Infrared Data Association Trouble - LG T5100 Service Manual

3.16 Infrared Data Association Trouble

DBB
(CALYPSO)
Infrared Signal Flow
- Infrared is enable by SD
- TX_IrDA,RX_IrDA,SD_IrDA signals from DBB
Check Points
- Check the power supply.
- Check the soldering of Components
- Check the IrDA Transceiver
Trouble Shooting Setup
- Enter the engineering mode.
- Go to menu 'Baseband
Trouble Shooting Procedure
- Check the SD,TX, RX signal.
- Check the soldering.
- Check the IrDA Transceiver.
3. BASEBAND PART TROUBLE SHOOTING
Block Diagram
TX_IrDA
UART
RX_IrDA
IrDA
SD_IrDA
Figure 45. IrDA Block Diagram
IrDA Test'
- 69 -
VBAT
R416
IrDA
2V8_RIO
2V8_RIO
SD_IrDA
Rx_IrDA
Tx_IrDA
R416
Figure 46. IrDA