LG 39LY340H Service Manual page 35

EXT_speaker Single ended
EXT_SPK
C928
10V
1uF
EXT_AMP_L
EXT_AMP_R
10V
1uF
C927
EXT_SPK
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 ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
+24V
EXT_SPK
C914
0.1uF
50V
EXT_SPK
IC901
TPA3124D2PWPR
PVCCL_1 PGNDL_2
1 24
EXT_SPK_DET SD PGNDL_1
2 23
PVCCL_2 LOUT
EXT_SPK
3 22
EXT_SPK
R924
10K MUTE BSL
4 21
SUB_MUTE
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
C911
1uF
50V
VCLAMP PGNDR_2
EXT_SPK 11 14
C912
PVCCR_2 PGNDR_1
1uF 12 13
50V
EXT_SPK
C913
0.1uF
50V
EXT_SPK
EXT_SPK
EXT_SPK
C915
C916
0.1uF
4.7uF
50V
50V
EXT_SPK
EXT_OUT_L
L904
EXT_SPK
C919 C921
R934
22.0uH 10K
0.47uF 0.47uF
4.7K
R936
50V 50V
EXT_SPK
C917 EXT_SPK EXT_SPK
0.22uF
50V C920 C922
R935
0.47uF 0.47uF
4.7K
22.0uH
50V 50V
EXT_SPK EXT_SPK EXT_SPK
L905
EXT_OUT_R
EXT_SPK
EXT_SPK
10K
R937
R930
10K
R932
OPT
10K
EXT_SPK
R931 R933
EXT_SPK 10K 10K
EXT_SPK OPT
C918
0.22uF
50V
EXT_SPEAKER
EXT_SPK
JK902
PEJ034-01
E_SPRING
3
R_SPRING
4
EXT_OUT_R
T_SPRING
5
EXT_OUT_L
B_TERMINAL2 10V C925 C926 +3.5V_ST
7B
1uF 1uF
OPT
OPT 10V
T_TERMINAL2
6B
R908
10V C902
1uF
NC5_L14
EXT. Speaker/H.P.
EXT_SPK
R907
15K
CI_Del_EXT_SPK
100
EXT_SPK_DET
CI
R908-*1
0
1/16W
5%
2013/07/18
15
LGE Internal Use Only