Display Information : "Contact Service - Nokia RH-18 Troubleshooting Instructions

CCS Technical Documentation

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.
Display shows
"Contact Service"
Yes
between UPP & UEM?
SIM interface between
Figure 4: Troubleshooting when Contact Service message seen
Issue 1 10/03
Company confidential
EarDa & MicDa
between
UPP and UEM?
MBUS interface
between
UPP and UEM?
AuxDa & UEMInt
between
UPP and UEM?
SleepX & SleepClk
TXI/QD & RXI/QD?
UPP & UEM
Key is stucked
Flash checksum
!
ASIC version vs. compilation flag, PMM checksum
!
PMM validity
!
Warrenty Information State
!
SIM-Lock
Nokia Corporation.
No
Check :
A-cover, Keymat, Lightguide,
PWB.
Reflash phone
RH-18/36/38
Check :
PWB.
Else defective D200*
or D400*
Check :
PWB.
Else defective D450 (FLASH)
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