Troubleshooting Summary - Nokia RH-17 Series Troubleshooting - Rf

CCS Technical Documentation
126 TN LNA CELL LO LowGain
127 TN LNA CELL LM LowGain
128 TN LNA CELL ML LowGain
129 TN LNA CELL MD LowGain
130 TN LNA CELL MH LowGain
131 TN LNA CELL HM LowGain
132 TN LNA CELL HI LowGain
133 TN LNA CELL LO HighGain
134 TN LNA CELL LM HighGain
135 TN LNA CELL ML HighGain
136 TN LNA CELL MD HighGain
137 TN LNA CELL MH HighGain
138 TN LNA CELL HM HighGain
139 TN LNA CELL HI HighGain
140 NVD Write RF Params
141 NVD Write Non RF Params

Troubleshooting Summary

If TX power is low, turn on transmitter in local mode using Phoenix. Check:
1 Current (0.7 - 1 A for max power, mode and channel dependent),
2 Perform visual inspection of PWB under microscope to check proper placement,
rotation, and soldering of components.
3 Look for presence of TX signal on spectrum analyzer at the correct frequency. If
signal is not on frequency, check in 100 MHz span. If signal is present but off fre-
quency, check synthesizer. If signal is not present, or present but low in ampli-
tude, use probing Tables 1 through 7 to determine where in the chain the fault
occurs, with AGC PDMs set for known transmit power as listed in Table 1.
4 Check that AGC PDMs are set for desired TX power according to Table 1 and
ensure AGC voltages are correct.
5 According to Tables 2 and 3 (cell/AMPs), check the LOs for proper frequency and
amplitude.
6 Ensure power supplies to transmitter have correct voltage, as per Table 13.
Issue 1 04/2003
Nokia Corporation
Troubleshooting — RF
-601 4289
-601 4289
-601 4289
423 3777
-601 4289
-601 4289
-601 4289
3475 8365
3475 8365
3475 8365
4499 7853
3475 8365
3475 8365
3475 8365
Confidential
RH-17
Pass/Fail-
Test
Pass/Fail-
Test
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