LG 40LX770H Service Manual page 48

NEW RJP
+13V
L8700
BLM18PG121SN1D
C8702
R8705
2.2uF
+3.3V_NORMAL 10K 16V
R8701
820
1/10W
1608 R8706
Apply 1608 size
10K
because of derating R8704
R8702
10K
820
C
1/10W
R8708
1608 B Q8705
Q8700
MMBT3904(NXP)
MMBT3904(NXP) 10K
C
R8727 E
R8703 10K
JK8700 47K
B
KRJV9768-1001-024
E
R8778
POWER_12V
1
RGB/TxD
2
COMPOSITE/AUDIO
3
AUDIO/IR
4
HDMI
5
B+ Control
6
Reserved/RxD
7
GND
8
PTC power
+3.5V_ST_PTC
+3.5V_ST
L8702
BLM18PG121SN1D
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Copyright 2015 LG Electronics Inc. All rights reserved.
Only for training and service purposes
Q8725
PMV48XP
+3.5V_ST
G R8712
10K
OPT R8725
10K
Q8702
MMBT3904(NXP) OPT
C
R8724
B
47K
OPT
OPT
E Q8703
MMBT3904(NXP)
C
R8726
POWER_ON/OFF1
B
47K
OPT
E
0
OPT
RJP_CTRL0
R8721 100
RJP_CTRL1
R8709 100
RJP_CTRL2
R8710 100
RJP_CTRL3
R8711 100
RJP_12V_CTRL
R8713 100
RJP_CTRL4
R8718 100
+3.5V_ST_PTC
Q8701
MMBT3904(NXP)
R8719
B
RESET_HIGH
10K
R8717
4.7K
+3.5V_ST_PTC
PTC_UPDATE
C8701
R8714 SW8701
0.01uF
4.7K SKHMPWE010 25V
E 1 2
R8715
/UPDATE_BY_CPU
R8733
4.7K B 3 4
4.7K
Q8711 C 5
MMBT3906(NXP) R8716
47K
C8713 C8714
10uF 0.1uF
16V
6.3V
KEY1
KEY2
RL_ON
POWER_ON/OFF1
POWER_ON/OFF2_1
R8731
bLAN_POWER_MANAGE
OPT
C8711
27pF
X8700
32.768KHz
C8712
20pF
OPT
R8787
UART3_TX
R8788
UART3_RX
RJP_CTRL0
RJP_CTRL1
RJP_CTRL2
RJP_CTRL3
RJP_CTRL4
R8723
/RTL8201_PMEB
PTC MICOM EEPROM
PTC_EEPROM_ATMEL_64KBIT
+3.5V_ST
IC8702
AT24C64D-SSHM-T
64KBIT R87093 0
A0 VCC
1 8
64KBIT R87094 0 A1 WP
2 7
R87095 0
64KBIT A2 SCL R8737 22
3 6
R8738 22
GND SDA
4 5
Write Protection
- Low : Normal Operation
- High : Write Protection
+3.5V_ST_PTC
GND
L8701
1 BLM18PG121SN1D
2 3
VOUT VDD
C8727
BD48K28G R8730
1uF
IC8705
100K
R8722 25V
4.7K
OPT
R8779
C
100
C8717
2200pF
1 2
E
3 4
5
SKHMPWE010
SW8700
PTC_RESET
+3.5V_ST_PTC R8740 4.7K
R8741 4.7K
R8729 100
LED_R R8742 4.7K
R8743 4.7K
1K
R8734
OPT
C8715 C8716
0.1uF 0.1uF
16V 16V
P6.4/A4
1
P6.5/A5
2
P6.6/A6
3
P6.7/A7
4
P7.4/A12
5
P7.5/A13
6
OPT P7.6/A14
7
P7.7/A15
8 IC8701
C8718 1uF P5.0/A8/VREF+/VeREF+
9
25V P5.1/A9/VREF./VeREF.
10
MSP430F5419A
AVCC
11
AVSS
12
P7.0/XIN
13
P7.1/XOUT
14
DVSS1
15
DVCC1
16
P1.0/TA0CLK/ACLK
17
33 P1.1/TA0.0
18
33 P1.2/TA0.1
19
P1.3/TA0.2
20
P1.4/TA0.3
21
P1.5/TA0.4
22
P1.6/SMCLK
23
P1.7
24
P2.0/TA1CLK/MCLK
100 25
/RTL8201_INT
ETNHUB_INT
R8735 1K
EXT_SPK_DET
OPT
WOL/WIFI_POWER_ON
R8792 EPI 22
EPI_CTL
POWER_DET
R8720
22
POWER_ON/OFF2_4
PTC_EEPROM_ATMEL_16KBIT
PTC_EEPROM_ROHM_16KBIT
IC8702-*1
IC8702-*2
BR24G16FJ-3GTE2
AT24C16C-SSHM-T
A0 VCC
1 8 NC_1 VCC
1 8
A1 WP
2 7 NC_2 WP
2 7
+3.5V_ST A2 SCL
NC_3 SCL
3 6
3 6
GND SDA
4 5 GND SDA
4 5
C8700
R8770 R8771
0.1uF
4.7K 4.7K
16V
POWER_ON/OFF2_4(+5.0V_Normal)
PTC_EEPROM_SCL
PTC_EEPROM_SDA
POWER_ON/OFF2_1(DDR MAIN 1.5V)
MISO_1
R8744 33
SOC_RESET
R8745
470
AMP_MUTE
R8773 33
UART3_RX
R8774 33
UART3_TX
R8748 100
PTC_EEPROM_SCL
R8753 100
PTC_EEPROM_SDA
UART_SWB
C8728
47pF
50V
OPT
+3.5V_ST_PTC
WOL_MICOM
P9.7 22
75 R8764
P9.6 R8765 22
74
P9.5/UCA2RXDUCA2SOMI WOL_MICOM
73
P9.4/UCA2TXD/UCA2SIMO
72
P9.3/UCB2CLK/UCA2STE
71
P9.2/UCB2SOMI/UCB2SCL
70
P9.1/UCB2SIMO/UCB2SDA
69
P9.0/UCB2STE/UCA2CLK
68 R8757 22
P8.7 R8766 22
67
P8.6/TA1.1
66
/ETHERNET_RESET
P8.5/TA1.0
65
DVCC2
64 C8723 0.1uF
DVSS2
63
VCORE
62 C8724 0.47uF
P8.4/TA0.4 R8756 100
61
P8.3/TA0.3
60
MISO_1
P8.2/TA0.2
59
P8.1/TA0.1
58
P8.0/TA0.0 R8707
57 22
P7.3/TA1.2
56
P7.2/TB0OUTH/SVMOUT
55 R8760 330
P5.7/UCA1RXD/UCA1SOMI
54
P5.6/UCA1TXD/UCA1SIMO
53
P5.5/UCB1CLK/UCA1STE R8761 100
52
P5.4/UCB1SOMI/UCB1SCL
51
R8768
22 OPT
I2C_SCL_MICOM
R8769 22 OPT
R8798
22 OPT
EDID_WP
R8751 22
EXT_SPK_MUTE
R87009
10K
PTC / RJ45
LX770H Power SEQUENCE
POWER_ON/OFF1(+3.3V_NORMAL)
POWER_ON/OFF2_2(+1.1V_CORE)
POWER_ON/OFF2_3(+2.5V)
SOC_RESET
+3.5V_ST_PTC
+5V_ST
IC8704
TXS0104EDR
VCCA VCCB
1 14
R87069
100 A1 B1
2 13 SPI_CLOCK
A2 B2
3 12
R87071
100
A3 B3
4 11 SPI_DIN
R87070
100
A4 B4
5 10
SPI_DOUT
NC_1 NC_2
6 9
C8730
R87090
0.1uF GND OE 4.7K
7 8
+5V_bLAN_PWR
C8732
0.1uF R87089
11K
GND_JIG
BLAN CHECK
+3.5V_ST_PTC
R8767
GND_JIG
10K
BLAN CHECK
+3.5V_ST_PTC
C
B R87096 4.7K
MPI_DIN
Q8717 R8785
E
MMBT3904(NXP)
10K
EPHY_MDC MPI_DOUT
EPHY_MDIO
C
R8772 4.7K B Q8719
MMBT3904(NXP)
C8729 GND_JIG E
BLAN CHECK
47pF
50V
PTC_WOL OPT
ETNHUB_PWR_ON/OFF
+3.5V_ST_PTC +3.5V_ST_PTC
ETNHUB_ENDEFER
R8777
10K
WIFI_EN
R8781
bLAN_IR
10K
C
R87091 10K B
HDMI_CEC_PTC Q8718
MMBT3904(NXP)
IR C Q8728
POWER_ON/OFF2_3 MMBT3904(NXP) E
R8775 68K B
IR
POWER_ON/OFF2_2
E
R8776
33K
bLAN_IR : need to pull up
AMP_EN
I2C_SDA_MICOM
+3.5V_ST_PTC
R87008
100K
R87007 0
UART_SWB
6B
T_TERMINAL2
7B
B_TERMINAL2
R8758 100
UART3_RX
5
T_SPRING
R8759 100
UART3_TX
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
PEJ027-04
JK8701
LX770H
2015.3.11
20 24
LGE Internal Use Only