Samsung SGH SGH X200, Руководство по обслуживанию

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SGH-X200 Flow Chart of Troubleshooting
2-19
2-2-5. DCS/PCS Tx
CONTINUS TX ON CONDITION
TX POWER DAC : 560 CODE
APPLIED
CH : 698CH(DCS),
660CH(PCS)
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV : 10dBm
ATT : 20dB
Check U102
pin 6 : 2.8V ?
U100 pin 1 :
about 4~5dbm?
No
Check U102
pin 16 : about
2~3 dbm?
No
Check and
change
U201 , U107
Yes
No
Yes
Check and
change
CN100 ,
L100,L111
Yes
U102
check & change
No
Battery, U100
check & change
Yes
No
U100 check
Yes
No
Yes
No
U107 check
Yes
U100
change or resolder
U102 pin 12,13,
28,29 : 2.9V ?
No
U107
change or resolder
Yes
U102
change or resolder
U100 pin 7 :
3.7V ?
U100 pin 8 :
1.2V ?
U100 pin 12
:
about -5dbm?
U100 pin 6 :
3V ?
1
2
3
4
5
6
7
8
1
2
2
3
4
5
6
7
8
1
2
2
3
4 5
6
7
8
1
2
3
4 5 6
7
8
2