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SAMSUNG Proprietary-Contents may change without notice
SGH-D730 Flow Chart of Troubleshooting and Circuit Diagrams
2-
29
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2-2-6. PCS Transmitter
F603 pin 13
about
2~3dBm?
F603
pin 9,12 : 2.8V
U602 pin15
3~4dBm?
U500
check &
change
F603 / L607
check & change
CN600,C607,R601
check & change
U602
pin 3,17 : 3.7V
U500
check & change
U602
pin 1 :'HIGH'
U602
pin 18:
'HIGH'
U602
pin 20 :
1.2V ?
U602 pin 3
: -5dBm?
U602
change&resolder
U500
check & change
U600
pin9,32
2.8V
U600
pin8 13MHz
Vp-p :950mV
U600
change or
resolder
U600
pin4,5,6,7
1.7V
U600
check &
change
U500
change
U500
change or resolder
OSC400
pin 3 : 13MHz
Vp-p : 950mV
OSC400
pin 4 : 2.8V ?
U600
change or
resolder
U500
change or resolder
U600
change or
resolder
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
YES
YES
CONTINUS TX ON
CONDITION
MS TX level 12
CH : 660
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
NO
BATTERY, BATTERY CONNECTOR
check & change
1
2
3
4
6
7
5
8
9
10
11
12
13
14