Samsung SGH-F860V, Руководство по обслуживанию

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Mobilchips
SGH-E860V Flow Chart of Troubleshooting
2- 29
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 F100
pin 2 : 2.8V ?
U100 pin2 :
about 4~5dbm?
No
Check F100
pin 1 : about
2~3 dbm?
No
Check and
change
U200 , U401
Yes
No
Yes
Check and
change
CN100, C109
Yes
F100
check & change
No
Battery, U100
check & change
Yes
No
U100 check
Yes
No
Yes
No
U401 check
Yes
U100
change or resolder
U101 pin 9 :
2.8V ?
No
U401
change or resolder
Yes
U101
change or resolder
U100 pin
2,6,17 :
3.7V ?
U100 pin 20 :
1.2V ?
U100 pin 15:
about -5dbm?
U100 pin18 :
3V ?