Table 1 Audio - Nokia RM-596 Service Manual

RM-596
BB Troubleshooting and Manual Tuning Guide
Symptom
Poor FM transmitter range (for
example with car radio)
BT and FM radio test coverage
The tests listed in the table below should be performed to verify whether the Bluetooth and FM receiver and
transmitter are functional. The use of self tests is described in section
Phoenix .
Test
Blueooth 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
FM Transmitter Antenna Test: Read
Antenna Tuning Values in Phoenix
or functional test transmitting
music to nearby radio
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
functionality of Bluetooth and FM radio receiver and transmitter.
If Bob1.0M-b module has been replaced, the WLAN tuning must be performed to ensure that the
output complies with ETSI/ FCC legal limits.
FMTX troubleshooting faults
Possible faults
Issue 2
Problem
Large path loss between the
phone FM transmitter antenna
and external FM radio aerial (for
example, FM aerial routing
inside car is very well screened
or greater than 3 metre
distance between the phone
and FM radio)
Test Coverage
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
FM transmitter antenna circuit and
antenna
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Repair solution
Change the setup of aerial on
FM radio used for listening to
audio
Bluetooth and FM radio self tests in
Repair solution
Replacement of BOB module
(or repair of phone BB)
Replacement of BOB module
(or repair of phone BB)
Replacement of BOB module
(or repair of phone BB)
Repair of Bluetooth antenna
circuit (including RF filter or
WLAN switch if fitted)
Repair of FM antenna circuit
(between BTHFMWLAN ASIC
and headset connector)
Repair of FM receiver audio
circuit (between BTHFMWLAN
ASIC and headset connector)
Replacement of FM transmitter
circuit or antenna
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