Pcs Band Tx Probe Points - Nokia RM-11 Series Troubleshooting Manual

RM-11
Troubleshooting - RF

PCS Band Tx Probe Points

Use PDM settings from previous section. Following are the approximate power levels you
should expect for PCS BAND (Channel 600):
1. C 660 Output of N601, input to N602
Probed power ≅ -2dBm (If not, then replace N601)
2. C 627 Output of split-band filter (Z601)
(Gain ≅ 10.5dB – (filter loss 2.3dB) ≅ 8.2dB)
Probed power ≅ 7dBm (If not, then replace N601)
3. C802 Output of the Tx Switch (Loss ≅ 1dB)
Probed power ≅ +6dBm (If not, then replace switch)
4. C803 Output of PCS PA (use 10dB pad on probe or just sniff part)
Probed power ≅ +18dBm (If not, then replace PCS PA)
5. C809 IREF into PCS PA should be ≅ 2.7V (If not, trace back to N601 and then
to BB)
© 2005 Nokia Corporation
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PCS Duplexer
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PCS PA
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Issue 2 09/2005