LG U880 Service Manual page 65

3. TECHNICAL BRIEF
Handset main MIC BLK
Audio Amp for loud Speaker
SPK_AMP_EN
SPK_AMP_EN
SP0102BE3
5
G3
U505 4
PWR
3
G2
2
G1
1
OUT
C533
NA
Audio AMP
C507 0.022u
80.6K C1
R504
C509 0.022u
80.6K A1
HPL_R
R507
C2
C504 0.022u
80.6K C1
R505
C508 0.022u
80.6K
A1
HPL_L
R506
C2
MIC
MICBIAS
C538 C537
10u
47p
MIC1N
C536
0.022u C534
NA
0.022u C535
MIC1P
U502 TPA2010D1YZF
B1
IN- VDD
B2
PVDD
IN+
A3 R500 0
VO-
C3 R501 0
_SHDN VO+
C506
1u
U503 TPA2010D1YZF
B1
IN- VDD
B2
PVDD
IN+
A3 R502 0
VO-
C3 R503 0
_SHDN VO+
C505
1u
- 66 -
AMP_PWR
⇒
SPK_R+
Speaker
SPK_R-
AMP_PWR
SPK_L+
⇒
Speaker
SPK_L-