Sim Card - Check Card/Insert Sim - Motorola MotoRAZR maxx V6 Manual

Motorola GmbH, Mobile Devices, CSS Center
Title: Troubleshooting-Guide MotoRAZR maxx V6
SIM card – check card/insert SIM
Measurement on the SIM interface is a little bit difficult, as not all signals will be present until
a SIM card and a battery are inserted. As far as we know, there is still no SIM feature
implementation in RepairStudio or Radiocomm. In the most cases it should be possible to
figure out which part is defective by simply using an Ohm Meter to measure the following
signals to GND:
- VSIM at M5500-3,
If far less than 30 kOhm to GND, it could be a defective ATLAS IC U3000.
- USIM_CLK_1
- USIM_RST_1
- USIM_IO_1
If any of these has far less than 30 kOhm to GND, it could be a defective ARGON IC
– forward to an authorized level 4 service center.
Before replacing the ATLAS IC
associated capacitors/diodes have low resistance to GND.
Repair Support Information
M5500-5
at M5500-1
at M5500-2
at M5500-6
U3000 or the ARGON U1000, make sure that none of the
Figure 27
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© Copyright 2003-2007 Motorola Inc. All Rights reserved.
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TSG_3G_V6
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23.07.2007
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U1000