A1018s/A1018sc Standard Electrical Repair
4/00021-2/FEA 209 544/16.B 40 (42)
10 RTC
10.1 Find the fault.
Start the phone with a SIM card inserted and a fully battery attached. Set the clock
at the right time. Remove the battery and reattach it after one minute.
• If the clock in the phone shows 00:00, proceed to section 10.2.
Compare to a clock with the correct time.
• If the clock in the phone is speeding or halted, proceed to section 10.3.
The component side of the board is shown in figure 10.1.
Fig. 10.1
10.2 The clock shows 00:00 after removing and
reattaching the battery.
Open the phone and make sure the backup capacitor C720 (class A, Fig. 10.2) is
correctly soldered.
Fig. 10.2
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