LG 42LY750H Service Manual page 41

EXT_SPK AMP
R8610
EXT_SPK_MUTE
MMBT3904(NXP)
EXT_SPK_LOUT_MAIN
EXT_SPK_ROUT_MAIN
EXT_SPK OUT(Single End)
JK8600
PEJ034-01
E_SPRING
3
R_SPRING
4
T_SPRING
5
B_TERMINAL2
7B
T_TERMINAL2
6B
C8672
1uF
10V
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
@area
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
X65763001.cir/086.sht
14/04/01
@suppr THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
@compC
@refer
@partN
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
+24V_AMP
+3.5V_ST
L8602
BLM18PG121SN1D
4.7K
R8608
R8607
C8670
100
0.1uF
50V
C
10K
B
Q8601
IC8601
E
TPA3124D2PWPR
PVCCL_1 PGNDL_2
1 24
R8609 10K
SD PGNDL_1
2 23
PVCCL_2 LOUT
3 22
C8615
0.22uF
MUTE BSL
50V
4 21
C8610
1uF
10V
LIN AVCC_2
5 20
RIN AVCC_1
6 19
C8611
1uF
BYPASS GAIN0
10V 7 18
AGND_1 GAIN1
8 17
AGND_2 BSR
9 16
C8616
0.22uF
PVCCR_1 ROUT 50V
10 15
C8671
1uF
50V
VCLAMP PGNDR_2
11 14
C8612
PVCCR_2 PGNDR_1
1uF 12 13
50V
C8613
0.1uF
50V
EXT_OUT_R
EXT_SPK_DET
EXT_OUT_L
OPT OPT
Connected Disconnected
C8618 C8614
1uF +3.3V_NORMAL
1uF
10V
10V High
Low
R8616
15K
EXT_SPK_DET
C8608
C8609
0.1uF
4.7uF
50V
50V
EXT_OUT_L
L8603
C8657 C8659 R8615
22.0uH R8602
1uF 0.47uF 10K
4.7K
50V 50V
C8658 C8660
R8603
1uF 0.47uF
4.7K
22.0uH 50V 50V
L8604
EXT_OUT_R
R8614
10K
R8604
10K
R8611
OPT
10K
OPT
R8605
R8612
10K 10K
* 3.5V_ST -> 5V_ST Step-up Power
+3.5V_ST
C8600 C8639
0.1uF 10uF
16V 10V
OPT
+5V_ST
D8602
L8605
SMAB34
3.6uH
40V
OPT
C8607
+3.5V_ST C8619
1uF
22uF
16V
16V
6 5
SW_1 PGND
OPT
C8620
R1
7 4
100pF
SW_2 AGND
R8649 50V
3.3K
8 3 1%
IN EN
C8601
1uF
10V
9 2
FREQ FB
R8650
R2
10 1 18K
SS COMP
1%
C8603
R8674
0.1uF
[EP]AGND TPS61087DRC
16K
16V
IC8600
C8606
2700pF
50V
xxLY750H-UA 2013.12.24
EXT.SPK/STEP-UP 16 21
LGE Internal Use Only