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.