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9-2-3. PCS RX
NORMAL CONDITION
catch the channel?
YES
F700 CHECK
pin13 ≥ -65dBm ?
YES
F700 CHECK
pin1,2 ≥ -65dBm ?
YES
U701 CHECK
pin10,11 ≥ -65dBm ?
YES
U701
pin 34 : 2.9V ?
Pin1,13,22,32 : VBAT?
YES
U701 CHECK
pin 21 : 26MHz ?
Vp-p : 1.1V?
YES
U701
pin 35,36,37,38
Vp-p : 100mV ?
YES
U701
resolder or change
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NO
CHECK
R722
contact ?
NO
F700,L700,C700
resolder or change
NO
F700
resolder or change
NO
L706,L707
resolder or change
NO
Check the
U100, C110
(change or resolder)
NO
Check the
OSC 700
(change or resolder)
NO
U100
CHECK!!
9-12
Flow Chart of Troubleshooting
CONTINUOUS RX ON
RF INPUT : 650CH
AMP : -50dBm
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