Samsung SGH-S108 Service Manual page 27

9. RX_DCS
CONTINUOU S RX ON
RF INPUT : 698CH
AMP : -50dBm
NORM AL
CONDITION
YES
F1002 CHECK
pin#2 ≥ 65dBm ?
YES
F1002 CHECK
pin#10 ≥ 65dBm ?
YES
F1006 CHECK
pin#4,#6 ≥ 65dBm ?
YES
U901 CHECK
pin#17,#18 ≥ 65dBm
YES
U 901
pin #12,#13≥
20dBm ?
YES
U901 CHECK
pin#14,#23,#26,
#32
= 2.85V?
YES
U 901 pin#3,#4
Vp-p = 240mV?
YES
U 901
pin#1,#2
Vp-p=250mV?
YES
U900 pin
2,#3,#4,#5
Vp-p =100mV ?
YES
NO
Check soldered s tatus of
L1000,C1001,C1002
NO
solder again or change
NO
s older again or change
NO
s older again or change
NO
C1014,C1017,L1002
s older again or change
NO
U902
CHECK
pin
#25,#28=3V?
YES
U902 CHECK
pin#7=13MHz ?
Vp-p=860mV?
YES
U902
change or solder again
NO
U100 pin#46, C114
check or solder again
NO
U900 CHECK
pin#6,
#20=2.8V?
YES
U900
solder again or change
NO
U901
solder again or change
NO
CHECK
U700
SAMSUNG Proprietary-Contents may change without notice
SGH-S108 Exploded view and its Part list
CON1
F1002
L1004,F1006
NO
U100, pin39 , C116
check or solder again
NO
OSC801 CHECK
pin#3=13MHz ?
Vp-p=950mV?
solder again
NO
2-9
NO
YES
OSC801 change or solder
C808
NO
OSC801
CHECK
pin#4 =
YES
again