Samsung SGH-F860V Service Manual page 24

2-2 RF
2-2-1. GSM Rx
CONTINOUS RX ON
RF INPUT : 62CH
AMP : -50dbm
Normal condition
catch the
channel ?
Yes
Check F100
pin 6 ≥ -65
dbm ?
Yes
Check F100
pin 10,11 ≥ -65
dbm ?
Yes
Check U101
pin 20,21 ≥ -
65dBm ?
Yes
Check U101
pin 32 = 2.8V
Yes
Resolder or change
U200
No
Check ANT,
No
Resolder or change
No
Resolder or change
No
Resolder or change
No
Resolder or change
2-21
SGH-E860V Flow Chart of Troubleshooting
C112,144,L100
CN100, C109
F100
C114,115,L101
U401