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Flow Chart of Troubleshooting
3-12
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PAM100
CHECK
pin12
≥
-65dBm ?
3-2.RF
3-2-1. EGSM RX
CONTINUOUS RX ON
RF INPUT : 62CH
AMP : -50dBm
NORMAL CONDITION
catch the channel?
CHECK
ANT
contact ?
U100
pin 13 : 2.8V ?
PAM100 CHECK
pin16
≥
-65dBm ?
U100
CHECK
pin21,22
≥
-65dBm ?
PAM100,RFS100
resolder or change
PAM100
resolder or change
C103,C108,L100
resolder or change
UCP300 pinA13, C316
change or resolder
U100 CHECK
pin 30,31
freq :26MHz ?
Vp-p : 380mV?
OSC100
change or resolder
UCP201
CHECK!!
NO
YES
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
F100 CHECK
pin3,4
≥
-65dBm ?
F100
resolder or change
YES
NO