User Guide

Bluetooth and FM Radio Troubleshooting

Introduction to Bluetooth/FM radio troubleshooting

Bluetooth/WLAN/GPS antenna

Figure 15 Bluetooth/WLAN and GPS antenna in B-cover

The BT RF signal is routed from BTFMRDS2.0 through the WLAN module to the shared WLAN/BT antenna in

the phone's B-cover. The WLAN RF signal is routed from the WLAN module to the shared WLAN/BT antenna

in the phone's B-cover. The GPS signal is routed from the GPS antenna into the GPS chip.

Bluetooth/FM radio troubleshooting

The Bluetooth and FM radio are combined in the same ASIC, so both features are checked when

troubleshooting.

The following problems can occur with the Bluetooth and FM radio hardware:

Symptom Problem Repair solution

Unable to switch on Bluetooth on

phone user interface

Open circuit solder joints or

component failure of BTH/FM

ASIC/module BB ASICs or SMD

components.

Replacement of Bluetooth/

FM ASIC/module

RM-348; RM-349; RM-350

Baseband Troubleshooting

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