LG KS20 Operating Instructions Manual page 101

Schematic of the Bluetooth Block
TP4
ISCA TYPE
SNGF0017401
ANT400
C410
FL400 LFB212G45SG8A166
GND3 FEED IN OUT
GND2 GND1 GND1 GND2
33p
SNGF0022801
C412
10OL21C7AJ00005
NA
L405
10nH
C414 1000p
FM_ANT
ELCH0012503
TP3
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
C411 2.2p
L400 L401
3.3nH NA
C415
R406
47p
L402
100nH
C417
C416
47p
C418
VREG_FM_1.5V
L403
FM_R
56 nH
FM_L
BT_32KHz
FM_IRQ
X400
26MHz
4 3
1 2
WLAN_ACTIVE
TSX-3225_26MHZ
EXXY0024401
BT_HOST_WAKEUP
C422 C423 BT_WAKEUP
10p 10p
BT_ACTIVE
BT_PRIORITY
BT_PCM_OUT
BT_PCM_IN
BT_PCM_SYNC
BT_PCM_CLK
R408 NA
VBT_2.6V
C426
0.1u
nBT_RESET
4. TROUBLE SHOOTING
BLUETOOTH_Broadcom
150K H2 F7
RES UART_CTS_N
F1 C9
RFIOP UART_RTS_N
G1 J9
RFION UART_RXD
K10
UART_TXD
NA
D4
FMPLLCAP
D1 J6
FMRF_INP TM3
C1 F6
FMRF_INN TM2
A3 J7
FMVCO_LP TM1
A2 K7
FMVCO_LN TM0
0.1u
A1
FM_CVAR
K6 D5
AUDIOL VREG_CTL
K5 B5
AUDIOR VREG_BT
J5 A5
AUDIOGND VREGFM_DAC
A6
VDDR5V
K2 B6
XTALP VDDR3V
K3 K8
XTALN U403 VDDO18_1
B4 A8
LPOIN VDDO18_2
BCM2048SKUFBG
F9
VDDO18_3
D10 G5
GPIO7 VDDC1
B8 D9
GPIO6 VDDC2
G6 G7
GPIO5 VDDC3
E6 A7
GPIO4 VDDC4
G9 J10
GPIO3 VDDC5
F10 E1
GPIO2 VDDRF1
H9 E2
GPIO1 VDDRF2
H10 K1
GPIO0 VDDPLL
E7 J3
A_GPIO7 VDDXO
B7 J1
A_GPIO6 VDDLO
K9 A4
A_GPIO5 VDDFM1
E9 B1
A_GPIO4 VDDFM2
TP402 A10 B3
A_GPIO3 VDDFM3
B10 J4
TP403
A_GPIO2 VDDFM4
TP404 C10 K4
A_GPIO1 VDDFM5
TP405 B9 A9
A_GPIO0 VDDO33_1
E10
VDDO33_2
D6 J8
RST_N VDDO33_3
D400
PG05DBTFC
- 103 -
TP1
BT_UART_RTS
VBT_2.6V TP2
BT_UART_CTS
BT_UART_TXD
BT_UART_RXD
R407
NA
BT_REG_CTL
FB400
VREG_BT_1.5V
SFBH0008101
C421 1.8p
VREG_FM_1.5V
C424 C425
0.1u 1u
VBT_2.6V
LGE Internal Use Only
VREG_BT_1.5V
VREG_FM_1.5V
VBT_CORE_2.6V