LG 32LX330C Service Manual page 42

External Speaker
EXT SPK AMP
+3.5V_ST
EXT_SPK
R3402
47K
EXT_SPK_DET
HEAD_PHONE
C
R3400
Q3400
47K
B
HP_DET MMBT3904(NXP)
P
HEAD_PHONE
E
R3401
1K
AMP_RESET
SIDE_HP_MUTE
EXT_SPK
HP_EXT_SPK_LOUT
EXT_SPK
HP_EXT_SPK_ROUT
Close to AMP IC
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 right reserved.
Only for training and service purposes
A13.2V
EXT_SPK
L3400
UBW2012-121F
EXT_SPK
C3405
0.1uF
50V
Close to Pin3
EXT_AMP_14Y
IC3400
TPA3124D2PWPR
PVCCL_1 PGNDL_2
1 24
SD PGNDL_1
2 23
PVCCL_2 LOUT
3 22
EXT_SPK
R3403
MUTE BSL
10K
4 21
LIN AVCC_2
C3401
5 20
1uF
10V
RIN AVCC_1
C3402
6 19
1uF
10V
BYPASS GAIN0
7 18
AGND_1 GAIN1
8 17
AGND_2 BSR
9 16
PVCCR_1 ROUT
10 15
VCLAMP PGNDR_2
11 14
PVCCR_2 PGNDR_1
12 13
C3400 C3403 C3404
1uF 1uF 0.1uF
50V 50V 50V
EXT_SPK EXT_SPK EXT_SPK Close to Pin10
EXT_SPK EXT_SPK
C3408 C3410
0.1uF 10uF
50V 35V
Close to Pin1
Close to AMP IC
EXT_SPK
EXT_SPK
L3401 OPT
C3411
C3413
22.0uH R3408
0.47uF
4.7K 0.47uF
50V
EXT_SPK
50V
C3407
0.22uF
50V
EXT_SPK
OPT
EXT_SPK
R3409 C3412 C3414
0.47uF
22.0uH 4.7K 0.47uF
50V
EXT_SPK
L3402 50V
EXT_SPK
R3404
10K
R3406
OPT 10K GAIN1 GAIN0 AMP GAIN
EXT_SPK
0 0 20dB
0 1 26dB
1 0 32dB
R3413
R3407
10K 1 1 36dB
10K
C3406 EXT_SPK
OPT
0.22uF
50V
EXT_SPK
C3409
0.1uF
50V
EXT_SPK
Close to Pin19,20
EXT_AMP_15Y_CI
IC3400-*1
PAM8124
PVCCL_1 PGNDL_2
1 24
SD PGNDL_1
2 23
PVCCL_2 LOUT
3 22
MUTE BSL
4 21
LIN AVCC_2
5 20
RIN AVCC_1
6 19
BYPASS GAIN0
7 18
AGND_1 GAIN1
8 17
AGND_2 BSR
9 16
PVCCR_1 ROUT
10 15
VCLAMP PGNDR_2
11 14
PVCCR_2 PGNDR_1
12 13
C3415
47uF
25V
EXT_OUT_L
EXT_SPK
EXT_SPK
10K
R3410
C3416
47uF
25V
EXT_OUT_R
EXT_SPK
EXT_SPK
10K
R3411
EXT SPK Jack
EXT_SPK
JK3400
PEJ034-01
E_SPRING
3
R_SPRING
4
T_SPRING
5
B_TERMINAL2
7B
T_TERMINAL2
6B
EXT_OUT_R
EXT_OUT_L
EXT_SPK_DET
OPT
VA3400
5.6V
LGE Internal Use Only