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CP-S370W
16
No sound
Check at operating mode
Are signal input
NO
at each pin on the PWB
assembly Drive?
YES
CHV25 : Audio (L)
CHV33 : Audio (R)
PWB assembly Drive
Speaker
Can not control to RS-232C
Check at operating mode
Are the
signals input at each
pin of I306 on the PWB
assembly
Drive?
9
YES
13
PWB assembly Signal
PWB assembly Signal
Pin No
RS-232C
1
2
3
6
SEL0
7
RTS
9
10
GND
12
13
RDP
14
TDP
NO
: RX
PWB assembly Drive
: TX
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