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Check the VDIG (~3.2V) voltage at the marked side of C600 (fig. 6.2), VRAD
(~3.8V) at N450 pin 13 (fig. 6.1) and the resistance of R703 (~0 ohms, class A, fig.
6.2).
• If any of the voltages are incorrect, proceed to chapter 3 ("Doesn´t start"-fault).
• If the voltages are correct, send the phone to the next level.
6.3 Doesn't begin to charge.
Open the phone and check for liquid damages. Make sure the system connector pads
aren't burnt and that there isn't oxide on them, especially GND (pad 10, fig. 6.1).
Measure the resistance from DCIO to VBATT (~390 ohms, fig. 6.1).
• If the resistance is too low, replace V401 (class A).
• If it's too high, measure the resistance of R421 (class B, ~0.1 ohms) and R411
(class A, ~390 ohms, both in fig. 6.2).
4/00021-2/FEA 209 544/3.D
SH888, S868, Standare Electrical Repair
Fig. 6.1
Fig. 6.2
29
(66)
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