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R802
C810
R825
C813
R804
R806
4.5 Handsfree microphone fault.
Check the contact pads at the system connector for dirt, liquid damages and oxida-
tion. Replace the system connector if needed.
Open the phone and check for liquid damages, especially around the system connec-
tor pads.
Check the soldering at N800 pin 19 (fig. 4.2).
Measure the resistance of R825 (~3.3 kohms), R830 (~470 ohms), R802 (~3.9
kohms), R805 (15 kohms), C835 (>1 kohms), C817 (>100 kohms), C810 (>10
kohms) and C812 (>100 kohms, all of class A and in fig. 4.4).
If the fault remains, send the phone to the next level.
4.6 Handsfree isn't detected.
Check the contact pads at the system connector for dirt, liquid damages and oxida-
tion. Replace the system connector if needed.
Open the phone and check for liquid damages, especially around the system connec-
tor pads.
Check the solderings at D600 pins 67 and 70 (fig. 4.4).
Measure the resistance of R635 (~22 kohms, fig. 4.1), R636 (~22 kohms, fig. 4.4),
R601 (~1 kohms, fig. 4.4) and R605 (~1 kohms, fig. 4.1, all of class A).
4/00021-2/FEA 209 544/3.D
SH888, S868, Standare Electrical Repair
C817
C812
D600
R805
R830
C835
R636
Fig. 4.4
32
1
33
128
97
64
96
65
R601
21
(66)
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