Nokia 2650 - Display Information: Contact Service

RH-53/54
Nokia Customer Care
10 COMPANY CONFIDENTIAL Issue 2 06/2005
Copyright © 2005 Nokia. All Rights Reserved.
■ Display information : "Contact Service"
This error can only happen at power up where several self-tests is run. If any of these test cases
fails the display will show the message: "Contact Service".
It's individual test cases so the below lineup of error hunting's has no chronological order. Use
common sense and experience to decide which test case to start error hunting at.
Figure 6:Troubleshooting when Contact Service message seen
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
! ASIC version vs. compilation flag, PMM checksum
! PMM validity
! Warrenty Information State
! SIM-Lock
Reflash phone
Check :
PWB.
Else defective D450 (FLASH)
Check :
A-face, domesheet, PWB.