Sim Detect Trouble - LG MG210 Service Manual

4.14 SIM Detect Trouble

Block Diagram
DBB
SIM_PWRCTRL
Connection between SIM and DBB
• SIM_CLK, SIM_IO, SIM_RST
Check Points
• Contact between SIM and socket
- Soldering of SIM socket
Trouble Shooting Setup
• Insert the SIM into socket
- Connect PIF to the phone, and power on.
Trouble Shooting Procedure
• Check the power supply.
- Check the soldering of SIM socket.
- Check the SIM.
V_IO ABB
VRSIM
DBBSIO
SIM_IO
DBBSCK
SIM_CLK
DBBSRST
SIM_RST
10k
SIMCLK
S IMIO
SIM_CD
SIMRST
100k
J300
- 65 -
4. TROUBLE SHOOTING
V_SIM
10k SIM
VPP
CLK
IO
RST
150p 22p 0.1u