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5-15 DCS Transmit
Tx On (level : 0)
U706
Pin 8
°√
25 dBm
U706
Pin 3
°√
25 dBm
U707
Pin 5
°√
25 dBm
U707
Pin 8
°√
0 dBm
U602
Pin 5
°√
10 dBm
U602
Pin 3
°
¬ 2.5 V
Pin 5
°√
2.8 V
Pin 3 = 0.5~2.5 V
Resolder
U708
Check
VC1 : H
VC2 : L
Change or Resolder
U706
Resolder
U702, L706
Resolder or Change
C641, R703, R704, R705, C706
Resolder
U400, U502, U503
U504, U602
U601
pin 30, 47
°√
-10 dBm
Resolder U501
U601
Pin 17, 18, 19, 20
°√
40 mV
Resolder
OneC(U400)
Check U601
Pin 38, Pin 35
°√
2.5 V
Resolder
U601 (Pin35, Pin38)
Resolder
U400
No
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Check
Ant. S/W, Control Circuit
Check
U707 : +VBATT
Pin 2 (APC)
OK?
Resolder or Change
U707
Yes
Check +VBATT
or APC Control
No
Exploded Views and Parts List
5-23