User Guide

PAMS
Technical Documentation
RAE-3
8. Troubleshooting
Page 8 – 6
Issue 1 06/01
Introduction
This document is intend to be a guide for localizing and repairing electrical
faults in the RAE–3 device. First there is a brief guide for fault localizing. Then
fault repairing is divided into troubleshooting paths.
Before any service operation you must be familiar with the RAE-3 product and
module level architecture. You must also be familiar with the RAE-3 specified
service tools such as the WinTesla service software, Flashing tools and soft-
ware. Basic skills of using RF measurement devices are required when starting
to follow the RF troubleshooting paths.
RAE–3 System HW / UI Troubleshooting
Tools needed for troubleshooting:
S Service tools defined in RAE–3 manual “Service Tools” section
S Laboratory power supply with current indicator
S Oscilloscope
S Digital multimeter . .
General guidelines
General notes about the RAE–3 product:
S RAE–3 has only one common engine – BL8 system HW, . . . .
comprising CMT (phone) and PDA (computer). . . . .
S There are separate CMT and PDA displays and keyboards
S CMT display/keyboard and PDA display are on the UI module
DL2. . . . .
S PDA QWERTY–keyboard UI is on UL8 flex module
S Audio connections for the handsfree speaker and earpiece are
on the UL8 flex module. . . . .
When you have a faulty RAE-3 device and you start to troubleshoot it, check
first the following items:
S If the RAE-3 cannot be turned on by any means, see ”dead . .
device” troubleshooting. . . . .
S Blinking CMT display means that a memory fault is preventing
normal boot up (–> Memory tests). . . . .
S Current consumption (missing consumption) gives an idea . . .
whether the device able to start up. . . . .
S Dropping supply voltage indicates a short circuit
S Check whether the connection with Wintesla works and what can
be discovered with Wintesla. . . . .
S Check self tests with Wintesla if ”CONTACT SERVICE” is shown
on the CMT display. . . . .