Display Information: "Contact Service - Nokia NPM-10 Series Troubleshooting Instructions

CCS Technical Documentation

Display information: "Contact Service"

This error can only happen at power up where several self-tests run. If any of these test
cases fails, the display will show the message: "Contact Service".
It's individual test cases, so the following list of possible errors has no chronological
order. Use common sense and experience to decide where to begin error hunting.
Display shows
"Contact Service"
Yes
Issue 1 03/2003
EarDa & MicDa
between
UPP and UEM?
MBUS interface
between
UPP and UEM?
AuxDa & UEMInt
between
UPP and UEM?
SleepX & SleepClk
between UPP & UEM?
TXI/QD & RXI/QD?
SIM interface between
UPP & UEM
Key is stucked
Flash checksum
ASIC version vs. compilation flag, PMM checksum
PMM validity
Warrenty Information State
SIM-Lock
Nokia Corporation
Troubleshooting Instructions
No
R205
Check R205
(no short/open-circuit)
Check :
A-cover, Keymat, Lightguide,
PWB.
Reflash phone
Confidential
NPM-10
Check :
PWB.
Else defective D200*
or D400*
Error still present
Check :
PWB.
Else defective D450 (FLASH)
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