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4. TROUBLE SHOOTING
4.9 Speaker & Receiver Trouble
Check Points
-Speaker/Receiver Solder contact
-Audio amp soldering
TP1(R202), TP2 (R208) :SPK path
-> Audio signal Check
TP3 (R112), TP4 (R113) : RCV path
-> Audio signal Check
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
TP4
TP3
TP2
TP1
TEST POINT
CIRCUIT
Figure 3-10-3 Speaker/Receiver Interface
C211
C207
47p
47p
VBAT
C206
47p
DNI
C212
C213
DNI
VO+
B3
VO-
A1
B1
_SHUTDOWN
TPA6205A1ZQVR
U200
BYPASS
C1
GND
B2
C2
IN+
IN-
C3
A3
VDD
C204
220n
0
R209
FB200
R208
4.7
R200
20K
220n
C205
C214
47p
R210
100K
C215
47p
C209
2.2u
5.1K
R203
DNI
C200
DNI
C201
0.1u
C216
R202
4.7
47p
C210
C208
1u
5.1K
R204
R205
0
R201
20K
SPK_P
SPK_N
SPKNA
SPKPA
SPK_EN
R113
0
EARN
H2
EARP
J2
FML
100nH
L101
0
R112
L100
100nH
EAR_N
EAR_P
TP 1
TP 2
TP 3
TP 4
Содержание CP150
Страница 1: ...Service Manual Model CP150 Service Manual CP150 Date August 2008 Issue 1 0 Internal Use Only ...
Страница 117: ...Note ...
Страница 118: ...Note ...