Troubleshooting Guide; Other Peripherals Troubleshooting Guide Description; Symptom, Problem And Repair Solution - Nokia 300 Service Manual

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Other peripherals (ie. CWS)

Troubleshooting Guide

Other Peripherals Troubleshooting Guide Description

Introduction
The BTHFM ASIC module supports BTH and FM RX.
Test point details
Required for de-bugging and customer care:
• J6312 CLK_REQ

Symptom, Problem and Repair Solution

The following problems can occur with the Bluetooth and FM radio hardware:
Symptom
Unable to switch on Bluetooth on
phone user interface
Able to send data file to another
Bluetooth device, but unable to
hear audio through functional
Bluetooth headset
Able to turn switch on Bluetooth
on phone user interface, but
unable to detect other Bluetooth
devices
Problems connecting to specific
manufacturer/model Bluetooth
accessory (specific Bluetooth
profile supported by phone and
accessory in product
specification)
Able to turn on FM radio and
Bluetooth on phone user
interface, but unable to detect
local FM radio stations with FM
headset inserted
Able to perform scans to detect
local FM radio stations with
functional FM headset inserted,
but unable to hear FM audio
through headset.
Users may experience the following problems resulting in functional phones being returned to the repair
centre:
Issue 1
Problem
Open circuit solder joints or
component failure of BTFMH ASIC
or SMD components.
Open circuit solder joints or
component failure of BTFMH ASIC
(PCM interface).
Open circuit solder joints or
detected component in
Bluetooth antenna circuit.
Possible interoperability issue
with accessory fixed in recent
Nokia phone software release
(check Nokia Service Bulletin for
latest information)
Open circuit solder joints or
detached component in FM
receiver antenna circuit.
Open circuit solder joints or
detached component in FM
receiver audio path between
Bluetooth/FM ASIC and headset.
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Repair Solution
Replacement of BTFMH ASIC
Replacement of BTFMH ASIC
Repair of Bluetooth antenna
circuit
Update phone software to latest
version if advised in Nokia Service
Bulletin
Note: The phone Bluetooth
Address and software version are
displayed by pressing *#2820#
when Bluetooth is on.
Repair of FM receiver antenna
circuit
Repair of FM audio circuit
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