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Service & Analysis Center Europe
SACE AMS Training Group
VSIM after switching on the phone without SIMcard. CCONT pulses up VSIM for four times, the first
time the amplitude is 3 Volt, the next three times it is 5 Volt.
If the phone is switched on with SIMcard, VSIM stays on the level with which the SIMcard works,
expected that SIMcard is not dirty or damaged.
Note that SIMClock and SIMData are only present when SIMcard is active, for example when phone registers to
network.
SIMReset is low-active, that means that the SIMcard will be reseted when SIMReset is 0 Volt. This is the case after
switching on the phone (diagram above). While VSIM is already high, SIMReset keeps low for a few milliseconds – in
this time the card will be reseted.
Repairhints_nse5_002508
CONFIDENTIAL
NSE-5
Repairhints
30.07.2000
Checked by:
AMS TRAINING GROUP
6 (30)
Version 1.0 Approved
Approved by:
SACE
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