User Guide
Table Of Contents
- Amendment Record Sheet
- Copyright
- Warnings and cautions
- For your safety
- Care and maintenance
- ESD protection
- Battery information
- Company Policy
- Nokia 5000 Service Manual Structure
- 1 General Information
- 2 Service Devices and Service Concepts
- 3 Baseband Troubleshooting Instructions
- General baseband troubleshooting
- SIM related faults
- User interface
- Audio troubleshooting
- Audio troubleshooting using phoenix
- Check microphone using "Hp microphone in Ext speaker out" loop
- Check earpiece using "Ext microphone in Hp speaker out" loop
- Check IHF & ringing tone function using "Buzzer"
- Check vibra function using "Vibra control"
- Earpiece fault
- IHF/ringing tone fault
- Microphone fault
- Headset earpiece fault
- Headset microphone fault
- 4 RF Troubleshooting Instructions
- 5 Camera Module Troubleshooting
- 6 System Module
- Glossary
Figure 111 Keyboard schematics
SIM interface
The UEMCLite contains the SIM interface logic level shifting. The SIM interface can be programmed to support
3V and 1.8V SIMs. SIM supply voltage is selected by with register in the UEMCLite. It is only allowed to change
the SIM supply voltage when the SIM IF is powered down.
The SIM power up/down sequence is generated in the UEMCLite. This means that the UEMCLite generates the
RST signal to the SIM. In addition, the SIMCardDet signal is connected to UEMCLite. The detection is taken from
the BSI signal, which detects the removal of the battery. The monitoring of the BSI signal is done by a
comparator inside UEMCLite. The comparator offset is such that the comparator outputs do not alter state as
long as the battery is connected. The threshold voltage is calculated from the battery size specifications.
The SIM interface is powered up when the SIMCardDet signal indicates ”card in”. This signal is derived from
the BSI signal.
RM-362; RM-363
System Module
Issue 1 COMPANY CONFIDENTIAL Page 6 –15
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