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 3610 fold Service Manual Structure
- 1 General information
- 2 Service Tools and Service Concepts
- 3 BB Troubleshooting and Manual Tuning Guide
- General BB troubleshooting guidelines
- Phoenix self tests
- ST_CURRENT_CONS_TEST troubleshooting
- ST_SLEEPCLK_FREQ_TEST troubleshooting
- ST_SLEEP_X_LOOP_TEST troubleshooting
- ST_UEM_CBUS_IF_TEST troubleshooting
- Power and charging troubleshooting
- Interface troubleshooting
- User interface troubleshooting
- Camera module troubleshooting
- Audio troubleshooting
- Bluetooth troubleshooting
- Baseband manual tuning guide
- 4 RF troubleshooting
- 5 System Module
- Glossary
Figure 3 Power up timing
1 User presses the power/end key -> PWRONX is low.
2 Vilma activates Vana, VIO, VDRAM (1.8V), sleep oscillator and VR1 -> VCTCXO starts running, Digital ASIC
gets system clock, I/O buffers are powered, FLASH devices are powered. Vilma raises RstX signal to Betty.
3 Betty starts Vcore regulator immediately when RstX rises. Due to soft start this however may take up to
1 ms.
4 RF clock is stable.
5 After 16 ms Vilma releases PURX -> Digital ASICs start their boot sequence. RAP3G can switch SW controlled
regulators on/off, RAP3G controls sleeping by SleepX signal.
6 RAP3G is powered up.
Note: SleepX signal is raised at the beginning of start up procedure and it does not go to zero before
system is really ready to go to sleep. This differs from behaviour in previous generations.
RM-429
BB Troubleshooting and Manual Tuning Guide
Page 3 –14 COMPANY CONFIDENTIAL Issue 1
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