LG G5300 Service Manual page 83

4. TROUBLE SHOOTING
The Melody IC & Speaker part Circuit Diagram
R244
16POLY 10K
40POLY NC
R214
The Power for digital part of The melody IC.
The voltage is 2.8V
R201
13MHz
_MIDI_RST
2V8_VMEM
ADD0
_RD
_MIDI_CS
R244 10K
_WR
_MIDI_IRQ
R212
DATA8
10K
DATA9
DATA10
0
DATA11
DATA12
DATA13
DATA14
DATA15
C212
2V8_VMEM R210 3.3K
1000p
C214 0.1u
R212
0
10K
R215
C218 0
0.1u
These 4 components make up the analog
amplified stage of melody.
0
1
11
CLK1 HPOUT_R
4
10
_RST
30 HPOUT_L R203
A0
33K
31 12
EQ1
_RD
29
_CS
5
13
EQ2
NC
28
_WR
3
_IRQ
27 14
EQ3
D0
26
2
D1 LED
25
19
D2 MTR
24
D3
U207
23
C312, C315, R315, R317
D4
YMU762
22
17
D5
SPOUT1
21
D6
20
D7
PLLC SPOUT2
6
18
3V3_VMIDI
VREF
9
SPVDD 15
32 IOVDD
VDD
7
C217
0.1u
16
VSS SPVSS
8
- 82 -
C201
0.01u
R205
82K
C205
390p
R207 0
R209 0
C215 C216
47p 47p
CN201
1
SPK+
2
SPK-
Speaker