167
C2168 5VST
0.1uF
1uF
50V 50V
VRH
60 2
VDDA
59
PAD07/AN07/KWAD07
58
PAD06/AN06/KWAD06 1K R2349 011:U24 1
57
KEY_CTL_0
56 PAD05/AN05/KWAD05
011:U24
PAD04/AN04/KWAD04 1K R2347
55 KEY_CTL_1 R2357
PAD03/AN03/KWAD03 0 R2348 100
IC1204 54 C
PAD02/AN02/KWAD02 0 R2346
53
MISO Q1112 B
PAD01/AN01/KWAD01 C2170
52 009:N26 2SC3875S(ALY)
PAD00/AN00/KWAD00 R2350 0 47pF
51
50V 5VST E
R2351
50 VSS2 0
C2169 0.22uF
49 VDD2
PS7/SS 0 R2340
48
PS6/SCK
47 R2358
SCK
PS5/MOSI 0 R2345 009:N27 100
46
PS4/MISO
45
PS3/TXD1
44
43 PS2/RXD1 R2352
0
PS1/TXD0 C2171
42 PTC_TX
PS0/RXD0 47pF
41 012:C8
50V
R2353
0 PTC_RX_5V
PTC_RX_5V
012:J7;012:K14
0
R2339 5VST
R2330
C2166 X900
4.7K C2165
C2162 0.1uF
1uF 7.37280MHz
1000pF 10V 50V
SV VC
50V 6 1
C2163
0.01uF NC TRI-STATE
5 2
50V R2344
10K OUTPUT GND
4 3
R2334 R2336
C2161
0
220pF 100
50V
5VST
R901 10K
SW901
SKHMPWE010
IC900
R902
1K 1 2
KIA7042AF
R904 1K 3 4
R900 0 O 3 1 I
5
2
C901
10uF
C900 G
OPT 16V
PTC_RESET
008:O6;011:M21
IR
B
b_LAN MPI pin3 power control
5VST
R2361
4.7K
BUFFERED_MPI_DIN
009:I14;014:S6
R2363
100
MPI_DOUT
009:I13;014:Y7
SPI_DATA_OUT
C
R2360 009:I13;014:Y14
4.7K B Q1113
2SC3875S(ALY)
E
12V_DCDC
5VST
R2364
0
DCDC_EN
009:N25
C2172
2.2uF
16V
+12V_C_MPI
E
2N3906S-RTK
B Q910
3.3K
R948
C
L902 BEXT_5V
MLB-201209-0120P-N2
C912
220pF
50V MPI_5V or 12V
C
R953
Q909 B 3.3K
b_com_PWCTRL
2SC3875S(ALY)
1/10W
014:K21
E 5%
MPI_5V or 12V (PIN3) Select Control from b-LAN
009:G16
12V_DCDC
L1226 D1249
10uH MBRM140T1G
40V
IC1206
LT3479EFE
C2175
10uF
SW_1 GND_3
16V
1 16
SW_2 GND_2
2 15
L GND_1
3 14
VS SS
4 13
VIN VC
5 12
RT FBN
6 11
SHDN FBP
7 10
R2384
GND VREF 22K
8 9
C2173 C2174
2200pF 0.01uF
50V 50V
R2382
0
37LH250H
09.05.19
9
PTC&DCDC 14