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6-6
SGH-S300 Flow Chart of Troubleshooting and Circuit Diagram s
8.A lert Tone
Check the connection
from C N 200-1 to LC D
M odule
C heck the circuit related to
U 400,U 401
N O
Change Speaker
N O
C hange L CD M odule
N O
YES
YES
A bnorm al A lert tone
E N D
YES
Check the P IN 17, 18 of
C N 200-1
Is there alert w ave?
A lert is ok?
A lert tone O n by pushing the key
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