A1018s/A1018sc Standard Electrical Repair
4/00021-2/FEA 209 544/16.B
18
(42)
Fig. 4.4
If the fault still remains, send the phone to the next repair level.
4.6 The handsfree speaker is out of order.
Open the phone and check for liquid damages, especially around the pads of the
system connector, J602:1,2,4 (fig. 4.3).
Measure the resistance between the system connector J602:1 and ground (~100
kohm), if it is too low, replace F601 (fig. 4.1), C650 and C668 (fig. 4.2) (all class A,
fig. 4.1).
Check the soldering at N800 (fig. 4.2).
Check the resistance of :
R806 (100 Ohm)
R804 (100 kOhm)
C813 (>1 MOhm)
If any component is faulty, replace it (all class A, fig. 4.2).
If the fault still remains, send the phone to the next repair level.