Samsung SGH-E200 Service Manual - Page 53

GSM Transmitter

Get Samsung SGH-E200 PDF manuals and user guides View all Samsung SGH-E200 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 53 highlights

9-13. GSM Transmitter Flow Chart of Troubleshooting TX ON (5Level) Yes F100 Pin13 >= 20dBm Yes F100 pin10 >= 18dBm Yes PAM100 pin12 >= 18dBm Yes PAM100 pin18 = 1V Yes Check UCP200 END No Resolder RFS100,C103,L106 No Check F100 No pin9=L, pin11=H(2.6V) Yes No Resolder or Change PAM100 Check ANT Switch control circuit Change or Resolder L101,C111,C121 No Check +VBAT or PAM control signal No U101 pin 11,12 16,17,32,33>=2.8V No Check & Resolder RFOLP signal, RF13MHz, RF PSU Part Yes Resolder U101 9-21 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
9-21
9-13. GSM Transmitter
U101 pin 11,12
16,17,32,33>=2.8V
Yes
Resolder U101
Check UCP200
END
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Check & Resolder RFOLP
signal, RF13MHz,
RF PSU Part
Check +VBAT or PAM
control signal
Yes
U101 pin 4,5,6,7
>= 1V
Resolder or Change PAM100
Check ANT Switch
control circuit
Change or Resolder
L101,C111,C121
PAM100 pin18
<= -11dBm
PAM100 pin12
>= 18dBm
F100 pin10
>= 18dBm
Check F100
pin9=L,
pin11=H(2.6V)
TX ON (5Level)
Resolder RFS100,C103,L106
F100 Pin13
>= 20dBm