4. TROUBLE SHOOTING
- 48 -
E. SIM Detect Trouble Shooting
SIM interface scheme is shown below.
SIM_IO, SIM_CLK, SIM_RST ports are used to communicate DBB with ABB and the Charge Pump in
ABB enables 1.8V/3V SIM operation.
SIM_CLK : SIM Card reference clock
SIM_PWCTRL : SIM Card power activation
SIM_RST : SIM Card async/sync reset
SIM_RnW : SIM Card data line direction
SIM_IO : SIM Card bi-directional data line
SIM_CD : SIM Card presence detection
• Connection between SIM and DBB
- SIM_CLK, SIM_IO, SIM_RST
• Check Points
- Contact between SIM and socket
- Soldering of SIM socket
• Trouble Shooting
- Insert the SIM into socket
- Connect PIF_UNION Jig to the phone, and Power on
SIM I/O CKTs
CLK
GND
I_O
RST
VCC
VPP
CN203
R226
20K
V_SIM
1u
C225
0.1u
C224
150p
C227
V_SIM
C226
150p
C223
22p
SIM_RST
SIM_IO
SIM_CLK
Summary of Contents for MG810c
Page 1: ...Date May 2006 Issue 1 0 Service Manual MG810c MG810d Service Manual Model MG810c MG810d ...
Page 3: ... 2 ...
Page 5: ......
Page 46: ...4 TROUBLE SHOOTING 45 WR CS ADSSSSS CS ADSSSSS WR ...
Page 52: ...4 TROUBLE SHOOTING 51 G 1 Speaker Receiver Trouble Shooting Common Path ...
Page 53: ...4 TROUBLE SHOOTING 52 G 2 Speaker Receiver Trouble Shooting Acoustic Path ...
Page 54: ...4 TROUBLE SHOOTING 53 G 3 Speaker Receiver Trouble Shooting MP3 AAC Path ...
Page 55: ...4 TROUBLE SHOOTING 54 G 4 Speaker Receiver Trouble Shooting FM Radio Path ...
Page 56: ...4 TROUBLE SHOOTING 55 G 5 Main Mic Path Trouble Shooting ...
Page 57: ...4 TROUBLE SHOOTING 56 G 6 Ear Mic Receiver Path Trouble Shooting ...
Page 58: ...4 TROUBLE SHOOTING 57 G 7 Ear Mic Mic Path Trouble Shooting ...
Page 59: ...4 TROUBLE SHOOTING 58 G 8 Vibrator Trouble Shooting ...
Page 60: ...4 TROUBLE SHOOTING 59 4 2 RF Part Troubleshooting A RF Receiving Path Trouble Shooting ...
Page 64: ...4 TROUBLE SHOOTING 63 E RF Receiving Path Trouble Shooting FEM 1 ...
Page 65: ...4 TROUBLE SHOOTING 64 F RF Receiving Path Trouble Shooting FEM 2 ...
Page 67: ...4 TROUBLE SHOOTING 66 H RF Transmitter Path Trouble Shooting ...
Page 73: ...4 TROUBLE SHOOTING 72 N RF Transmitter Path Trouble Shooting FEM 1 ...
Page 74: ...4 TROUBLE SHOOTING 73 O RF Transmitter Path Trouble Shooting FEM 2 ...
Page 84: ...6 Block Diagram 83 6 Block Diagram ...
Page 85: ... 84 ...
Page 96: ... 95 8 PCB LAYOUT ...
Page 97: ... 96 8 PCB LAYOUT ...
Page 98: ... 97 8 PCB LAYOUT ...
Page 99: ... 98 8 PCB LAYOUT ...
Page 100: ... 99 8 PCB LAYOUT ...
Page 101: ... 100 8 PCB LAYOUT ...
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Page 133: ...Note ...
Page 134: ...Note ...