Samsung SGH-S108 Service Manual page 29

11. RX_PCS
CONTINUOUS RX ON
RF I NPUT : 62CH
AMP : -50dBm
NORMAL CONDI TION
catch the channel?
YES
F1002 CHECK
pin#2 ≥ 65dBm ?
YES
F1002 CHECK
pin#9 ≥ 65dBm ?
YES
F1005 CHECK
pin#4,#6 ≥ 65dBm ?
YES
U901 CHECK
pin#17,#18 ≥ 65dBm ?
YES
U901
pin #12,#13≥
20dBm ?
YES
U901 CHECK
pin#14,#23,#26,#32
= 2.85V?
YES
U901 pin#3,#4
Vp-p = 240mV?
YES
U901 pin#1,#2
Vp-p=250mV?
YES
U900 pin
2,#3,#4,#5
Vp-p =100mV ?
YES
NO
Check soldered status of
L1000,C1001,C1002
NO
solder again or change
NO
solder again or change
NO
C1021,F1005
solder again or change
NO
C1015,C1019,L1006
solder 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
NO
U100, pin39 , C116
check or solder again
OSC801
NO
CHECK
pin#3=13MHz
?
YES
C808
solder again
NO
2-11
NO
NO
OSC801 CHECK
pin#4 = 2.85V ?
YES
OSC801 change or solder
again