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 3500c Service Manual Structure
- 1 General information
- 2 Service Tools and Service Concepts
- 3 BB Troubleshooting and Manual Tuning Guide
- Baseband troubleshooting overview
- Power and charging troubleshooting
- Interface troubleshooting
- User interface troubleshooting
- Audio troubleshooting
- Introduction to acoustics troubleshooting
- Audio troubleshooting test instructions
- Earpiece troubleshooting
- Internal earpiece troubleshooting
- External headset earpiece troubleshooting
- IHF troubleshooting
- IHF troubleshooting
- Microphone troubleshooting
- Internal microphone troubleshooting
- External headset microphone troubleshooting
- Connections troubleshooting
- Baseband manual tuning guide
- 4 RF Troubleshooting and Manual Tuning Guide
- 5 System module
- Glossary
RF key components
Figure 17 RF key components, bottom side main board
BOM1 versus BOM3
RM-272/RM-273 can use two different sources for components, resulting in two BOMs - BOM1 and BOM3.
The troubleshooting is the same for both BOMs. The schematics are also identical.
However, it is not possible to mix BOM1 and BOM3 parts.
Therefore during troubleshooting, you must identify whether you are working on a BOM1 or BOM3 PWB and
only use components which belong to that particular BOM (BOM1 or BOM3). You must not use BOM3 parts to
repair BOM1, or BOM1 parts to repair BOM3.
RM-272; RM-273
RF Troubleshooting and Manual Tuning Guide
Page 4 –6 COMPANY CONFIDENTIAL Issue 1
Copyright © 2007 Nokia. All rights reserved.