Nokia 6680 RM-36 Service Manual page 229

RM-36
RF Troubleshooting and Manual Tuning Guide
5. When the values have been written to the phone memory, click Next to change to the next band.
6. When all bands have been tuned, click Finish and Close to end the tuning procedure.
Next action
Tuning sliders should be close to the center of the scale after the tuning and within the limits specified in the
following table. If they are not within the limits, check Tx IQ quality manually.
GSM900
I DC offset / Q DC
offset
Ampl
Phase
GSM1800/GSM1900
I/Q DC
Ampl
Phase
Issue 1
Min
-6
-1
85
-6
-1
95
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Typ
-4 4
0
90
0.5
0
100
Nokia Customer Care
Max
6
1
95
6
1
110
Unit
dB
dB
dB
dB
dB
dB
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