LG 60LN549E Service Manual page 60

EXT_SPK AMP
+12V/+15V
L1710
EXT_SPK
EXT_SPK
R1776
100
AMP_RESET
TPA3124D2PWPR
+3.5V_ST
PVCCL_1
1
R1777
10K
EXT_SPK
SD
2
EXT_SPK
C
10K EXT_SPK
PVCCL_2
R1778
B Q1700
3
SUB_AMP_MUTE
MMBT3904(NXP)
E
MUTE
4
C1732
1uF
10V LIN
5
EXT_AMP_L
EXT_SPK
EXT_SPK RIN
6
EXT_AMP_R
C1733
1uF
BYPASS
10V 7
EXT_SPK
C1734 AGND_1
1uF 8
50V
AGND_2
9
PVCCR_1
10
VCLAMP
11
EXT_SPK
C1735
PVCCR_2
1uF 12
50V
C1736 C1737
10uF 0 . 1 u F
25V 16V
EXT_SPK EXT_SPK
EXT_SPK_CONTROL/DEBUG
+3.5V_ST
IC1701
NLASB3157DFT2G
C1705
0 . 1 u F
SELECT
JK1701 6 1
PEJ027-04 ON SEMICONDUCTOR
ANALOG SWITCH
VCC
5 2
3 E_SPRING
A
6A T_TERMINAL1
4 3
7A B_TERMINAL1
EAN38256201
4 R_SPRING IC1702
NLASB3157DFT2G
5 T_SPRING
SELECT
6 1
7B B_TERMINAL2
ON SEMICONDUCTOR
ANALOG SWITCH
VCC
6B T_TERMINAL2
5 2
A
4 3
EAN38256201
EXT_SPK OUT
EXT_SPK
JK1700
+3.3V_Normal
P E J 0 3 4 - 0 1
E_SPRING
3 EXT_SPK
R1771
100K
R1772 100
EXT_SPK_DET
EXT_SPK
R_SPRING
4
EXT_SPK_R
T_SPRING
5
EXT_SPK_L
B_TERMINAL2 C1730 C1731
7B
1uF 1uF
OPT OPT
T_TERMINAL2
6B
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.
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
EXT_SPK
L1711
BLM18PG121SN1D
C1738
C1739 C1740
0 . 1 u F C1741
16V 10uF 10uF 0 . 1 u F
EXT_SPK
16V
25V 25V
OPT EXT_SPK EXT_SPK
EXT_SPK
IC1700
PGNDL_2
24 EXT_SPK
PGNDL_1
23
EXT_SPK
EXT_SPK EXT_SPK
L1712 EXT_SPK
C1743 C1744
22.0uH R1779
LOUT
1uF 0 . 4 7 u F
4.7K
22
50V 50V
C1742
0 . 2 2 u F EXT_SPK EXT_SPK
BSL
EXT_SPK
21 50V C1745 C1746
R1780
EXT_SPK 1uF 0 . 4 7 u F
L1713
4.7K
50V 50V
22.0uH
AVCC_2
20 EXT_SPK
AVCC_1
19
EXT_SPK
R1781
10K
GAIN0
R1782
18 OPT
10K
OPT
GAIN1
17
R1783 R1784
BSR 10K 10K
EXT_SPK
16
EXT_SPK EXT_SPK
C1749
0 . 2 2 u F
ROUT 50V
15
PGNDR_2
14
PGNDR_1
13
DBG_SW CONNECTION
L A - B0 DEBUG_NEC/MSTAR
H A - B1 EXT_SPK CONTROL
DBG_SW
+3.5V_ST
R1709
3.6K
B1
EXT_VOL+
GND
B0
DBG_TX
+3.5V_ST
R1710
3.6K
B1
EXT_VOL-
GND
B0
DBG_RX
UART/I2C SWITCH
UART_SW1 CONNECTION
L A - B0 MSTAR ADJ
H A - B1 MSTAR DEBUG
R1720
100
C1747
100uF
25V
IC1703
NLASB3157DFT2G
EXT_SPK_L
+3.5V_ST
EXT_SPK
10K
SELECT
R1790
6
ON SEMICONDUCTOR
ANALOG SWITCH
C1710 VCC
5
0 . 1 u F
A
EXT_SPK_R
4
MST_TX
C1748
EXT_SPK
100uF
10K
EAN38256201
25V
R1791
IC1704
NLASB3157DFT2G
SELECT
6
ON SEMICONDUCTOR
VCC ANALOG SWITCH
5
A
4
MST_RX
EAN38256201
UART_SW CONNECTION
L A - B0
H A - B1
R1721
100
NLASB3157DFT2G
+3.5V_ST
SELECT
6
ON SEMICONDUCTOR
C1711
ANALOG SWITCH
0 . 1 u F VCC
5
A
4
DBG_TX
EAN38256201
NLASB3157DFT2G
SELECT
6
ON SEMICONDUCTOR
ANALOG SWITCH
VCC
5
A
4
DBG_RX
EAN38256201
UART_SW2 CONNECTION
L A - B0
H A - B1
UART_SW1
+3.5V_ST
B1
1
MST_DBG_TX
SELECT
GND
2
C1712
0 . 1 u F
B0
3
UART_TX
NEC_RX
SELECT
B1
1
MST_DBG_RX
GND
2
B0 NEC_TX
3
UART_RX
EEPROM_SW
NEC DEBUG L A - B0
MSTAR DEBUG H A - B1
UART_DBG_SW
+3.5V_ST
+3.5V_ST
IC1705
R1724
C1713
4.7K
0 . 1 u F
B1
1
MST_DBG_TX
GND
EEPROM_SCL
2
B0
3
NEC_DBG_TX
IC1706
B1
1
MST_DBG_RX
GND
2
B0
3
NEC_DBG_RX EEPROM_SDA
EMEA INTERACTIVE
INTERACTIVE
NEC USB_DOWNLOAD
R1728
100
UART_SW2
IC1707
NLASB3157DFT2G
B1
6 1
MST_NEC_TX
ON SEMICONDUCTOR
ANALOG SWITCH
VCC GND
5 2
A B0
4 3
UART_RX
EAN38256201
IC1708
NLASB3157DFT2G
B1
6 1
MST_NEC_RX
ON SEMICONDUCTOR
ANALOG SWITCH
VCC GND
5 2
A B0
4 3
UART_TX
EAN38256201
CONNECTION
NEC-EEPROM
MSTAR-EEPROM
R1731
22
EEPROM_SW
C1714
1uF
50V
IC1709
NLASB3157DFT2G
SELECT B1
6 1
I2C_SCL
ON SEMICONDUCTOR
ANALOG SWITCH
VCC GND
5 2
A B0
4 3
NEC_EEPROM_SCL
EAN38256201
IC1710
NLASB3157DFT2G
SELECT B1
6 1
I2C_SDA
ON SEMICONDUCTOR
ANALOG SWITCH
VCC GND
5 2
A B0
4 3
NEC_EEPROM_SDA
EAN38256201
LP63xH-ZA
2 0 1 2 . 1 1 . 0 5
1 7
EXT SPK
LGE Internal Use Only