Table of Contents
Advertisement
SGH-E770 Flow Chart of Troubleshooting
2-2-4. EGSM TX
NO
F100 Pin#6
About 2~3 dBm?
YES
F100, C10
Check & Change
C100
= 3.7V?
Level of PAM101
Pin #30 is
1.2V?
YES
PAM101 pin#15
About -5 dBm?
PAM101 pin#45
High ?
Change PAM101
UCD100 Check
Pin#15,16,23,27,31
UCD100 Check
Pin #17 : 13MHz ?
Vpp : 1.1V?
NO
UCD100 Pin
#4, = 1.7V?
Change PAM101
Check UCP301
This Document can not be used without Samsung's authorization
F100
Pin#4 = High?
YES
Level of
NO
F100 Pin#2 is
4~5dBm ?
YES
F100
Check & Change
NO
Check the
Battery Block
YES
NO
UCP301 TXP OK ?
YES
YES
NO
NO
Check UCP301
YES
NO
2.8V ?
YES
NO
YES
YES
SAMSUNG Proprietary-Contents may change without notice
NO
UCP301
Check & Change
Continuous TX ON condition
TX Power Code : 500 code Applied
NO
Check
Check & Change
C17,18,114,152,UCP301
Check or resolder
NO
R118 = 13MHz ?
Vpp : 1.2V?
YES
C141, R118
resolder
CH : 62
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF. Level : 10dBm
ATT. : 20dB
UCP301
NO
R116 = 1.5V ?
YES
TCX101
Change or resolder
Advertisement
Table of Contents
