Symptom Problem 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
Test Coverage
The tests listed in the table below should be performed to verify whether the Bluetooth and FM receiver are
functional.
As Bluetooth and FM receiver share the same ASIC, all of these functions should be re-tested after repair to
the Bluetooth-FM circuit (if supported by the phone).
Test Test Coverage Repair Solution
Bluetooth Functional Test: BER
test with BT-Box or functional test
with other Bluetooth device
Antenna connection from
module, including filter.
Replacement of BTHFM ASIC or
antenna components
Bluetooth Self Test:
ST_LPRF_IF_TEST
Bluetooth-FM ASIC UART interface
(controls Bluetooth and FM
receiver and transmitter)
Replacement of BTHFM ASIC (or
repair of phone BB)
Bluetooth Self Test:
ST_BT_WAKEUP_TEST
Bluetooth ASIC interrupt control
interface
Replacement of BTHFM ASIC (or
repair of phone BB)
Bluetooth Self Test:
ST_LPRF_AUDIO_LINES_TEST
Bluetooth ASIC PCM interface Replacement of BTHFM ASIC (or
repair of phone BB)
Bluetooth Functional Test: BER
test with BT-Box or functional test
with other Bluetooth device
Bluetooth antenna circuit Repair of Bluetooth antenna
circuit (including RF filter)
FM Radio Functional Test: Perform
scan for local radio stations and
check station list displayed on
phone
FM receiver antenna circuit Repair of FM antenna circuit
(between BTHFM ASIC and
headset connector)
FM Radio Functional Test: Listen to
local radio station
FM receiver audio circuit Repair of FM receiver audio
circuit (between BTHFM ASIC and
headset connector)
The self tests run from Phoenix software are used for fault diagnosis.
If Phoenix software is not available the functional tests with phone accessories are sufficient to verify the
function of Bluetooth and FM radio receive.
If radio reception is poor inside the service centre buildings, the FM receiver can be tested using another FM
transmitter device connected to a music player.
RM-781
Other peripherals (ie. CWS)
Page 6 – 6 COMPANY CONFIDENTIAL Issue 1
Copyright © 2011 Nokia. All rights reserved.
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