Sharp SGH-C130 - Manual (Page 52)

SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
10-18
This Document can not be used without Samsung's authorization
PAM100 CHECK
pin12 ≥ -65dBm ?
10-2-2. DCS RX
CONTINUOUS RX ON
RF INPUT : 698CH
AMP : -50dBm
YES
①
NORMAL CONDITION
catch the channel?
CHECK
ANT contact ?
U102
pin 12,13,25,26,27:
2.8V ?
PAM100 CHECK
pin20 ≥ -65dBm ?
U102 CHECK
pin21,22 ≥ -65dBm ?
PAM100,RFS100
resolder or change
PAM100
resolder or change
C117,C118,L105
resolder or change
U107 pinA13, C172
change or resolder
U102 CHECK
pin 30,31 :
26MHz ?
Vp-p : 950mV?
OSC100
change or resolder
U102
resolder or change
U107 CHECK!!
U102
pin 4,5,6,7 Vp-p
: 120mV ?
NO
YES
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
③ ②
④ ⑤
⑥
⑦
⑧
F102 CHECK
pin3,4 ≥ -65dBm ?
F101
resolder or change
YES
NO