Speaker Part(Melody) - Samsung SGH-E340 Service Manual

F low Chart of Troubleshooting

7-6. Speaker Part(Melody)

S p e a ke r d o e sn o t w o rk
Y e s
N o
U 3 0 2p in5=2 .9 V ?
R e s o ld e r o r re p la ceU 3 0 2
Y e s
N o
C h e ck th eC lo ck s ig n a l a t
C h e ck th eclo c k g e n e ra tio ncircu it
P in1o f U 3 0 3(2 6 M H z )
(re la te dtoU 1 0 0 a n dU 3 0 3 )
Y e s
N o
U 3 0 3p in1 7 ,1 8¡Ö1 .8 V ?
R e s o ld e r U 3 0 3
(W h e nU 3 0 3o p e ra te )
Y e s
N o
C N 7 0 3p in4 0 ,4 2¡Ö1 .8 V ?
R e s o ld e r C N 7 0 3
(W h e nU 3 0 3o p e ra te )
Y e s
N o
C h a n g eth eS p e a ke r
IsS p e a ke r w o rkin g ?
Y e s
E N D
7- 11
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