Weak Claw
A weak claw problem is very common in a claw machine, and this condition makes customers feel that they cannot grab the items inside, which affects the gaming experience. Usually, the main reasons for weak claws are either insufficient voltage or worn-out springs. The electromagnet is the main contributor to a claw’s power, and when the applied voltage is below the normal value, it won’t provide the necessary force. The first thing to check, therefore, is the power voltage output and ensure that it’s within the correct range. If the voltage is fine, the next thing to check is the spring of the claw.
The tension of the spring directly relates to the strength of the claw. In machines that are in daily use, the springs will gradually loosen, and the grip strength will weaken. Try to use springs whose specifications match the original parts when replacing them so that the claw strength can return to normal. Also, regularly lubricating the claw can reduce the loss of grip strength, and cleaning will prevent dirt from affecting the claw’s movement.
Some high-end claw machines offer the ability to adjust the claw’s strength using software. When adjusting, follow the manufacturer’s recommendations and set the maximum range of the settings. Generally speaking, the strength of the claw should be set at 3 to 4 kgs to give players a decent chance of winning.
Claw Won’t Close
When the claw cannot close, it is often related to issues with the electromagnet or gear system. Whether the claw can close depends on the functionality of the electromagnet. If the electromagnet is burnt out or the coil has aged, the claw will malfunction. The solution is to first test the electromagnet by measuring its resistance using a multimeter. Normally, the resistance should be within a specific range, around 20 to 30 ohms. If the resistance is abnormal or even infinite, then the electromagnet should be replaced.
The mechanical structure of the claw should be checked. The claw closes through gears, and if the gears are worn or jammed, the claw cannot shut smoothly. In such situations, the claw assembly should be dismantled, and the gears checked for wear. If the gears are worn or missing teeth, the parts should be replaced immediately. In other cases, if the jamming is caused by dirt, an appropriate amount of lubricant can be applied to the gears to ensure smooth operation, allowing the claw to close properly.
Some claw machines are equipped with a force adjustment function, allowing you to adjust the claw strength through the control board. Set the claw strength so that it can close properly when grabbing an item. If it still won’t close, check the program settings through the control panel for any issues.
Claw Doesn’t Return to Starting Position
This issue occurs when the claw fails to return to its original position after a failed grab or at the end of an operation. This is usually caused by a motor failure or a problem with the control board. The claw’s return action is driven by the motor above the claw, so the first step is to check if the motor is overheating or if it is operating inconsistently. You can identify whether the motor needs to be replaced by noting any unusual noise or heat generated during operation. Ideally, the motor’s operating temperature should be below 60°C.
If the motor is functioning correctly, the issue may lie with the position sensor or limit switch. The claw relies on sensors to detect its position during movement. If the sensor is faulty or there’s a loose connection, the claw won’t return to its starting position. You can recalibrate the sensor or replace the limit switch to resolve the issue. During calibration, ensure the sensor’s sensitivity is within an appropriate range to avoid significant errors.
The control board can also malfunction, resulting in output signal issues. After checking the hardware, if both the motor and sensor are working properly, inspect the control board’s connections and signal output to ensure the circuits are functioning correctly. If necessary, reinstall or upgrade the control board firmware to fix the claw’s failure to return to the starting position.
Abnormal Range of Motion
The claw’s abnormal range of motion is often caused by a faulty limit switch or control system errors. If the limit switch ages or fails, the claw’s movement range may exceed or fall short of the intended range. To fix this issue, first inspect the limit switch to check for bad contact or aging. If the switch is damaged, replace it promptly.
Worn-out tracks or drive belts can also cause abnormal claw movement. The claw moves along tracks in the machine, and if the tracks haven’t been cleaned for a long time, they may accumulate dust or wear out, causing irregular movement. This can lead to inaccuracies in the claw’s range of motion. Regularly cleaning and lubricating the tracks can help prevent this issue.
In some high-end claw machines, the range of motion can be adjusted through the control panel’s software. Enter the system settings and recalibrate the range of motion to ensure the claw moves within the preset limits. If the problem persists after adjustment, you may need to upgrade or replace the control board.
Jerky Movement
Jerky movement of the claw is typically caused by either mechanical or electrical issues. The most common cause is dirt, debris, or insufficient lubrication on the tracks. Tracks that haven’t been cleaned for a long time can accumulate dust, causing the claw to move less smoothly. Regularly clean the tracks and apply an appropriate amount of lubricant to ensure the claw moves freely along the tracks. Lithium-based grease is generally recommended, as it prevents dust buildup without being too sticky.
The claw’s drive system consists of belts or chains. A loose belt or worn-out chain can cause jerky movement. Regularly check the belt tension and adjust it as necessary to ensure smooth movement.
Check the motor’s operation. If the motor overheats or there’s an internal circuitry issue, it could cause jerky movement. The motor’s noise and temperature fluctuations during operation are key indicators of whether it needs to be replaced.
No Response After Inserting Coin
When a player inserts a coin and the machine doesn’t respond, the issue may lie with the coin mechanism or motherboard. The coin mechanism triggers the game, so the first thing to check is its condition. Make sure there are no stuck coins and clean the coin mechanism regularly as part of routine maintenance. If the coin mechanism is damaged or unable to recognize coins, try replacing or recalibrating it.
Next, check the wiring between the coin mechanism and the motherboard. If a wire is loose or disconnected, the coin signal won’t reach the motherboard, preventing the game from starting. Use a multimeter to test the coin mechanism circuit and ensure smooth signal transmission.
If the coin mechanism and wiring are functioning properly, the problem may be with the motherboard. The motherboard controls the entire game, and if it’s faulty, all functions of the claw machine will be affected. If a motherboard issue is confirmed, contact the supplier for repair or replacement.
Display Problems
The display is an essential part of the claw machine’s interaction with players. When the display malfunctions, players cannot receive feedback. Common display issues include a black screen, flickering, or incorrect display. First, check that the power cable to the display is securely connected. If the power cable is loose, the display won’t work properly.
If the connections are fine, check whether the fuse has blown. A blown fuse can cause the entire display system to fail. Replace the fuse if necessary and check whether the display driver board is damaged. If the driver board or motherboard is faulty, seek professional repair or replacement.
