Cell And Amps Band Tx Probe Points - Nokia RM-11 Series Troubleshooting Manual

CC Technical Documentation

Cell and AMPS Band Tx Probe Points

Use PDM settings from previous section. Following are the approximate power levels you
should expect for Cell band (Channel 384):
1. C677 Output of N601, Input to the N603 driver
Probed power ≅ -3dBm (If not, then replace N601)
2. Pin 6 of N603 driver is the output (Gain ≅ 14dB)
Probed power ≅ +11dBm (If not, then replace N603)
3. C801 Output of the Tx Saw filter (Loss ≅ 1dB)
Probed power ≅ +10dBm (If not, then replace filter)
4. R801 Output of Cell PA (use 10dB pad on probe or just sniff part)
Probed power ≅ +21dBm (If not, then replace Cell PA)
5. C811 IREF into Cell PA should be ≅ 2.7V (If not, then trace back to N601 and then
to BB)
Issue 2 09/2005
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© 2005 Nokia Corporation
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