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Level 3 Repair
8-8
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8-3-1-3 SPEAKER/RECEIVER WORKING
Operate speaker/
Recerver
NG
Connect Speak
er/Receiver FP
CB correctly?
Connect correctly
NO
YES
Speaker break
down?
YES
Change Speaker
Module
NO
Signal on in
C520,C521
(SPK mode)/
ZD505,ZD512
(RCV mode)?
YES
NO
Check 7,9(SPK mode)/
3,5(RCV mode) pins in
HDC500
Signal on in
C405,C406
(SPK mode)?
YES
Check U401(open, short, etc)
NO
Check UCP300(open, short, etc)