A1018s/A1018sc Standard Electrical Repair
4/00021-2/FEA 209 544/16.B 23 (42)
3 - I2CDAT (~ 3.2V) is incorrect, measure the resistance of R619 (6.8 kOhm, fig.
5.2). Check the soldering at D600:3. If all is correct, replace D600.
5 - I2CCLK (~3.2 V) is incorrect, measure the resistance of R620 (6.8 kOhm, fig.
5.2). Check the soldering at D600:4. If all is correct, replace D600.
Fig. 5.2
5.4 The display is black.
Open the phone and check for liquid damages. Try again using a display you know
is correct. If the fault remains, measure the resistance of R808 (33 kOhm, fig. 5.2).
If the resistance is very low, replace C824 and C826, otherwise replace R807 and
R808 (all in fig.5.2).
If the fault still remains, send the phone to the next repair level.
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