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3 RTC (RTC Battery)
3.1 Affected Units
Type:
Affected IMEIs / Date Codes:
Affected SW-Versions:
3.2 Fault Description
Fault Symptoms for customers:
Time/Clock will reset each time power on.
No call records can be saved.
Fault Symptom on GSM-Tester:
None
Component Information
The RTC is a capacitor that supplies the power to the system to make the real time clock go on
counting about 45minutes after the main battery of phone is taken off. Besides, the RTC battery
will always be charged from the PMS when the main battery is inside the phone. See drawing
below.
V 1.1
ST55
PMS: Power Management System
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