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LG Manuals
Cell Phone
U250
Service manual
LG U250 Service Manual page 34
Lg cell phone user manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
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Bluetooth
RF Module
GSM Block
GSM
TX SAW
GSM
PAM
GSM1800/1900 Tx
GSM900 Rx
GSM1800 Rx
GSM1900 Rx
WCDMA Block
Front
End
Module
WCDMA
COUPLER
PAM
WCDMA2100 Tx
Duplexer
WCDMA2100 Rx
AntSW Logic
PM6650
-2M
VCTCXO
GSM900 Tx
GSM
VCO
RTR6275
WCDMA
TX SAW
HDET
WCDMA
VCO
WCDMA
RX SAW
Figure 1.10 Simplified Block Diagram
- 35 -
3. TECHNICAL BRIEF
USB
MAIN LCD
1.3M CAM
MSM6245
VGA CAM
U-SIM
NAND, SDRAM
FLASH
KEYPAD
SPK/RCV
MIC
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Table of Contents
Troubleshooting
TROUBLE SHOOTING
72
Power ON Troubleshooting
93
Charger Troubleshooting
95
USB Troubleshooting
98
SIM Detect Troubleshooting
99
Camera Troubleshooting
101
Keypad Backlight Troubleshooting
104
Main LCD Troubleshooting
105
Troubleshooting Download Errors
128
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