Nokia RH-27 Series Guide

CCS Technical Documentation

RH-27 Series Transceivers

Issue 1 11/2003 Confidential ©2003 Nokia Corporation

Troubleshooting - FM Radio

RH-27

Troubleshooting - FM Radio CCS Technical Documentation

Page 2 ©2003 Nokia Corporation Confidential Issue 1 11/2003

Contents Page No

Troubleshooting - FM Radio.......................................................................................... 3

FM Radio Testing with Tomahawk Headset ...............................................................4

FM Radio Testing with UHJ Headset ..........................................................................5

CCS Technical Documentation Troubleshooting - FM Radio

RH-27

Issue 1 11/2003 Confidential ©2003 Nokia Corporation Page 3

Troubleshooting - FM Radio

The FM Radio circuits are located on the bottom of the PWB, near the Tomahawk con-

nector.

FM RadioFM RadioFM Radio

RH-27

Troubleshooting - FM Radio CCS Technical Documentation

Page 4 ©2003 Nokia Corporation Confidential Issue 1 11/2003

FM Radio Testing with Tomahawk Headset

1 Connect the Tomahawk headset (HDS-3) to the Tomahawk connector (bottom

connector).

2 Select the “Radio” from the phone’s User Interface Menu control.

3 Set a local radio station by selecting “Automatic Tuning” from the Radio Menu

and pressing the UP arrow.

4 Listen for sound out of the Tomahawk headset.

• If there is a signal present, continue with Step 5.

• If there is no static or sound present, inspect all the FM radio circuits on the bottom

PWB layer and refer to Troubleshooting - Baseband section of this manual on audio

amplifier troubleshooting.

FM Radio

CCS Technical Documentation Troubleshooting - FM Radio

RH-27

Issue 1 11/2003 Confidential ©2003 Nokia Corporation Page 5

FM Radio Testing with UHJ Headset

5 Disconnect the Tomahawk headset (HDS-3) from the Tomahawk connector and

connect the UHJ headset.

6 Select the “Radio” menu from the phone’s User Interface Menu control.

7 Set a local station by selecting “Automatic Tuning” from the Radio menu and

then pressing the Up arrow.

8 Listen for sound out of the headset.

FM

Radio

FM

Radio

FM

Radio

Inspect

Bottom PWB Layer

Top PWB Layer

RH-27

Troubleshooting - FM Radio CCS Technical Documentation

Page 6 ©2003 Nokia Corporation Confidential Issue 1 11/2003

• If there is a signal present, the radio is functioning properly.

• If there is no static or sound present, then inspect the FM radio, Baseband circuits, and

audio circuits. Consult the Troubleshooting - Baseband section of this manual for audio

troubleshooting.

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