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Flow Chart of Troubleshooting
9-28
PAM100 CHECK
pin17
≥
-65dBm ?
9-13. PCS RX
CONTINUOUS RX ON
RF INPUT : 661CH
AMP : -50dBm
YES
NORMAL CONDITION
catch the channel?
CHECK soldered
ANT contact
L101,C107,C108,L121,L100,C106,C112,C136
RFT100
pin 31 : 2.9V ?
PAM100 CHECK
pin14
≥
-65dBm ?
RFT100 CHECK
pin17,18
≥
-65dBm ?
PAM100,RFS100
resolder or change
PAM100
resolder or change
RFT100
resolder or change
UCD300 pin F3, C313,C314
change or resolder
RFT100 CHECK
pin 9,10
freq :26MHz ?
Vp-p : 380mV?
OSC100
change or resolder
RFT100
resolder or change
RFT100
pin 1,2,3,4 Vp-p
: 120mV ?
NO
YES
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
F101 CHECK
pin9,8
≥
-65dBm ?
F101
resolder or change
YES
NO
NO
PCS Receiver is O.K?
YES
END
NO
PCS RX path component
resolder or change