Symptom, Problem And Repair Solution - Nokia RM-579 Service Manual

RM-578; RM-579
RF troubleshooting
Figure 24 Test points in Bluetooth-FM ASIC circuit – BTHFMTXRDS3.0b (TI BL6450)

Symptom, Problem and Repair Solution

The following problems can occur with the Bluetooth and FM radio hardware:
Symptom
Unable to switch on Bluetooth on
phone user interface
Able to send data file to another
Bluetooth device, but unable to
hear audio through functional
Bluetooth headset
Issue 3
Problem
Open circuit solder joints or
component failure of BTH/FM
ASIC/module BB ASICs or SMD
components.
Open circuit solder joints or
component failure of BTH/FM
ASIC/module BB ASICs (PCM
interface).
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Repair Solution
Replacement of Bluetooth/FM
ASIC/module
Replacement of Bluetooth/FM
ASIC/module
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