3
Three、Fault analysis and
Countermeasures
三、Fault analysis and Countermeasures
Failure
phenomenon
causes
measures
coin selector
can
’
t work
coin selector did
’
t set well.
counterfeit coin in the slot
Adjust the
coin selector and
resistance.
Take the
counterfeit coin out
Without ticket
output
Lottery machine without
12V input
Drive or cancel signal wire of machine
maybe loose.
Ticket wheel did’t put down
Ticket dispenser drive or ticket
cancellation terminal fault.
Ticket outputting didn’t set well in the
mainboard
Check the output voltage of the power
supply box and the circuit.
Check the change of signal and the circuit.
Put the ticket wheel down.
Replace the mainboard
Set mode to ticket output
Without music
Volume is too small
Circuit of sound output signal line was
broken
Speaker failure
Sound power amplifier fault.
circuit board failure
Whether the
the audio jack loose or
damaged.
Wherher the loudspeak is ok
turn the volume up
Connect line well
Replace
Speaker
Replace mainboard
Replace
circuit board
Connect the
the audio jack again
Turn on the loudspeaker switch to connect
the power.
