LG SPH2B-P Service Manual

3-5
C268
C222 C225 C223 C224
FB261
R139
R125
R120
R138
C221
R116
1
C769
C107
R134
R131
R127
R123
R118
R112
R108
R106
R104
172.04M-->221BEAD
R132
R133
R137
R135
R122
R141
R124
R126
R128
R114
R119
R113
R105
R109
R103
R107
PN261
R121
R129
R111
E5
VSS33IS
B1
PGPA09
C1
PGPA10
C2
PGPA11
D2
PGPA12
D1
PGPA13
E1
PGPA14
E2
PGPA15
E4
PGPA00
F1
PGPB01
F2
PGPB00
G1
PGPB02
G2
PGPB03
F4
PGPB04
H2
PGPB05
G5
PGPD13
H1
PGPB06(Boot(0))
G4
PGPD14
J1
PGPB07(Boot(1))
H4
PGPD15
J2
PGPB08
J4
VDD12INT
J5
VSS12INT
K2
PGPB09
K4
PGPC12
K1
PGPB10
L4
PGPC13
L5
PGPC14
L1
PGPB11
L2
PGPB12
M4
PGPC15
M2
M1
PGPB14
N4
PGPC00
N2
PGPC01
P2
PGPC02
P1
PGPC03
R1
PGPC04
R2
PGPC05
T2
PGPC06
P4
VDD33IO
N5
VSS33IO
T1
PGPC07
P5
PGPE00
U1
PGPC08
P6
PGPE01
U2
PGPC09
P7
PGPC10
U3
PGPE03
N7
PGPE03
T3
PGPC11
P8
PGPE04
U4
VDD12CORE
T4
VSS12CORE
U5
VDD33USB20
T5
PUID20
T6
PUVBUS20
T7
VSS33USB20
U7
PUDP20
T8
PRTUNE20
U8
PUDN20
T9
VSS33USB20
P9
VDD12USB20
N9
VSS12USB20
U9
VDD33OSC
U10
PXI
U11
PXO
U12
VSS33OSC
T10
PDD12ALIVE
N1
PGPB15
U6
VDD33USB20
ONE POINT REPAIR GUIDE
4. BT FUNCTION DOESN’T WORK
4-1. BT Module
4-1-1. Solution
Replace IC101, PN261 MAIN board.
4-1-2. How to troubleshoot (Countermeasure)
1) Please voltage check 3.3 V of PN261 pin1.
If 3.3 V voltage doesn’t come out, Replace IC601.
2) Please check IC101 pin L1, L2, K1, K2, M2, P7, N7 signal and Replace it.
3) Please check PN261 pin2, 3, 4, 5, 7, 9, 10 signal and Replace it.
4) Check BT Module.
4-1-3. Service hint (Any picture / Remark)
< MAIN board top view >
< Schematic point >
0V
0V
( )
21V
0036A
option
21V
CHECK
Assy No
0036B
P/N
:
6870S
-
0036A
SH2 PV [MAIN]
2015. 11. 27
Q754
D751
C926
C744
R935
R936
C922
C921
7
54
4
R721
R716
R717
C705
R125
R129
R123
C206
R662
R661
RA100
C144
C142
R757
D752
5
0
C726
C720
C722
C735
C712
C928
R203
R136
R152
R664
ZD622
R19J
C128
RA102
RA104
RA101
C143
C725
RA103
C605
R769
R767
R772
R758
C723
C703
R733
R704
C708
R701
R703
C927
C924
R938
R138 R139
R131
R132
R133
R146
R128
R106
R107
R108
R109
R105
R111
R104
R217
R221
R222
R167
R171
R180
R19B R19A R19C R19D
R19H
R189
C148
ZD661
R665
FB654
Q751
7
27
7
46
C761
C757
PN702
C174 C175 C176 C177
10
PN506
Q752
C721 C737
PN701
C701
C704
IC921
PCM1808
R137
R121
R126
R124
R235 R917 R234 R232
R237 C231 R236 R233
C222
C103
R103
X201
24.576MHz(SX-1)
CS8422
IC201
R19K R19G R19Q R19P
C12 C12
R151
C145
W25Q32FVS
IC105
Q661
R715
R714
R912
R218
R223
R224
X101
C601
R231
C223
PN507
C12
10
PN261
Bt Module
L701
R19ER19F
C153
DOWNLOAD JIG
PN601
POWER
L702
R
E
K
15
110
A
5
IC101
MLC3730S
IC101
IC101
PN261
PN261
PN261
PN261

LG SPH2B-P Specifications

General

Brand	LG
Model	SPH2B-P
Category	Speaker System
Language	English