Table of Contents
Advertisement
10-2-5. PCS1900 Receiver
Continuous RX ON
RF Input : 698CH
AMP : -50dBm
Normal Condition Catch the
channel
Check pin #8 of
PAM100 ≥ -55dBm
Check pin #4 of
PAM100 ≥ -60dBm
Check pin #32,33 of
U200 ≥ -65dBm
Check VDDA pins of
U200 ≒ 2.65V
Check the pin #7 of
U200 = 19.2MHz
Check the pin #10,11,12,13 of
U200 Vp-p=160mV
GSM Receiver is O.K?
YES
YES
YES
NO
YES
YES
YES
YES
YES
YES
END
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
NO
Check soldered status of
ANT, C102, C101, L101
NO
Resolder or Change
RFS100, L102, C100
Check PAM100
pin #1 : High &&
pin #27, 28 : Low ?
NO
Resolder or change UCP300
NO
Check soldered status of
L107, L108, L109, L110
NO
Resolder or change PMIC pin #27, #28
NO
Resolder or Change TCXO100
NO
Resolder or Change U200
NO
GSM RX path component
resolder or change
10-28
Flow Chart of Troubleshooting
YES
Resolder or Change
PAM100
C107, F100
and L400
Advertisement
Table of Contents
