Ericsson I 888 Trouble-Shooting Instruction page 16

Check the solderings on N800:24 and 26 (Fig 4.2). If they are good, measure the
resistance between the connection J810 and ground and also between the two pegs
on the connection. If the resistance to ground is lower than 25 kOhm, then replace
C840 and C841(both class A, Fig 4.1). If the resistance between the two pegs is
lower than 50 kOhm, replace C842 (class A, Fig 4.1). If the fault still remains, send
the phone to next repair level.
C819
C818
C814
R814
R812
R820
C851
C850
4.3 Microphone fault.
Open the phone and check for liquid damages, especially around X830 (Fig 4.3). If
there are no, try to change the front cover and the elastomer and try again.
4-00021-2/FEA 209 544/5.C
R811
R818
C820
16 1
17
64
32
49
48
33
C830
C829
Fig 4.2
X830
Fig 4.3
I888, Standard Electrical Repairs
R810
N800
16
(42)