LG -A258 Service Manual page 68

CIRCUIT
1 pin
WAVEFORM
LGE Internal Use Only
BT_WAKEUP_HOST
Connect GND plane directly
Close to the 26MHz XTAL
X100 DSX321G-26M
BT_UART_RX
4 3
BT_UART_TX
1 2
26MHz
1 Pin
Figure 4.3.2 SIM 1 crystal circuit
Figure 4.3.3 26MHz output waveform
H10 USIF2_TXD_MTSR
BT_RESET_N
J9
H9
J10
A4
UART_TX
B5
UART_RX
A5
B4
K13
USB_DP
K14
USB_DM
B13
A13
- 68 - Copyright © 011 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
USIF2_RXD_MRST
USIF2_RTS_N
USIF2_CTS_N
USIF1_TXD_MTSR
USIF1_RXD_MRST
USIF1_RTS_N
USIF1_CTS_N
DPLUS
DMINUS
XOX
XO
Only for training and service purposes