User Guide

SAMSUNG Proprietary-Contents may change without notice
SGH-E316 Flow Chart of Troubleshooting and Circuit Diagrams
5-13
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2.RF
1. GSM RX
NORMAL CONDITION
catch the channel?
F402 CHECK
pin8 ≥ 65dBm ?
F402 CHECK
pin2, 3 ≥ 65dBm ?
U403 CHECK
pin20,21 ≥ 65dBm
U403 check
pin 8,9, 14, 30, 32
:clean 2.8V
NO
YES
check
C426, C427, L400 contact ?
CON1
resolder or change
F402
resolder or change
C433, L401, C435
resolder or change
U102 Pin A13, C125
check or resolder
CONTINUOUS RX ON
RF INPUT : 189CH
AMP : -50dBm
CHECK
U102
NO
YES
NO
YES
NO
NO
YES
YES