Pcs Receiver - Samsung SGH-X810 Service Manual

9-2-3. PCS Receiver

CONTINUOS RX ON
RF INPUT : 698CH
Cell power : -50dBm
NORMAL CONDITION
c atch the channel?
F100 CHECK
pin13 ≥ -65dBm?
F100 CHECK
pin5,6 ≥ -65dBm?
U103 CHECK
pin16,17 ≥ -
65dBm?
U103 CHECK
pin9,32 : 2.8V
U103 CHECK
R114 :13MHz
U103 CHECK
pin 1,2,3,4,5,6,7:
Vp-p 100mV
PCS Receiver is ok?
END
NO
YES
NO
resolder or change
YES
NO
resolder or change
YES
NO
C104, C106, L101
resolder or change
YES
NO
U300 PIN A13, C314
resolder or change
YES
NO
resolder or change
YES
NO
resolder or change
YES
NO
PCS RX path component
resolder or change
1
CHECK
C102 contact
2
RFS100
3
F100
4
5
6
NO
R114
8
U103
9-21
Flow Chart of Troubleshooting
TCX100 CHECK
pin 4 : 2.8V
pin 3 : 13MHz
V p-p : 800mV
NO
7
TCX100
change