Nokia 5130 User Manual

General RF troubleshooting
Introduction to RF troubleshooting
Troubleshooting process
RF troubleshooting is performed in this order:
1 Autotuning
2 General power checking
3 Selftests
4 RX and TX troubleshootings
Most RF semiconductors are static discharge sensitive
ESD protection must be applied during repair (ground straps and ESD soldering irons).
Pre-baking
These parts are moisture sensitive and must be pre-baked prior to soldering:
•
RFIC N1001
•
Front End Module (FEM) N1002
Discrete components
In addition to the two key-components, there are few number of discrete components (capacitors and
inductors) for which troubleshooting is done mainly by visual inspection .
Capacitors: check for short circuits.
Note: In-circuit measurements should be evaluated carefully
Measuring equipment
All measurements should be done using:
•
An oscilloscope for low frequency and DC measurements. Recommended probe: 10:1, 10Mohm//8pF.
•
A radio communication tester including RF generator and spectrum analyser, for example Rohde & Schwarz
CMU200. (Alternatively a spectrum analyser and an RF generator can be used. Some tests in this guide are
not possible to perform if this solution is chosen).
Note: All measurements with an RF coupler should be performed in an RF-shielded environment
because nearby base stations can disturb sensitive receiver measurements. If there is no possibility
to use RF shielded environment, testing at frequencies of nearby base stations should be avoided.
Level of repair
The scope of this guideline is to enable repairs at key-component level. Please refer to the troubleshooting
instructions for further information.
RM-495; RM-496
RF troubleshooting
Issue 1 COMPANY CONFIDENTIAL Page 4 –5
Copyright © 2008 Nokia. All rights reserved.

Nokia 5130 Specifications

General

Display	TFT, 256K colors
Internal Memory	30MB
Memory Card Slot	microSD, up to 16 GB (dedicated slot)
Camera	2 MP
Battery	Removable Li-Ion 1020 mAh battery (BL-5C)
Dimensions	107.5 x 46.7 x 14.8 mm, 65 cc (4.23 x 1.84 x 0.58 in)
Weight	88 g (3.10 oz)
Connectivity	Bluetooth 2.0, A2DP
Network Technology	GSM
2G bands	GSM 850 / 900 / 1800 / 1900
GPRS	Class 10
EDGE	Class 10
Status	Discontinued
SIM	Mini-SIM
Call records	20 dialed, 20 received, 20 missed calls
Primary Camera	2 MP
Alert types	Vibration; Downloadable polyphonic, MP3 ringtones
Loudspeaker	Yes
3.5mm jack	Yes
Radio	Stereo FM radio, RDS
Messaging	SMS, MMS, Email, IM
Browser	WAP 2.0/xHTML, HTML
Games	Yes + Downloadable
Java	Yes, MIDP 2.1
Stand-by	Up to 300 h
Talk time	Up to 6 h
Music play	Up to 21 h
Resolution	240 x 320 pixels
Operating System	Nokia Series 40
Video	176x144@15fps
Colors	Red, Blue
Phonebook	1000 entries