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RM-12
"Insert SIM Card" in device display although SIM card is inserted
START
Perform
No
SIM BB self tests.
Replace UEM
Are they OK?
Yes
Perform
No
Phoenix SIM tests.
Are they OK?
Yes
Check & clean battery
No
Is the SIM
centre contact. Verify BSI
Detection Reliable?
signal has a steady voltage.
Yes
Analyse signals & look for
No
errors in rise / fall times due
Problem solved?
to wrong fitted / faulty
Yes
END
Page 105
Note! OMAP, UEM and UPP are unchangeable.
Perform
No
BB SIM self tests.
Are they OK?
Yes
No
Check SIM connector
Is it OK?
Yes
Measure VSIM.
No
Is it 1.8/3.0V when SIM
interface is powered
up?
Yes
No
Check SIM Power Up
sequencing. Is it OK?
Yes
passives
Copyright ©Nokia. All rights reserved
UPP8M
Replace UPP_WD2
Check & clean connector
contacts & pads
Replace connector
Measure VSIM
No
Change UEM
resistance to GND.
Is it low?
Yes
No
Change VSIM
C2700.
Check C471. Is it OK?
, C2700
r
decouple,C471
Is it OK?
Yes
R2700
Change SIM ASIP, R496
Check Clk,
Check Clk, RST &
No
RST & DATA between
DATA at SIM connector.
UEM and the SIM ASIP.
Are the signals
Are the signals
present?
present?
Yes
Yes
Change SIM ASIP, R496
Nokia Customer Care
No
Change UEM
R2700
Issue 1 11/2004
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Table of Contents
Troubleshooting
