Speaker Trouble - LG S5000 Service Manual

4.9 Speaker Trouble

Test Points
C220(SPOUT2)
U206
U202
CIRCUIT
R232
0 1
13M_CLK
4
(GPIO_12) _MIDI_RST
30
ADD00
31
_RD
29
(NAUXCS1)
_MIDI_CS
5
28
_WR
3
(GPIO_37) _MIDI_IRQ
27
DATA08
26
DATA09
25
DATA10
24
DATA11
23
DATA12
22
DATA13
21
DATA14
20
DATA15
R224
2V8_MV 3.3K
6
9
32
7
8
C226 C227
1u 1u
C219
(SPOUT1)
Figure 4-18
MIDI (40POLY)
C217
U202
0.1u
YMU762C-QZE2
11
CLK1 HPOUT_R
R216
10
C218
_RST HPOUT_L 30K
0.01u
A0
R217
12
_RD EQ1
33K
_CS
13
NC EQ2
_WR C231
R218
_IRQ 82K 390p
14
D0
EQ3
2
D1 LED
19
D2 MTR
D3
D4
17
D5 SPOUT1
D6
D7
18
PLLC SPOUT2
VBAT
C219 C220
VREF
47p 47p
15
SPVDD
IOVDD
C221
VDD 1u
16
VSS SPVSS
4. TROUBLE SHOOTING
Soldering Check
SPK_P_SM
MAX4684EBC_T
R219
0
R220
0
RCV_P
RCV_N
- 77 -
VBAT
U206
C4 C2
SPK_RCV_SEL (GPIO_6)
NO1 IN1
A4 A2
NO2 IN2
C1 C3
NC1 COM1 SPK_RCV_P
A1 A3
SPK_RCV_N
NC2 COM2
C225 R225
1u 100K