LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
- 128 -
Schematic of voice path
FB502
FB503
U504
C562
R522
C578
R529
PQ
PQ
R524
68
SVSS
16
_SHDN
C1N
4
2
C1P
INL+
15
INL_
14
7
INR+
INR_
8
OUTL
12
OUTR
10
3
PGND
PVDD
1
5
PVSS
P_G
17
SGND
6
13
SVDD1
9
SVDD2
11
U504
MAX9722BETE
4.7u
C565
C577
1u
R525
68
600
FB503
FB502
600
0.22u
C578
R522
15K
15K
R529
1u
C570
PRSB6.8C
C574
C573
PRSB6.8C
1u
C566
C562
0.22u
MIDI_EAR_R
MIDI_EAR_L
MIDI_3.3V
HP_AMP_EN
HP_EAR_L
HP_EAR_R
U504
Содержание U990
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Страница 201: ... 202 LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes ...
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