Motorola M3097 Service Manual download pdf (Page 84)

©1999 Motorola, Inc.

B-1

Introduction

The service diagrams were carefully prepared

to allow a Motorola certified technician to

easily troubleshoot cellular phone failures.

Our professional staff provided directional

labels, color coded traces, measurement val-

ues and other guidelines to help a technician

troubleshoot a cellular phone with speed and

accuracy.

We worked hard in trying to provide the best

service diagrams, therefore, to avoid clut-

tered diagrams, we excluded some compo-

nents from the service diagrams. Our pro-

fessional staff carefully selected to excluded

components that are unlikely to fail.

Test Point Measurements

The measurements labeled on the service

diagrams are approximate values and may

vary slightly. These measurements are de-

pendent on the accuracy of the test equip-

ment.

It is strongly recommended that the test

equipment calibration schedule be followed

as stated by the manufacturer. RF probes

should be calibrated for each frequency in

which tests are going to be performed.

The types of probes used will also affect mea-

surement values. Test probes and cables

should be tested for RF losses and loose con-

Service Diagrams

nections.

Because of the sensitivity of RF, measured

readings will be greatly affected if they’re

taken in certain locations. To get the most

accurate readings, take measurements near-

est to the labeled measurement on the ser-

vice diagram.

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