User Guide

RM-4/RM-5
Troubleshooting Instructions CCS Technical Documentation
ISSUE 1 02/2004 COMPANY CONFIDENTIAL 11
Copyright © 2003 Nokia. All Rights Reserved.
Display information: "Contact Service"
This message shows when internal self-tests have failed. If any of the following cases fails the
display will show the message: "Contact Service".
The lineup below has no chronological order. Use common sense and experience to decide
which test case to start error hunting at.
Display shows
"Contact Service"
EarDa & MicDa
between
UPP and UEM?
Check :
PWB.
Else defective D200*
or D400*
MBUS interface
between
UPP and UEM?
AuxDa & UEMInt
between
UPP and UEM?
Yes
No
SleepX & SleepClk
between UPP & UEM?
Key is stucked
TXI/QD & RXI/QD?
SIM interface between
UPP & UEM
Flash checksum
y ASIC version vs. compilation flag, PMM checksum
y PMM validity
y Warrenty Information State
y SIM-Lock
Reflash phone
Check :
PWB.
Else defective D450 (FLASH)
Check :
A-cover, Keymat, Lightguide,
PWB.