User Guide
Table Of Contents
- Amendment Record Sheet
- Copyright
- Warnings and cautions
- For your safety
- Care and maintenance
- ESD protection
- Battery information
- Company Policy
- Nokia 1680c; Nokia 1681c Service Manual Structure
- 1 General Information
- 2 Service Tools and Service Concepts
- 3 Baseband Troubleshooting Instructions
- General baseband troubleshooting
- SIM related faults
- User interface
- Audio troubleshooting
- Audio troubleshooting using phoenix
- Check microphone using "Hp microphone in Ext speaker out" loop
- Check earpiece using "Ext microphone in Hp speaker out" loop
- Check IHF & ringing tone function using "Buzzer"
- Check vibra function using "Vibra control"
- Earpiece fault
- IHF/ringing tone fault
- Microphone fault
- Headset earpiece fault
- Headset microphone fault
- 4 RF Troubleshooting Instructions
- 5 Camera Module Troubleshooting (Only for RM-394/RM-395)
- 6 System Module
- Glossary
SA-93 RF coupler
The coupler is used for Go/No-Go test after changing components in
the RF part of the phone.
It is mounted on the docking station adapter.
The following table shows attenuations from the antenna pads of the
mobile terminal to the SMA connectors of SA-93:
•
Band Tuning
channel
Attenuation RX
(dB)
Attenuation
TX(dB)
GSM850 128 14 13
190 14 14
251 14 14
GSM900 38 10 8
124 12 8
975 8 10
GSM1800 512 13 14
700 12 14
885 11 13
GSM1900 512 9 12
661 8 11
810 8 10
SS-88 Camera removal tool
The camera removal tool SS-88 is used to remove/attach the front
camera module from/to the socket.
SS-93 Opening tool
SS-93 is used for opening JAE connectors.
ST-30 Rework stencil
It is used together with RJ-51 to rework N6301.
RM-394; RM-395; RH-118
Service Tools and Service Concepts
Issue 1 COMPANY CONFIDENTIAL Page 2 –11
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