Nokia RM-11 Series Istruzioni operative

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

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