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5-12 GSM Transmit
5-21
Tx On (level : 5)
U602
Yes
Pin 8
No
U602
Yes
Pin 5
No
U607
Yes
Pin 4
No
U608
Pin 1
No
U610
Yes
Pin 1
No
U610
Yes
Yes
U612
At 1150~1185MHz,
No
Pin 10
At CH 1080MHz,
Pin 23
Yes
U605
No
Pin 17, 18, 19, 20
Yes
Check U605
No
Yes
Resolder
U501
Resolder
U600
Check
VC1 : L
VC2 : H
No
Resolder
U607, C608
Check
Yes
U608 : +VBATT
Pin 2 (APC)
OK?
Resolder of Change
C651, R607, R608, R609
Resolder or Change
U610
Resolder
U605, U612
Resolder
OneC(U501)
Resolder
U605 (Pin35, 38)
Yes
Change or Resolder
U602
Check
Ant. S/W, Control Circuit
Yes
Resolder or
Change U608
No
Check +VBATT
or APC Control
Flow chart of trouble shooting
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