Suzuki S-1800H80/180, Technical Manual

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NO
YES NO
YES
NO
YES
*
Some dust or dirt on the keys leads the switch ON.
Remove some dust or dirt to back to the normal state if key control.
NO
YES
NO
YES
-27-
Key operation is not accepted.
Are all keys not accepted in
Monitor Unit?
CONTROL PCB
*
Is there a short circuit at any of
the key switches?
MAIN PCB KEY SWITCH DISCONNECTION
Is the only one key not
accepted?
"Beep" is not heard when a key is pressed.
Verify that 12 volt is present at 12V
check pin in Main PCB for Monitor
Unit.
POWER SUPPLY PCB
Is the output waveform of the
buzzer circuit normal when a
key is pressed?
MAIN PCB
Replace the buzzer.