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Flow Chart of Troubleshooting
9-2-5. DCS//PCS TX
U700 pin 14 :
about 29dBm?
Yes
①
F700,C700,L700,
CON701,L711,C739
check & change
④
U100
check or resolder
& BATTERY check
check or resolder
No
pin 11 : 2.8V ?
pin4,5: VBAT?
No
U700 pin2
about 5dBm ?
pin 1 : 2.9V ?
③
check & change
No
pin34 : 2.9V?
Pin1,13,22,32
pin
A13,C110
pin21 : 26MHz ?
Vp-p : 1.1V ?
No
pin35,36,37,38
U100
check or resolder
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No
F700
Yes
No
U700
Yes
Yes
No
U700
Yes
U100
U700
check
U701
: VBAT ?
Yes
No
U701
Yes
U701
100mV ?
Yes
U701
⑥
9-15
CONTINUOUS TX ON CONDITION
CH : 698CH(DCS) // 650CH(PCS)
TX POWER CODE: 520 CODE Aplied
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
U100
check & change
②
BATTERY
check & change
②
OSC700
⑤
check or resolder
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