Nokia RM-11 Series Operating instructions

CC Technical Documentation
RM-11 Series Transceivers
Issue 2 09/2005 Confidential ©2005 Nokia Corporation
Troubleshooting - FM Radio

RM-11
Troubleshooting - FM Radio CC Technical Documentation
Page 2 ©2005 Nokia Corporation Confidential Issue 2 09/2005
Contents Page
Troubleshooting - FM Radio.......................................................................................... 3
FM Radio Testing with Pop-Port™ Connector Headset ...............................................3
FM Radio Testing with UHJ Headset ..........................................................................4

CC Technical Documentation Troubleshooting - FM Radio
RM-11
Issue 2 09/2005 ©2005 Nokia Corporation Confidential Page 3
Troubleshooting - FM Radio
The FM radio circuits are located on the bottom of the PWB, near the Pop-port™
connector.
Figure 1: FM radio circuits
FM Radio Testing with Pop-Port™ Connector Headset
1. Connect the Pop-Port™ connector headset (HDS-3) to the Pop-Port™ connector
(bottom connector).
2. Select “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 Pop-Port™ connecotr headset.
• If there is a signal present, continue with step 1 in the next section,
"FM Radio Testing with UHJ Headset".
• If there is no static or sound present, inspect all the FM radio circuits on the
bottom PWB layer and refer to the Troubleshooting - Baseband section of
this manual on audio amplifier troubleshooting.

RM-11
Troubleshooting - FM Radio CC Technical Documentation
Page 4 ©2005 Nokia Corporation Confidential Issue 2 09/2005
FM Radio Testing with UHJ Headset
1. Disconnect the Pop-Port™ connecotr headset (HDS-3) from the Pop-Port™
connector and connect the UHJ headset.
2. Select the “Radio” menu from the phone’s User Interface Menu control.
3. Set a local station by selecting “Automatic Tuning” from the Radio menu and
then pressing the Up arrow.
4. Listen for sound out of the headset.
• 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.
Figure 2: Bottom and top PWB layer inspection areas
Top PWB layer
Bottom PWB layer
Inspect