LG 50PC55-ZB Service Manual page 51

9. POWER
P901
SMW250-10
6602T25008J
19V L911
1 P_+19V
HU-1H4532-121
19V
2 C924
100uF
25V
GND
3
GND
4
L912
6V HU-1H4532-121
5
P_6.0V
C928
GND 220uF
6 16V
L918
3.4V HU-1H4532-121
7 P_3.3V
C929
GND 220uF
8 16V
L919
12V
9 HU-1H4532-121
P_12V
C925
GND 220uF
10 16V
PDP ONLY FOR FAN
FAN
L910
MLB-321611
FAN_VCC
500-ohm
STAND-BY
+5VST
R905
READY
1.8K C954
470uF
16V
TP921
D901
SAM2333
READY
5.0V
L913
HH-1M3216-501
+5V_MSP4450
C937
100uF
16V
D900
KDS226
9.0V
A
KDS226
IC904
KA7809ERTM
P_12V
1 3
C901 C915
100uF 2 100uF
16V
16V
L909
HH-1M3216-501
+9V_MSP4450
C903
47uF
0.1uF
C917 16V
L925 C980
HH-1M3216-501 D906
0.01uF
ADAC_8V
EU1ZV(1) C981
47uF
16V
6.TUNER
GND_TU
R671
0
R670
0
R669
0
R668
0
R667 0
R666 0
R665
0
R664
0
TP616 TP617
R663
0
R662
0
GND_TU GND
R687 R688
0 0
R675
0
R680
0 R678
0
R681 R676
0 0
GND GND
GND_1 GND_2
R686 R677
0 0
R685 R673
0 0
R682 R679
0 0
J600
R684 R674
0 0 KCN-BT-0-0053
GND_3 GND GND_4 GND 1
2
3
4
GND_TU
3V3
1.8V 1.8VA_FE
R624 100
I2C_SCL1 FE_SCL
R625 100 L605
I2C_SDA1 FE_SDA LEMC3225T-6R8M
R629 100
C623 C624 TUNER_RESET
1
DTV_TU_I2C DTV_TU_I2C
47pF 47pF C639
100uF 2
GND_TU GND_TU
GND GND_TU
Copyright©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
+5VST
R915
10K +5VST
R923
3 10K
R919
Q901 2 33K
3
R925
P900 R939 0 2SC3875S 1 Q904 2 33K
2SC3875S RL_ON/PWR_ONOFF_2
SMW250-13
6602T25008M
1
FOR FULL HD LCD STAND_BY 1W
L908 R938 0
AC_DET 1
IN OUT
RL_ON GND L904
2 TP923
/POWER ON
IN OUT +5VST
L900 GND
5VST 3
R940 0 +5VST
HU-1H4532-121 R917
GND 4 10K
R924
VaVs_ON L903
10K
/INVERTER 5 3 R920
ON IN OUT
L906 33K
5V_DET C955 0.47uF GND 2
/ERROR OUT 6 Q903
IN OUT 3 R926
2SC3875S 1 Q900 2 33K
3.3V ON GND 2SC3875S INV_CTL/VAVS_ON
7
/BRI CTRL R935 0
1 FOR FULL HD PDP STAND_BY 1W
5VST 8
GND 9
NC R927 4.7K
5V_MNT
/PWM 10
DIMMING ERROR_OUT
5000:1
L901 5000:1
6V 11
R910 0
Vbr_A
IN OUT
GND 12 GND
L902
L905
3.3V ON 13 R929 0
IN OUT Vbr_B_2
IN OUT FOR LCD_AI,FULL_HD_LCD_AI
GND
GND
R928 0
0.01uF Vbr_B_1
R936 0 R937 0 5000:1_POWER,CMO
C909
OPTION FOR 5000:1 ONLY LCD
+5VST
R932
R931 10K
100
3
+5VST FOR PDP, HD_PDP
2
Q906
+5VST
R911 2SC3875S 1
10K
R916
10K
3 R913
33K
2
Q905 3 R918
2SC3875S 1 Q902
2 33K
2SC3875S 3.3V_ON
OPTION FOR PDP
1
SUPPLY 5V TO module cont. B/D
L907
HH-1M3216-501 +3.3V_SWITCH
D902
KDS226
C912
C 47uF
16V
A AC 3.3V_CTZ
IC900
FAN1587AD33X D905
KDS226
IN IN OUT OUT
GND
C957 C960 C969 C972
100uF 0.1uF ADJ 100uF 0.1uF
16V 16V 50V KDS226
MVK IC903
SC156515M-1.8TR
D903
KDS226 VIN VO
C 2 4
A AC
EN ADJ
1 5
IC901 1.8V_CTZ
3
FAN1587AD33X
GND
IN IN OUT OUT TP913
GND
C958 C961 C970 C973 R900
100uF 0.1uF ADJ 100uF 0.1uF
16V 16V MVK 50V 10K
1.8V_CORE_CTZ
HH-1M3216-501
L923
500-ohm
R901 C907
C975 100uF
10K 100uF 16V
16V
1%
R902 1.8V_CORE_CTZ is changed
20K
due to ability of regulator
1%
D904
KDS226
C
+2.5V_DDR_CTZ
A AC
IC902
AZ1117H-2.5TR/E1
INPUT 2 OUTPUT
3
1
C959 C962 ADJ/GND C908
100uF 0.1uF C971 0.1uF
16V 100uF 16V
16V
TDFC-G106P
TU600
5V_TU
R661
4.7K
TPS2010 TPS2031
R659 0
R660 C
10K B
5V_ANN_CTL TPS2031 Q610 TPS2031
2SC3875S E
TP621 TP619 TP620
GND
C642
47pF
C601
100pF
C641
47pF
5V_TU
L600
LEMC3225T-6R8M
1
C640
100uF
16V
2
3.3V_TUNER
1.8VA_FE
GND_TU
SIF
Q602
2SA1504S
GND
GND
TP656
Q606
2SA1504S
TP658
R649
150
GND
TP657
R640 C GND
0 B Q604
2SC3875S GND
FE_RESET
E
C635
1K
4700pF R648
C637
4700pF
GND
GND
FOR LCD STAND_BY 1W
5. power2
R911-*1 R913-*1 R915-*1 R916-*1 R917-*1 R918-*1 R919-*1 R920-*1
1K 10K 1K 1K 10K
10K 10K 33K
R923-*1 R924-*1 R925-*1 R926-*1 R930-*1 R932-*1 R933-*1 R934-*1
1K 10K 33K 1K
10K 10K 1K 10K
3.3 volt
IC504
KIA78R33F GND
R911-*2
R913-*2 R915-*2 R916-*2 R917-*2 R918-*2 R919-*2 R920-*2
10K 10K 1K 10K 10K 10K 10K 10K
6
R924-*2 R925-*2 R926-*2 R930-*2
R923-*2 R932-*2 R933-*2 R934-*2 1 2 3 4 5
1K 10K 10K 10K 10K 1K 1K 10K P_6.0V
GND
C530 C532
C528
R911-*3 R913-*3 R915-*3 R916-*3 R917-*3 R918-*3 R919-*2 220uF 0.1uF 0.1uF
R920-*3 16V
20K 6.2K
20K 10K 6.2K 10K 10K 10K
R923-*3 R924-*3 R925-*3 R926-*3 R930-*3 R932-*3 R933-*3
R934-*3
GND
6.2K 10K
6.2K 10K 10K 6.2K 6.2K 10K
GND
IC505
KIA78R33F
6
3.3V_TUNER
ONLY FOR PDP
1 2 3 4 5
Q906, Q907, R930, R931
+5VST
R932, R933, R934
R933
10K GND
R934
33K
3
R930
Q907 33K
2 5V_ON C548 C550 C551
2SC3875S 100uF 0.1uF 0.1uF
16V 16V 16V
1
GND GND_TU
R554
100
1/10W
TUNER_3.3V_ON 5%
DDR SDRAM 2.5 VOLT
P_3.3V
IC502
SC1565IST-2.5TR
VIN 1
2
GND
C520
C519
100uF 0.1uF
16V
GND
4. OPTION
C612
C616
0.1uF 47uF
16V
IC600
GND_TU
TPS2010ADR
5V_ANN_MNT
R652
GND OUT4 2K
1 TPS2010 8
IN1 OUT3
2 7
R653
IN2 3 6 OUT2 10K
EN OUT1
4 5
R654
0.1uF 0 GND
C615 TPS2010
IC600-*1
TPS2031
TPS2031DR
GND GND 1 8 OUT_3
IN_1 2 7 OUT_2
IN_2 3 6 OUT_1
EN 4 5 OC
5V_TU
L601
LEMC3225T-6R8M
TP630
R657
10
TP631
Q609
2SA1504S
R656 E
OPT
B R658
2.2K C R655
C 10K
B BOOSTER
C638
C603 Q608
E
0.01uF 100uF 2SC3875S
GND_TU GND_TU
[SCART PIN8]
P_12V
OPTION: RF AGC
(USE ONLY FOR SECAM) 3
R416 R417 2 C Q402
0 0
B
2SC3875S
E 1 013:C8
REC_8
C633 USE FOR SECAM TP445
R414 C 3 4.89V / 9.09V_120ohm(LOAD)
4.7uF 001:F8 1K 2
6.3V PIO2B6 B Q401
2SC3875S
C TP636 5.19V / 10.91V_1Kohm(LOAD)
R642 E 1
USE FOR SECAM_1 Q603 B 10K TP446
2SC3875S AGC_SPEED_CTL
USE FOR SECAM E USE FOR SECAM R415 C 3
001:F8 1K 2 B Q400
GND PIO2B7
2SC3875S
1 E
C604-*1 GND For SECAM TP447
10pF
Q603, R642
USE FOR SECAM_LCD C604, C633
GND
5V_TU
5.0V
HH-1M3216-501 OPTION
L607
TP660
ST UART FOR DEBUG
READY
C643
2.2uF
3V3_CI
GND
OPT
C403
0.1uF
16V IC401 C408
0.1uF
ICL3232CBNZ
OPT
OPT
C404 C1+ VCC
1 16
0.1uF OPT GND
C405 V+ GND
2 15
0.1uF
OPT R456
C1- 3 14 T1OUT
C2+ R1IN R455
4 13
OPT C406 C2- R1OUT R419 OPT
5 12
0.1uF
C407 V- T1IN R420 OPT
6 11
0.1uF
L604 OPT T2OUT 7 10 T2IN
3.3uH IF YOU WANT TO USE CN401, R449,R450 -> 0 Ohm ADD
FI-B2012-332KJT
TU_MAIN GND R2IN 8 9 R2OUT
TP442
GND GND
R651
0
TV_VOUT
Q607
2SA1504S
AM_AUDIO to MSP
[POWER BLOCK]
5.0V For only C.I.
Over current protection can be operated
IC507
GND
KIA78R05F
6
3.3V
1 2 3 4 5
5.0V_CI
P_6.0V
GND
C534
220uF 1 C542
16V C544
C543
C541 0.1uF 0.1uF
100uF 2 100uF
16V
16V
5.0 volt
GND GND
IC503 R1775
GND
CI_EN 100
KIA78R05F
R1776
6 4.7K
1 2 3 4 5
GND
P_6.0V 5.0V
GND
1 C529 C531
C533
C527 0.1uF 0.1uF
100uF
100uF 2 16V
C549
100uF 16V
16V
GND GND
R557
22
1/10W
5%
CPU(STi5100) core 1.25 volt
IC501
GND SC156515M-1.8TR
VIN VO
Min of Vc:2V Ic:20uA 2 4
EN ADJ
1 5
P_3.3V
1.2V
3
GND
C517
220uF C518
16V
0.1uF C524 C526
470uF 0.1uF
16V
GND
1.8V Regulator for TUNER
Locate close to the TUNER
P_3.3V
2.5V
1.8V
IC500
SC1565IST-1.8
3 VO
VIN 3 VO
1
2
C523 C525 C516 GND
C515 C522
100uF 100uF 0.1uF C521
0.1uF 0.1uF 100uF
16V 16V
16V
GND GND
GND
CI OPTIONs(UK)
3V3_CI
IC403 C409
74LVC32AD 0.1uF
16V
003:E5 1A VCC
CI_CD1 1 14 GND
003:E7 1B 4A
CI_CD2 2 13
001:E2 1Y 4B
IRQ2 3 12
R421
47 2A 4 11 4Y
OR gate
2B 3B
5 10
2Y 3A
6 9
GND 3Y
7 8
GND
IC402
TC74LCX08FT 3V3_CI
1A VCC
003:H6;003:L3 CI_OE 1 14 C410
16V FAN_VCC
003:E6;003:L4 1B 2 13 4B
CI_IORD 0.1uF
1Y 4A
003:G3 3 12 GND
D_T/R
2A 4Y
003:H6;003:L3 FE_TS_DATA_VAL 4 AND GATE 11
9V_ON
2B 3B
TUNER_ERROR 5 10
47 2Y 3A
003:G3 6 9
R412
FE_TS_DATA_VAL_AND_ERR
GND 7 8 3Y
GND
IC404
74LVC14APW 3V3_CI
1A 1 14 VCC
003:E6 CI_WAIT
C411
001:F2 R413 1Y 6A 0.1uF
47 2 13 16V
CPU_WAIT
2A 6Y GND
3 12
INVERTER
2Y 5A
4 11
3A 5 10 5Y
3Y 4A
6 9
CI_CS 003:F8;003:H6;003:I4;003:K3;003:K6
001:F8;003:B4 TS_SEL
GND 4Y
7 8
CI_LATCH 003:K6
003:B7 TS_SEL_CI
8V_ON
GND
3.3V 3V3_CI
L400
HH-1M3216-501
C413
C412 1 1 C414 C415
16V
10uF 0.1uF 10uF 0.1uF
2 2 16V 16V
16V
GND GND
SDA
SCL
SPDIF OPTIC JACK
OPTION
CON400
35337-0320
OPT
1
J400
SPDIF
2
SPDIF_OUT GND GND
2 1
3 R437
OPT
22 INPUT GND
4 3
OPT
GND Option for remote control 5.0V 5V 6 5 GND
DEBUG_UART_RX
PI4[1]
STi5100
DEBUG_UART_TX PI4[0] 3_STATE_BUFFER
R543,R544 -> DELETE SPDIF_STI_OUT
SPDIF_MSP_OUT
SPDIF_OUT
LRCLK_DTV
HDMI_LRCK
LRCLK_MUX
% MUST BE PLACED NEAR IC100
5.0V
C537
0.1uF
GND
TP530
R524 E
001:L5 0
CVBS
B 2SA1504S
R550
C Q504 0
SP_CVBS
013:B2
GND
005:C8
OUT_LEFT_AMP
ADAC_8V
005:C9
OUT_RIGHT_AMP
C553
IC506
MC33078DR2G
0.1uF
R537
15K OUTPUT1 1 8 VCC
GND
R544
001:K5 R543
10K INPUT1- 2 7 OUTPUT2
OUT_LEFT R534
15K
R540 10K
INPUT1+ 3 6 INPUT2-
10K
VEE 4 5 INPUT2+
R541 R536
10K 10K
GND
R539 GND GND
001:K6 10K
OUT_RIGHT
Q502
2SC3875S
R526
001:F8 E
2K
DTV_AUDIO_MUTE_BUF
B GND
C
R527 E Q503
C539 2K
2SC3875S R547
0.1uF B 013:C5
100
C DTV_LOUT
R548
TP520 100 013:C4
GND DTV_ROUT
GND
OUT_LEFT_AMP
OUT_RIGHT_AMP
FAN OPTION
FAN
IC406
KIA78R09F
FAN_1EA
6 P400
GIL-G-03-S3T2
C424 FAN_VCC
1 2 3 4 5 0.1uF L406
1
R432
C425 R431 100 FAN_1EA 12K L407 2
47uF
FAN FAN 16V
C417 1 C419 R433
47uF FAN_ALARM FAN_1EA FAN_1EA JP402 3
0.1uF 16V 10K
FAN 2 C438
FAN
FAN READY JP411
R423
100
L411
R427
4.7K
FAN
IC405
KIA78R09F
FAN
6 C422
D401 EU1ZV(1)
0.1uF R429 10
FAN_FULL HD
1 2 3 4 5
FAN C423
47uF
16V FAN_PDP
FAN R429-*1
18
C416
C418
0.1uF 47uF
16V
FAN
FAN
P402
SMW200-08
FAN L402 JP408
R424 HH-1M3216-501 FAN_FULL_HD
100 FAN_VCC 1
FAN_FULL_HD
2
L412 JP410
HH-1M3216-501
5.0V 3
FAN_FULL_HD
4
L401
FAN_FULL_HD
HH-1M3216-501
5
FAN_FULL_HD C439 JP406
6
FAN_ALARM
R400
100 L403
7
FAN P_3.3V C436
FAN_FULL_HD JP404
IC407 FAN_FULL_HD READY
8
LM75
LM75CIMX-3 JP409
FAN
R425 FAN_FULL_HD
100 L405
1 SDA +VS 8
R426 FAN
100 2 0.1uF
SCL A0 7
C427 FOR ONLY USE 60"PDP(PY3 Tool)
FAN FAN
3 6
C420 OS A1
READY C421
READY R430
4 5
GND A2 10K
TP437
I2S SWITCHING (DTV&HDMI)
P_3.3V
IC410
TC74LCX157FT
R438 0 SEL VCC
1 16
1A LOW ST
2 15
1B 3 HIGH 14 4A PCMDATA_DTV
R441 100 4B TO MSP
1Y 4 13 HDMI_LRCH
C435
READY 2A 4Y R446 100
5 12 PCMDATA_MUX
C434
READY
2B 3A SCLK_DTV
6 11
R439 100
2Y 7 10 3B HDMI_SCK
C432 R448 100
GND 8 9 3Y SCLK_MUX
READY
C433
READY
LGE Internal Use Only