- 100 -
4. TROUBLE SHOOTING
4.10 Bluetooth trouble
Bluetooth supplied voltages are generated by the PM6650.
Those signal’s path are : PM6650
→
VREG_MSMP_2.7V and VREG_BT_2.85V is asserted
→
TCXO_BT 19.2MHz is asserted
→
Bluetooth ON
→
BT_TX_RX_N is High
→
BT serial interface
control is operated (SBST / SBCK / SBDT)
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
[Fig. 4.8] Schematic of Bluetooth Interface
NA
L117
C153
DNI
TC7SH04FS
U102
VREG_BT_2.85V
C148
0.01u
1000p
C147
C177
100p
VREG_BT_2.85V
smd_1608h_9_r
2.2u
C167
1u
C179
R114
100K
0
R115
C142
0.01u
R110
100ohm
1000p
C159
12
SBDT
SBST
4
5
SYNC_DET_TX_EN
3
VCC_OUT
14
VDD_BAT
VDD_INT
2
VDD_MSM
10
7
XTAL_IN
ANT
16
9
CLK_REF
1
GND1
GND2
6
8
GND3
GND4
15
17
PGND1
PGND2
18
19
PGND3
PGND4
20
RX_BB_TX_BB
13
SBCK
11
M100
LBRQ-2B43A
8
OUTPUT
3
VCC
4
1
VCONT
X100
DSA321SCE-19.2M
GND
2
5
NC1
NC2
6
7
NC3
NC4
1000p
C168
VREG_TCXO_2.85V
C144
1000p
1u
C166
C180
C141
0.01u
100p
FEED
NC1
NC2
OUT100
VREG_MSMP_2.7V
C143
1000p
C178
0.1u
C140
0.1u
2.2nH
C155
BT_TX_RX_N
TCXO_BT
BT_DATA
BT_CLK
BT_SBCK
BT_SBDT
BT_SBST
TCXO_PM
RTR6275_TCXO
TRK_LO_ADJ
TCXO_BT
Pin #4
Pin #11
Pin #12
Содержание KF700
Страница 1: ...Service Manual Model KF700 Service Manual KF700 Date May 2008 Issue 1 1 Internal Use Only ...
Страница 157: ... 158 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 167: ... 168 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 193: ...Note ...
Страница 194: ...Note ...