Test Coverage - Nokia 300 Service Manual

Symptom
Bluetooth feature does not
operate as desired with another
Bluetooth device
Poor FM radio reception (unable
to detect many radio stations)

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
Bluetooth Functional Test: BER
test with BT-Box or functional test
with other Bluetooth device
Bluetooth Self Test:
ST_LPRF_IF_TEST
Bluetooth Self Test:
ST_BT_WAKEUP_TEST
Bluetooth Self Test:
ST_LPRF_AUDIO_LINES_TEST
Bluetooth Functional Test: BER
test with BT-Box or functional test
with other Bluetooth device
FM Radio Functional Test: Perform
scan for local radio stations and
check station list displayed on
phone
FM Radio Functional Test: Listen to
local radio station
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.
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Problem
Bluetooth Profile implemented in
Bluetooth accessory not
supported in Nokia phone
Nokia headset not being used.
Test Coverage
Antenna connection from
module, including filter.
Bluetooth-FM ASIC UART interface
(controls Bluetooth and FM
receiver and transmitter)
Bluetooth ASIC interrupt control
interface
Bluetooth ASIC PCM interface
Bluetooth antenna circuit
FM receiver antenna circuit
FM receiver audio circuit
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Other peripherals (ie. CWS)
Solution
Use Bluetooth accessory with
Bluetooth profiles supported by
phone
Use Nokia headset
Repair Solution
Replacement of BTHFM ASIC or
antenna components
Replacement of BTHFM ASIC (or
repair of phone BB)
Replacement of BTHFM ASIC (or
repair of phone BB)
Replacement of BTHFM ASIC (or
repair of phone BB)
Repair of Bluetooth antenna
circuit (including RF filter)
Repair of FM antenna circuit
(between BTHFM ASIC and
headset connector)
Repair of FM receiver audio
circuit (between BTHFM ASIC and
headset connector)
RM-781
Issue 1