Introduction To Wlan Troubleshooting - Nokia RM-701 Service Manual

RM-701
BB Troubleshooting and Manual Tuning Guide
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_BT_IF_TEST
Bluetooth Self Test:
ST_BT_WAKEUP_TEST
Bluetooth Self Test:
ST_BT_AUDIO_IF_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:
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.

Introduction to WLAN troubleshooting

The following problems can occur with the WLAN hardware:
Symptom
Unable to switch on WLAN on
phone user interface
Issue 1
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
Problem
Open circuit solder joints or
component failure of BOB
module
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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
(headset connector circuit or
internal FM antenna)
Repair of FM receiver audio
circuit (between BTHFMWLAN
ASIC and headset connector).
If internal FM antenna is used,
repair IHF audio circuit.
Replacement of FM transmitter
circuit or antenna
Repair solution
Replacement of BOB module
or Host
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