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Flow Chart of Troubleshooting
9-13
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9-3. SPEAKER Working
NO
YES
NO
YES
NO
YES
NO
YES
YES
NO
NO
OPERATE
SPEAKER
SPK-ASSy' Break
down?
5, 6 pins in
U515
Signal On?
3,4 Pin in U400
Signal On?
6, 10 Pin in U402
Signal On?
35,36 pins for voice
call &
35, 36, 5 pins
for
MP3 in UCD 400
Singal On?
Check UCP 200 for
voice call ,
UCP 700 for Mp3
&Neighboring circuits
Change SPK -
Ass'y
Check U512 &
Neighboring
circuits
Check UCD 400&
Neighboring
circuits
Check U402 &
Neighboring
circuits
Check U400 &
Neighboring
circuits