LG 42LY770M, Service Manual

Page: 47 / 53

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.
R8760 330
R8744 33
R8788 33
R8717 4.7K
R8722
4.7K
Q8717
MMBT3904(NXP)
E
B
C
HDMI_CEC_PTC
R8757 22
+3.5V_ST
R8737 22
R8741
4.7K
R8745
470
+3.5V_ST
R8730
47K
C8729
47pF
50V
OPT
POWER_ON/OFF2_2
Q8712
MMBT3904(NXP)
E
B
C
C8714
0.1uF
16V
PTC_EEPROM_SCL
C8718 1uF
25V
R8792 OPT 22
/UPDATE_BY_CPU
AMP_EN
R8766 22
R8729 100
PTC_TX
R8716
47K
R8751 22
PTC_EEPROM_SCL
POWER_ON/OFF2_3
SW8701
SKHMPWE010
1 2
4 3
5
R8734
1K
OPT
R8758 100
UART3_TX
Q8719
MMBT3904(NXP)
E
B
C
UART3_TX
Q8718
MMBT3904(NXP)
E
B
C
MPI_DIN
R8780 OPT
+3.5V_ST
ETNHUB_PWR_ON/OFF
IR
R8774 33
UART3_TX
POWER_ON/OFF1
R8740
4.7K
/RTL8201_PMEB
R8767
10K
R8748 100
PTC_EEPROM_SDA
C8717
2200pF
+3.5V_ST
D8700
5.6V
OPT
C8723 0.1uF
RL_ON
R8743
4.7K
C8715
0.1uF
16V
WIFI_EN
PTC_RX
R8765
WOL_MICOM
22
R8761 100
MPI_DOUT
EXT_SPK_DET
POWER_ON/OFF2_4
UART3_RX
R8714
4.7K
/RTL8201_INT
+3.5V_ST
R8733
4.7K
UART3_RX
D8701
5.6V
OPT
R8715
4.7K
ZD8705
3.6V
+3.5V_ST
C8711
27pF
OPT
EPHY_MDIO
C8724 0.47uF
/ETHERNET_RESET
SOC_RESET
UART3_RX
C8712
20pF
OPT
R8773 33
R8787 33
UART_SWB
C8713
10uF
6.3V
AMP_MUTE
R8781
10K
PTC_WOL
R8738 22
R8742
4.7K
C8728
47pF
50V
OPT
R8753 100
POWER_DET
R8756 100
C8716
0.1uF
16V
POWER_ON/OFF2_1
R8764
WOL_MICOM
22
X8700
32.768KHz
WOL/WIFI_POWER_ON
KEY2
+3.5V_ST
R8723 100
R8720 22
RESET_HIGH
R8735 1K
OPT
PTC_EEPROM_SDA
EXT_SPK_MUTE
R8759 100
R8772 4.7K
C8701
0.01uF
25V
JK8701
PEJ027-04
6B
T_TERMINAL2
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
+3.5V_ST
SW8700
SKHMPWE010
1 2
4 3
5
IC8701
MSP430F5419A
1
P6.4/A4
2
P6.5/A5
3
P6.6/A6
4
P6.7/A7
5
P7.4/A12
6
P7.5/A13
7
P7.6/A14
8
P7.7/A15
9
P5.0/A8/VREF+/VeREF+
10
P5.1/A9/VREF./VeREF.
11
AVCC
12
AVSS
13
P7.0/XIN
14
P7.1/XOUT
15
DVSS1
16
DVCC1
17
P1.0/TA0CLK/ACLK
18
P1.1/TA0.0
19
P1.2/TA0.1
20
P1.3/TA0.2
21
P1.4/TA0.3
22
P1.5/TA0.4
23
P1.6/SMCLK
24
P1.7
25
P2.0/TA1CLK/MCLK
26
P2.1/TA1.0
27
P2.2/TA1.1
28
P2.3/TA1.2
29
P2.4/RTCCLK
30
P2.5
31
P2.6/ACLK
32
P2.7/ADC12CLK/DMAE0
33
P3.0/UCB0STE/UCA0CLK
34
P3.1/UCB0SIMO/UCB0SDA
35
P3.2/UCB0SOMI/UCB0SCL
36
P3.3/UCB0CLK/UCA0STE
37
DVSS3
38
DVCC3
39
P3.4/UCA0TXD/UCA0SIMO
40
P3.5/UCA0RXD/UCA0SOMI
41
P3.6/UCB1STE/UCA1CLK
42
P3.7/UCB1SIMO/UCB1SDA
43
P4.0/TB0.0
44
P4.1/TB0.1
45
P4.2/TB0.2
46
P4.3/TB0.3
47
P4.4/TB0.4
48
P4.5/TB0.5
49
P4.6/TB0.6
50
P4.7/TB0CLK/SMCLK
51
P5.4/UCB1SOMI/UCB1SCL
52
P5.5/UCB1CLK/UCA1STE
53
P5.6/UCA1TXD/UCA1SIMO
54
P5.7/UCA1RXD/UCA1SOMI
55
P7.2/TB0OUTH/SVMOUT
56
P7.3/TA1.2
57
P8.0/TA0.0
58
P8.1/TA0.1
59
P8.2/TA0.2
60
P8.3/TA0.3
61
P8.4/TA0.4
62
VCORE
63
DVSS2
64
DVCC2
65
P8.5/TA1.0
66
P8.6/TA1.1
67
P8.7
68
P9.0/UCB2STE/UCA2CLK
69
P9.1/UCB2SIMO/UCB2SDA
70
P9.2/UCB2SOMI/UCB2SCL
71
P9.3/UCB2CLK/UCA2STE
72
P9.4/UCA2TXD/UCA2SIMO
73
P9.5/UCA2RXDUCA2SOMI
74
P9.6
75
P9.7
76
P10.0/UCB3STE/UCA3CLK
77
P10.1/UCB3SIMO/UCB3SDA
78
P10.2/UCB3SOMI/UCB3SCL
79
P10.3/UCB3CLK/UCA3STE
80
P10.4/UCA3TXD/UCA3SIMO
81
P10.5/UCA3RXDUCA3SOMI
82
P10.6
83
P10.7
84
P11.0/ACLK
85
P11.1/MCLK
86
P11.2/SMCLK
87
DVCC4
88
DVSS4
89
P5.2/XT2IN
90
P5.3/XT2OUT
91
TEST/SBWTCK
92
PJ.0/TDO
93
PJ.1/TDI/TCLK
94
PJ.2/TMS
95
PJ.3/TCK
96
RST/NMI/SBWTDIO
97
P6.0/A0
98
P6.1/A1
99
P6.2/A2
100
P6.3/A3
Q8711
MMBT3906(NXP)
E
B
C
ZD8706
3.6V
R8770
4.7K
KEY1
R8771
4.7K
+3.5V_ST
EPHY_MDC
IR
R8707 22
R8719 10K
LED_R
R8785
10K
R8775 68K
R8776
33K
+3.5V_ST
R87008 100K
R87007 0
UART_SWB
R87009
10K
bLAN_POWER_MANAGE
MISO_1
R87070
100
MISO_1
IC8704
TXS0104EDR
3
A2
2
A1
4
A3
1
VCCA
6
NC_1
5
A4
7
GND
8
OE
9
NC_2
10
B4
11
B3
12
B2
13
B1
14
VCCB
C8730
0.1uF
R87069
100
R87090
4.7K
+3.5V_ST
SPI_CLOCK
R87071
100
R87089
11K
SPI_DIN
C8732
0.1uF
+5V_ST
SPI_DOUT
+5V_bLAN_PWR
Q8728
MMBT3904(NXP)
E
B
C
+3.5V_ST
R8777
10K
bLAN_IR
R87091 10K
C8700
0.1uF
16V
P_CH_DN_1 022:O12
ZD8707
3.6V
P_CH_UP
023:X11
Q8706
2SC3875S(ALY)
E
B
C
L8701
BLM18PG121SN1D
R8793
10K
R8790
0
C8705
0.1uF
R8769 100
P_CH_DN
023:Z4
R8763
4.7K
ZD8708
3.6V
ZD8709
3.6V
P_ON_OFF_1 022:O12
IC8703
HEF4053B
3
Y1C
2
Y0B
4
ZC
1
Y1B
6
E
5
Y0C
7
VEE
8
VSS
9
SC
10
SB
11
SA
12
Y0A
13
Y1A
14
ZA
15
ZB
16
VDD
R8779 100
P_ON_OFF
023:Y6
R8783 100
P_CH_UP_1
022:O11
R8747
0
R8721
0
Pillow_POWER_MANAGE
022:X4;022:AF17
R8746 4.7K
R8794
1K
R8736
4.7K
D8705
100V
1N4148W
DC_DC_EN
+3.5V_ST
+3.5V_ST
+3.5V_ST
+3.5V_ST
R87092 4.7K
IC8702-*2
M24C16-R
PTC_EEPROM_MEDIATEK
3
NC_3
2
NC_2
4
VSS
1
NC_1
5
SDA
6
SCL
7
WC
8
VCC
IC8702
BR24G16FJ-3GTE2
PTC_EEPROM_ROHM
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
ETNHUB_INT
ETNHUB_ENDEFER
P_ON_OFF_1
022:H25
R8800 100
R8791 100
R8795 100
P_CH_UP_1
022:A25
P_CH_DN_1
022:H26
R8801 0
SEL_PILLOW_0
023:J10
R8804 0
SEL_PILLOW_1
023:J7
Pillow_POWER_MANAGE
022:J21;022:X4
R8803 330
R8732 22
R8802 330
OPT
R8749
OPT
R8798
OPT
22
PILLOW_MUTE
018:W11
PILLOW_MUTE
018:W11
R87093
330
EDID_WP
IC8702-*1
AT24C16C-SSHM-T
PTC_EEPROM_ATMEL
3
NC_3
2
NC_2
4
GND
1
NC_1
5
SDA
6
SCL
7
WP
8
VCC
R87094
OPT
22
PTC MICOM EEPROM
GND_JIG
BLAN CHECK
GND_JIG
PTC_RESET
BLAN CHECK
PTC_UPDATE
SOC_RESET
POWER_ON/OFF2_1
POWER_ON/OFF2_4
POWER_ON/OFF2_3
POWER_ON/OFF1
LY770M Power SEQUENCE
POWER_ON/OFF2_2
2014.08.07
25
PTC / RJ45
20
BLAN CHECK
GND_JIG
LY770M-UA
bLAN_IR : need to pull up
Write Protection
- Low : Normal Operation
- High : Write Protection
Pillow remote control
Hospital
Hospital
Hospital
Hospital
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Only for training and service purposes
LGE Internal Use Only