Receiver & Speaker Trouble - LG GD310 Service Manual

5.6 Receiver & Speaker trouble
Check Points
-Speaker contact
-Audio amp soldering
BB_SND_R
BB_SND_L
FM_SND_R
FM_SND_L
2V11_RTC 2V9_VFM VBAT
LED_CNT
_LED_RESET
VIB_EN
LED_INT
LCD_IF1
LCD_IF2
DIF_D0
DIF_D1
DIF_D2
DIF_D3
DIF_D4
DIF_D5
DIF_D6
DIF_D7
LCD_BACKLIGHT_EN
_DIF_WR
DIF_RD
DIF_MAIN_CS
DIF_CD
DIF_VSYNC
LCD_ID
_DIF_RESET
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
C249
2.2U
C258
1U
C247 1U
C238 1U
C255 1U
C231 1U
C200 SDA
1U SCL
R211 2.2
EAR_P
R218 2.2
EAR_N
VBAT 2V8_CAM_A 2V85_CAM
CN102
1 60
2 59
3 58
4 57
5 56
6 55
7 54
8 53
9 52
10 51
11 50
12 49
13 48
14 47
15 46
16 45
17 44
18 43
19 42
20 41
21 40
22 39
23 38
24 37
25 36
26 35
27 34
28 33
29 32
30 31
GB042-60P-H10-E3000
C108
0.1uF
VBAT VBAT
R240 R241
0 0
C225 C230
1U 2.2U
A4
C1N
A5 A1
C1P HPR
A2
HPL
D1
INA2
D2
U200
INA1
MAX9877AEWP_TG45
C1
INB2
C2 D5
INB1 OUT+
B2 B5
BIAS OUT-
B3
SDA
C3
SCL
D4
RXIN+
B4
C259
RXIN-
27P
R235
0
SDA
SCL
CAM_LDO_EN
CIF_PD
CIF_RESET
CIF_SCL
CIF_SDA
CIF_PCLK
CIF_MCLK
CIF_HSYNC
CIF_VSYNC
CIF_D0
CIF_D1
CIF_D2
CIF_D3
CIF_D4
CIF_D5
CIF_D6
CIF_D7
SPK_RCV_P SPK_RCV_P
SPK_RCV_N
SPK_RCV_N
- 77 -
5. TROUBLE SHOOTING
HSO_R
HSO_L
SPK_RCV_P
SPK_RCV_N
C211
27P
SPEAKER
CN104
1
L110 33nH
2
L111 33nH
C106
C107
DNI
DNI
LGE Internal Use Only