LG 55EC9300 Repair Manual page 46

AUDIO AMP(NTP7514) TWEETER
+24V +24V_AMP
L11901
UBW2012-121F
AUD_LRCH
AUD_LRCK
AUD_SCK
R11903
100
I2C_SDA1
I2C_SCL1
+3.3V_NORMAL
R11902
10K
AMP_MUTE_MICOM
C
R11901
B
Q11901
AMP_MUTE
MMBT3904(NXP)
10K
AMP_MUTE_MICOM
AMP_MUTE_MICOM
E
POWER_DET
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
+3.3V_NORMAL
AMP_RESET_N
L11902
BLM18PG121SN1D
AUD_MASTER_CLK
C11906
0.1uF
16V
NC_1
1
VDD_PLL
2
NC_2
3
C11901
1uF
GND
10V 4
NC_3
5
C11902
DVDD
1uF
6
10V
SDATA
7
WCK
8
BCK
9
SDA
10
R11904
100
C11905
C11903
33pF
33pF
50V
50V
AMP_MUTE_MICOM
R11906
100
AMP_MUTE_MICOM
C11904
1000pF
50V
AMP_MUTE_PWR_DET
R11905
100
+3.3V_NORMAL
+24V_AMP
C11909
10uF
35V
OUT1B
30
PGND1B
29
THERMAL
BST1B
28
41
VDR1
27
NC_4
IC5600 26
AGND
NTP7514 25
VDR2
24
0x56
BST2A
23
PGND2A
22
OUT2A
21
+24V_AMP
C11910
10uF
35V
C11908
22000pF
50V
TP5601 WOOFER_MUTE
PAGE 18
L11903
10.0uH
NRS6045T100MMGK
R11907
3.3
1/10W
C11921
0.1uF
50V
C11913
390pF
50V
C11919
0.47uF
50V
C11914
390pF
50V
C11922
0.1uF
R11908
50V
3.3
1/10W
L11906
10.0uH
NRS6045T100MMGK
C11911
22000pF
50V
C11917 C11918
1uF 1uF
10V 10V
C11912
22000pF
50V
L11904
10.0uH
NRS6045T100MMGK
R11909
3.3
C11923
1/10W
0.1uF
C11915 C11920
50V
390pF 0.47uF
50V 50V
C11916
390pF
50V
C11924
0.1uF
R11910
3.3 50V
L11905
1/10W
10.0uH
NRS6045T100MMGK
GP4_MT5369
AUDIO[ST]
SPK_TW_L+
R11911
4.7K
R11912
4.7K
SPK_TW_L-
SPK_TW_R+
R11913
4.7K
R11914
4.7K
SPK_TW_R-
2011.11.21
58
LGE Internal Use Only