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Check the solderings at N800 pins 24 and 26 (fig. 4.2).
• If they're ok, measure the resistance from the J810 pins to ground (>25 kohms)
and from pin to pin (>50 kohms).
* If the resistance to ground is too low, replace C840 and C841 (both of them
class A, fig. 4.1).
* If the resistance from pin to pin is too low, replace C842 (class A, fig. 4.1).
If the fault remains, send the phone to the next level.
Fig. 4.2
4.3 Microphone fault.
Open the phone and check for liquid damages, especially around X830 (fig. 4.3).
• If it isn't liquid damaged, replace the front and elastomer and try again.
Fig. 4.3
If the fault remains, check the solderings at N800 pins 13-18 (fig. 4.2).
4/00021-2/FEA 209 544/3.D
SH888, S868, Standare Electrical Repair
19
(66)
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