User Guide

6015/6015i/6016i/6019i (RH-55), 6012 (RM-20)

Troubleshooting - RF Nokia Customer Care

General Troubleshooting

Use the following steps to troubleshoot some common issues, such as low transmitter

power, a faulty receiver, or a phone that cannot make a call.

TX Power Low

If TX power is low, use Phoenix to turn on the transmitter in Local Mode and check the

following:

1. Perform a visual inspection of the PWB under a microscope to check for the

proper placement, rotation, and soldering of components.

2. Look for the presence of a CDMA modulated signal on a spectrum analyzer at the

correct frequency.

• If a signal is present but off-frequency or distorted, check the synthesizer.

Most likely, one of the synthesizers is not locked or the VCO has no output

signal.

• If a signal is not present, or present but low in amplitude, use check the

probing diagrams to determine where in the chain the fault occurs.

3. Check that the AGC PDMs are set for the desired TX power and ensure the AGC

voltages are correct.

4. Check the synthesizers for proper frequency and amplitude.

5. Ensure that the power supplies to the transmitter have the correct voltage.

Receiver Not Working Properly

If the receiver is not working properly, turn it on in Local Mode and check the following:

1. Turn on receiver with Phoenix and inject a signal.

2. Check the AGC PDM.

3. Perform a visual inspection of the PWB under a microscope to check for the

proper placement, rotation, and soldering of components.

4. Measure signal levels at various points in the chain and determine where in the

chain the fault lies.

5. Check the LOs for proper frequency and amplitude.

6. Ensure power supplies to receiver have correct voltage.

Phone Cannot Make a Call

Verify the following if the phone cannot make a call:

1. The phone is in Normal Mode (i.e., the phone is searching for a signal, net server

is on).

2. The Preferred Roaming List (PRL) is loaded into the phone.

3. The phone is tuned and has passed tuning. (Read the tuning parameters using the

batch tune component in Phoenix; an untuned phone has all zeros in the tuning

file.)