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10-2-6. GSM900 TX - SLAVE
MS TX level 19, CH : 62, RBW : 100KHz, VBW : 100KHz, SPAN : 10MHz, REF LEV. : 10dBm
Check RFS600
Pin#2=2~5dBm
Yes
Check and Change
L606,R600,R602
No
PAM600 TX_EN
Pin #6 : 2.85V ?
Pin #3="LOW"
PAM600 MODE
Pin #2="HIGH"
PAM600 VRAMP
Check PAM600
Pin #7=-5dBm
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No
Yes
No
PAM600 VBAT
Pin #4 :3.8V
Yes
No
PAM600 BS
Yes
No
Yes
No
Pin #5 = H ?
Yes
No
Yes
END
10-23
Flow Chart of Troubleshooting
Check and Change
UCP700
Check the battery
block
Check and Change
UCP700
Check and Change
U600
Check and Change
U600
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