Introduction To Tfe-4/Rv-1 Troubleshooting; General Guidelines For Tfe-4/Rv-1 Troubleshooting; Tools Needed For Troubleshooting; Low Level Troubleshooting For Nokia 610/N616 - Nokia 616 Service Manual

Nokia Customer Care

Introduction to TFE-4/RV-1 troubleshooting

This document is intend to be a guide for localizing and repairing electrical faults in the
TFE-4/RV-1 device. Firstly there is a brief guide for fault localizing. Then fault repairing is
divided into troubleshooting paths.
Before any service operation you must be familiar with the TFE-4/RV-1 product and
module level architecture. You have to also be familiar with the TFE-4/RV-1 specified
service tools such as the Phoenix service software, flashing tools and software.
General guidelines for TFE-4/RV-1 trouble shooting

Tools needed for troubleshooting

• Service tools (as listed at service tools chapter in service manual)
• Laboratory power supply with current indicator
• Oscilloscope
• Digital multimeter

Low level troubleshooting for Nokia 610/N616

Fault symptom
System doesn't work at all
DU doesn't work/no DU illumination
DU blank, illumination OK
Display is stuck
Input-device/HS doesn't work, no illumination but DU is
working
Speaker doesn't work
Microphone doesn't work
SW hangs
Bad audio quality
No network connection/no service
No BT connection
No Source of fault
1 The system cable is not connected to the Radio Unit
2 The 2A fuse of the system cable is faulty
3
4 The connection cable is not connected
5 The Display Unit is faulty
6 The SW has hung
7 The Handset is faulty
8 The Speaker is faulty
9 The Microphone is faulty
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Source of fault and corrective action
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Corrective action
Check the cable connection
Replace fuse
Check the supply voltage from the car battery
Check the cable connection
Replace the DU
Disconnect the system cable of the RU and restart
Replace Handset
Replace Speaker
Replace Microphone
Check Equalizer settings
Check connections to antenna
Delete pairing, try to pair device again, BT device
may be faulty
TFE-4/RV-1
Troubleshooting
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