![Samsung GT M7603 Service Manual Download Page 53](http://html.mh-extra.com/html/samsung/gt-m7603/gt-m7603_service-manual_340692053.webp)
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Flow Chart of Troubleshooting
9-34
Check RFS100
pin#
1≥
-65dBm ?
9-14-1. GSM850 Receiver
Band : GSM
CELL POWER : -50dBm
Channel : 190Ch
NORMAL CONDITION
catch the channel?
Check ANT contact ?
NO
YES
Re-solder or change RFS100
NO
YES
Re-solder or change U101
NO
Check U101
pin# 12,13
≥
-65dBm ?
YES
Re-solder or change OSC200, C272/C279
NO
Check
TCXO CLOCK
19.2MHz @ C272
YES
Check U202?
Change or re-solder U202
NO
YES
UCD300
CHECK!!