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6. PCS Transmitter
F100 pin 13
about 2~3
dBm?
YES
CON101,
L105, C138
check & change
U102
pi n 42, 43 :
3.7V
U102
pin 40 :
'HIGH'
U102 pin 41
: 'HIGH'
U102
pin 45 : 1.2 V
U102 pin 37
about :
-5dBm?
U102
change &
resolder
CHECK
U301 pin A13, C311
change or resolder
U101
NO
pin4,5,6,7
1.7V
U301
U102
change
check &
change
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SGH-E610 Flow Chart of Troubleshooting and Circuit Diagrams
NO
F100
pin 9 : 2.8V
YES
U102 pin 31
3~4dBm?
NO
YES
U102
check &
change
NO
BATTERY, U301
check &
change
YES
NO
YES
U301
NO
check &
change
YES
NO
YES
NO
YES
U101
NO
pin9,32
2.8V?
YES
U101
NO
pin 8 13MHz
Vp-p :950mV
YES
YES
U101 change or resolder
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CONTINUS TX ON CONDITION
NO
U301
check &
change
NO
2-21
MS TX level 12
CH : 698
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
OSC101
NO
OSC101
pin3 :13MHz?
change or
Vp-p :
resolder
950mV
YES
U301 pin A13,
OSC101
NO
R101
pin 4 :
change or
2.8
resolder
YES
U101
change or
resolder
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