Symptom
Problem
Repair solution
Able to switch on Bluetooth on
phone user interface, but unable
to detect other Bluetooth devices
Open circuit solder joints or
detached component in
Bluetooth antenna circuit
Repair of Bluetooth antenna
circuit
Problems connecting to specific
manufacturer/model Bluetooth
accessory (specific Bluetooth
profile supported by phone and
accessory in product
specification)
Possible interoperability issue
with accessory fixed in recent
Nokia phone software release
(check Nokia Service Bulletin for
the latest information)
Update phone software to
the 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.
Able to turn on FM radio and
Bluetooth on phone user
interface, but unable to detect
local FM radio stations with FM
headset inserted
Open circuit solder joints or
detached component in FM
antenna circuit
Repair of FM receiver antenna
circuit
Able to perform scans to detect
local FM radio stations with
functional FM headset inserted,
but unable to hear FM audio
through headset
Open circuit solder joints or
detached component in FM
receiver audio path between
Bluetooth/FM ASIC and headset
Repair of FM audio circuit
Users may experience the following problems resulting in functional phones being returned to the repair
centre:
Symptom
Problem
Repair solution
Bluetooth feature does not
operate as desired with another
Bluetooth device
Bluetooth Profile implemented
in Bluetooth accessory not
supported in Nokia phone
Use Bluetooth accessory with
Bluetooth profiles supported
by phone
Poor FM radio reception (unable
to detect many radio stations)
Nokia headset not being used
Use Nokia headset
BT and FM radio test coverage
The tests listed in the table below should be performed to verify whether the Bluetooth and FM receiver are
functional. The use of self tests is described in section
Bluetooth and FM radio self tests in Phoenix
.
Test
Test Coverage
Repair solution
Blueooth Self Test: ST_LPRF_IF_TEST Bluetooth-FM ASIC UART interface
(controls Bluetooth and FM
receiver and transmitter)
Replacement of BOB module
(or repair of phone BB)
Bluetooth Self Test:
ST_BT_WAKEUP_TEST
Bluetooth ASIC interrupt control
interface
Replacement of BOB module
(or repair of phone BB)
Bluetooth Self Test:
ST_LPRF_AUDIO_LINES_TEST
Bluetooth ASIC PCM interface
Replacement of BOB module
(or repair of phone BB)
RM-626
BB Troubleshooting and Manual Tuning Guide
Issue 1
COMPANY CONFIDENTIAL
Page 3 – 59
Copyright © 2011 Nokia. All rights reserved.