LG C3400 Service Manual page 106

SPKP_P
SPKP_N
C700 C701 C702 C703 C705
1u 1u 1u 1u 1u
B6 E9
PS RESET_B
J6
C718
CS_B_SCS
H4 H2
A2 CLKIN
J5
1000p
A1_RXD
K6
A0_DATA_TXD
K7 C1
WR_B_SCLK LINEOUT_L
J7
RD_B_SPIMODE
K8 F1
D0_SERINIT LINEOUT_R
J8
D1
H10
D2
H9 E2
D3 VREF
G10
D4
G9
D5
F10 D2
D6 IREF
F9
D7 U702
A1
EUSY0221901 SHORT_K1
E10 K1
INT_SG_B SHORT_A1
F8 A10
INT_DSP_B SHORT_K10
K10
SHORT_A10
B8 B1
BCLK NC8
A8 J1
LRCLK NC9
A7 A2
ASI NC10
B7 B2
ASO NC11
J2
NC12
A5 K2
TRSCK NC13
B5 C3
CLK8K NC14
A4 D3
RDATA NC15
E3
NC16
D9 F3
VIB NC17
C10 G3
LED NC18
K3 C2
PO0 TM0
J3 F2
PO1 TM1
K4 B3
PO2 TM2
J4 A3
PO3 TM3
B4
TM4
C760 0.1u
R760 NA
C761 0.1u
R761 NA
C704 C706
1u 0.1u
R704 180K
C740 150p
U703
3 4
VDD VO+
C707 0.1u R703 8.2K 1
IN-
8
VO-
C710 0.1u R707 8.2K
2
IN+
5 7
AMP_SD SD GND
6 9
BYP BGND
LM4923LQ
C730
R702
1u
100K
R705 180K
C741 150p
2V8_VEXT
U705
MAX4684EBC
C4 C2
NO1 IN1 MIDI_AUDIO_SEL
A4 A2
NO2 IN2
C1 C3
AUX_OUT_L NC1 COM1 EAR_SPK_L
A1 A3
AUX_OUT_R NC2 COM2 EAR_SPK_R
C717
1u
- 105 -
AUDIO AMP.
Differential AMP
1.1W@8ohm / 300mW@32ohm/ Class AB
SPK_P
U701
SPK_N
1
VIN
2
EN1
3
EN2
4
BYP
C714 5
C711
NC1
0.01u
1u
MIC2211-FMBML
C708 C779
NA NA
AMP_SD MIDI_AUDIO_SEL
L AMP DEACTIVE AUDIO(TO EARJACK)
H AMP ACTIVE MIDI(TO EARJACK)
Park Bae Sun
05/01/17
Kim kil su
05/01/17
Song yoon seok
05/01/17
7. CIRCUIT DIAGRAM
10
VOUT1
9
VOUT2
8
NC3
7
NC2
6
GND
11
BGND C712 C713
1u 1u
C3400
MP3 / AAC
Ver 1.1