Samsung GT-C3530 Service Manual page 23

8-3-8. EAR_Speaker Part
Ear_Speaker is not working.
Check the earphone connector is
Check the L404 = 0V
Check EarAmp enable signal is
(TP : R336 = 1.8V)
Check the Ear signals are on,
while playing the sound.
(TP : C308, C309)
Check the Ear signals passing
the Ear AMP are on, while
playing the sound.
(TP : R404, R403)
Check the ear signal paths
Check EAR400 pin 6, 7 is
Change the EAR400.
Yes
demaged.
Yes
correct.
Yes
Yes
Yes
Are signals on?.
(TP : L401,L400)
Yes
demaged.
Yes
Yes
END
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
No
Resolder the L404 or Replace the EAR
No
Resolder the R336 or Replace the UCP200.
No
Resolder the C308, C309 or Replace the
No
Resolder the Ear AMP(U316).
No
Resolder the R404, R403, L401, L400.
No
8-21
Level 3 Repair
connector(EAR400)
UCP200.
Change the Ear phone.