User Guide

NPL-4/5 Company confidential

Troubleshooting Instructions Nokia Customer Care

Receiver Verification and Troubleshooting

General instructions for RX troubleshooting

Connect the phone to a PC, which has Phoenix Service Software and a dongle installed,

using either

• Repair jig and DAU-9S (RS232) cable or

• DAU-9T cable (RS232) or

• DKU-5 cable (USB)

Connect the phone to a power supply (DC voltage: 4.0V, max. current: 3A) and an RF sig-

nal generator. Switch the phone on.

Start Phoenix Service Software and open FBUS connection.

- Select → Scan Product (Ctrl-R)

Wait until phone information (NPL-4 or NPL-5) is shown in the lower right corner of the

screen.

Follow the instructions below.

Measuring RX I/Q Signals using RSSI Reading

- Start Phoenix Service Software and open FBUS connection.

- Select → Scan Product (Ctrl-R)

Wait until phone information is shown in the lower right corner of the screen.

- Set operating mode to local mode

- Select → Testing → RF Controls

- Select → Band → GSM 850 or GSM 900 or GSM1800 or GSM1900

Active unit → RX

Operation mode → Burst

RX/TX Channel → 190 or 37 or 700 or 661

- Select → Testing → RSSI reading

In the RSSI Reading window the “measuring mode” shall be set on Sum vector and the

“reading mode” on Continuous.