User Guide

Nokia Customer Care RF Description and Troubleshooting

6235/6235i/6236i (RM-60)

Preliminary RF Troubleshooting

Verify the following if the mobile terminal cannot make a call:

• The mobile terminal is in Normal Mode (i.e., the mobile terminal is searching for

a signal, net server is on).

• The Preferred Roaming List (PRL) is loaded into the mobile terminal.

• The mobile terminal is tuned and has passed tuning. Read the tuning parameters

using the Read Parameters component in Phoenix. An untuned mobile terminal

has all zeros in the tuning file.

• The call box channel is set for a channel in PRL.

• The SID is correct and entered into the mobile terminal.

• The VCTCXO is centered as described in the "VCTCXO Manual Tuning" section on

page 48.

• The transmitter and receiver are working properly in Local Mode. See

"Transmitter RF Troubleshooting"onpage8 and "Receiver RF

Troubleshooting"onpage28 for detailed information.

RF Troubleshooting Equipment List

You will need the following equipment for RF troubleshooting:

• Computer with AMS version of Phoenix

• Agilent 8960 CDMA call box (or equivalent)

• Signal Generator

• Power Supply

• Digital Multimeter

• Diagnostic Test Jig (MJ-71)

• Spectrum Analyzer

• AMS RF Probe, AAS-10A (p/n0730306) or AAS-10B (p/n0730307)

• Oscilloscope

• RF Connectors and cables

• Optional High Impedance Probe