Earphone Block; Usb Block - LG 42LE5400 Service Manual

EARPHONE BLOCK

EARPHONE AMP
C304
1uF
10V INL-
HP/BT_LOUT_N
11:F2
C305
1uF
INL+
10V
HP/BT_LOUT_P
11:F2 C306
1uF
INR+
10V
HP/BT_ROUT_N
C307
11:F2
1uF
INR-
10V
HP/BT_ROUT_P
11:F2
EARPHONE JACK SIDE
HP_L_OUT
Q26
Q300
MMBT3904-(F)
OPT
HP_R_OUT
Q21
Q301
MMBT3904-(F)
OPT
WIRELESS I2C LEVEL SHIFTER
LEVEL SHIFTER
+3.3V_NORMAL
R324
10K
OPT
Q304
FDV301N
OPT
WIRELESS_SCL SCL3_3.3V
SDA3_3.3V
WIRELESS_SDA
Q305
FDV301N
OPT
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.
+3.3V_NORMAL
L302
10uH
C315 C317
10uF 0.1uF
16V
10V
L304
R308
BG2012B080TF
0
1/16W C321
C308
Close to the IC
22000pF
1uF
50V
10V
+3.3V_NORMAL
R306
C318 100K
2.2uF
16 15 14 13 OPT
R309 OPT
10V
HPVDD 4.7K
R310
1 12
0
C
CPP
R311
2 11
1K
Q308 B
IC300 C319 2SC3052
TPA6132A2 2.2uF
PGND
10V
3 10
E
CPN
4 EAN60724701 9
5 6 7 8
L303
R307
BG2012B080TF
0
C316 1/16W
C320
2.2uF
22000pF
10V
50V
C
E
JK300
B
Q303
KJA-PH-0-0177
MMBT3904-(F)
B
GND 5
OPT
E
C
L 4
R314
120
DETECT 3
DEV
9:G3 SIDE_HP_DET
R 1
EAG61030001
C
E
B Q302
MMBT3904-(F)
B
OPT
+3.5V_ST
E
C
Q306
ISA1530AC1
OPT
R315
C
150
OPT
Q307 B
SIDE_HP_MUTE Q23;81:I4
2SC3052
OPT
E

USB BLOCK

USB2
+3.3V_NORMAL
+5V_USB
C311
C313
HP_L_OUT 10uF
0.1uF
10V
USB_PWRON2
R321
2.7K
10:D4 USB_PWRFLT2
10:D4
10:D4
SIDE_HP_MUTE
HP_R_OUT
CHANGE USB_PWRFLT PULL-UP FROM 5V TO 3.3V
USB1 (DVR Ready)
+3.3V_NORMAL
+5V_USB
C312
C314
10uF
R322
0.1uF
10V
2.7K
USB_PWRON1
10:D4
USB_PWRFLT1
10:D4 USB_DM1
10:D4 USB_DP1
IC301
AP2191SG-13
L301
R320 GND 8 NC
1
4.7K MLB-201209-0120P-N2
OPT IN_1 7 OUT_2
2
IN_2 6 OUT_1 120-ohm
3
EN 5 FLG
4
C310
EAN60921001 100uF
16V
DEV
10:D4
0 R318
USB_DM2
USB_DP2
D303 D301
CDS3C05HDMI1
CDS3C05HDMI1
5.6V
5.6V
ESD_USB
ESD_USB
IC302
AP2191SG-13
R319
L300
4.7K GND 8 NC
1
OPT MLB-201209-0120P-N2
IN_1 7 OUT_2
2
IN_2 6 OUT_1 120-ohm
3
C309
EN 5 FLG
4
100uF
EAN60921001
16V
DEV
10:D4
0 R317
D300
D302
CDS3C05HDMI1 CDS3C05HDMI1
5.6V
5.6V
ESD_USB
ESD_USB
GP2_BCM_ATSC
USB/EAR-PHONE
USB
USB(DVR Ready)
09/10/xx
3 100