14
TROUBLESHOOTING
PROBLEM CAUSES SOLUTIONS
No sample coin. Install the sample coin.
Sensitivity for coin passing the coin
mech is too high. Adjust the resistor to change the sensitivity.
Signal wire of coin is loose. Check the connection.
Coin mech is bad. Repair or replace the coin mech.
Micro switch is bad. Replace the micro switch.
Bad connection. Check and reconnect the wires.
Speaker is bad. Replace the speaker.
Wire is loose. Check and reconnect the wires.
Volume is too low. Twist the VR on main board to adjust the volume.
Bad connection of encoder. Check and reconnect the wires.
Encoder is bad. Replace the encoder.
No power input. Check the voltage and connection.
No VGA signal input. Check the main board and VGA wire.
Monitor is bad. Replace the monitor.
No voltage supply. Check the voltage and connection.
Bad connection of the lights. Check the connection.
Bad connection of stop sensor. Check and reconnect the wires.
Stop sensor is bad. Replace the stop sensor.
Bad connection of the rotation motor. Check and reconnect the wires.
Capacitor of rotation motor is bad. Replace the capacitor.
Control relay of rotation motor is bad. Replace the control relay.
Bad connection of the motor. Check and reconnect the wires.
Capacitor of motor is bad. Replace the capactor
Control relay of motor is bad. Replace the control relay.
Bad connection of stop sensor. Check and reconnect the wires.
Stop sensor is bad. Replace the stop sensor.
No AC110V/220V voltage input. Check the power input and connection.
No voltage output from power supply. Repair or replace the power supply.
Main board is bad. Replace main board.
Can not insert
coin
Coin in coin box
is invalid.
The game can
not go up /
down.
The game
rotation
continueously.
The game can
not move.
No sound.
START button is
invalid.
The light can not
work.
Can not control
direction of the
UFO of the game.
No reaction after
powering on the
game.
No display.
The game goes
up and down
continueously.