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
MJ-178 Module jig
MJ-178 is meant for component level troubleshooting.
The jig includes an RF interface for GSM and Bluetooth. in addition, it
has the following features:
• Provides mechanical interface with the engine and UI module
• Provides galvanic connection to all needed test pads in module
• Duplicated SIM connector
• Audio components: IHF, MIC
• Connector for control unit
Note: CA-128RS(RF cable) is used together with MJ-178.
CA-128RS is not a part of the MJ-178 sales package and has to
be ordered separately.
The following table shows the attenuation values for MJ-178:
•
Frequency (Hz) Loss (dB)
836600000 0.24
881600000 0.24
897400000 0.25
942400000 0.25
1747800000 0.35
1842800000 0.37
1880000000 0.38
1950000000 0.40
1960000000 0.40
2140000000 0.40
PCS-1 Power cable
The PCS-1 power cable (DC) is used with a docking station, a module
jig or a control unit to supply a controlled voltage.
RM-394; RM-395; RH-118
Service Tools and Service Concepts
Issue 1 COMPANY CONFIDENTIAL Page 2 –9
Copyright © 2008 Nokia. All rights reserved.