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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
C h e ck th eU 6 0 2
P in3 , 1 5
Y e s
C h e ck th eU 6 0 4P in5
(E A R 1 )
Y e s
U 3 0 0p in1 7 ,1 8¡Ö1 .8 V ?
(W h e nU 3 0 0o p e ra te )
Y e s
C h e ck th eR 7 1 4 , R 7 1 5
Y e s
C h e ck LC DM O D U LE
S P K +, S P K -
=O p e ra te
Y e s
IsS p e a ke r w o rkin g ?
Y e s
E N D
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N o
N o
C h e ck th eU 6 0 4P in1(LO U D _ E N ),
N o
N o
N o
C h e ck th eb o a rdtob o a rd
N o
7- 12
C h e c k th eU 3 0 0
R e s o ld e r U 6 0 4
R e s o ld e r U 3 0 0
R e s o ld e r U 6 0 2
C o n n e cto r
C h a n g eth eS p e a ke r
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