The reset is a physical switch, not a software command
A pachislo machine does not have a reset button on its screen or a menu option you can scroll to. The reset procedure is a physical action performed on the inside of the cabinet, usually by turning or pressing a keyed switch mounted on the power supply or the main control board. The machine's payout counter and credit meter are tied to that switch, which is why the procedure is described in maintenance manuals rather than in player-facing instructions.
The term "djs" in the query most often refers to a model or board marking found on certain imported pachislo units. Because pachislo machines were built for the Japanese home and parlour market and later imported in large numbers, model markings are not standardised across manufacturers. A procedure that works on one board revision may not match another, even when both machines look similar from the outside.
What the reset key does
Pachislo machines use a mechanical or magnetic keyed switch to access service functions. When the key is turned, the machine enters a service mode in which the operator can clear the credit meter, reset the payout counter, or change certain settings. On many units, the same key position also allows the hopper to be emptied or the odds setting to be changed, which is why the key is not left in the machine during normal play.
The reset key is a physical object, not a code. If the key is missing, the reset cannot be performed through the front panel. The machine must be opened, and the switch must be identified and operated directly. Some machines use a simple barrel key; others use a magnetic reed switch that responds to a magnet rather than a cut key. The difference matters because forcing the wrong tool into the lock can damage the switch and make the reset impossible without replacing the part.
Where the model-specific procedure is published
No single reset sequence applies to every pachislo machine. The authoritative source for a specific unit is the model's service manual, which is usually printed in Japanese and often includes a diagram of the control board with the reset switch labelled. Importers and enthusiast communities have translated many of these diagrams, but those translations are not uniform.
Before opening the cabinet, the reader should identify the machine's manufacturer and model number, which is typically printed on a plate inside the door or on the back of the cabinet. The model number is the key to finding the correct diagram. A search for that exact number plus the word "service manual" or "reset switch" will return the most relevant material. The reader should also note the board revision, because some manufacturers changed the reset switch position between revisions of the same model.
What to confirm before you open the machine
Opening a pachislo cabinet is a maintenance action, not a player action. The reader should confirm that the machine is unplugged before removing any panel, and should photograph the wiring before disconnecting anything. The reset switch is often near the power supply, and the power supply carries voltage even when the machine is off if it is still plugged in.
The reader should also confirm whether the machine has a keyed reset switch or a magnetic switch. The two types are operated differently, and using the wrong method can damage the switch. The service manual for the specific model will state which type is fitted. If the manual is not available, a clear photograph of the switch posted to an enthusiast forum will usually get a faster and more accurate identification than guessing.
| Reset component | What it does | What to confirm |
|---|---|---|
| Keyed reset switch | Enters service mode when turned with the correct key | Key type and turn direction from the service manual |
| Magnetic reset switch | Enters service mode when a magnet is held against the marked spot | Magnet position and hold duration from the service manual |
| Credit meter | Displays stored credits; reset clears it to zero | Whether the reset also clears the payout counter |
| Hopper | Holds and pays out tokens; may need emptying after a reset | Whether the hopper must be removed before the reset |
Why the machine may not reset even with the key
A pachislo machine that does not reset after the key is turned usually has one of three problems: the switch is faulty, the wiring between the switch and the control board is broken, or the machine is not in the correct service mode. The reset switch is a mechanical part, and after years of use it can fail to make contact. A multimeter can confirm whether the switch closes when turned.
If the switch closes but the meter does not clear, the fault is likely on the control board or in the wiring harness. That is a repair job, not a reset procedure. The reader should not attempt to bridge or bypass the switch, because doing so can send voltage to the wrong part of the board and cause damage that is more expensive to repair than the machine is worth.
What the reset does not do
A reset clears the credit meter and the payout counter. It does not change the machine's odds setting, and it does not make the machine more likely to pay out. Pachislo machines, like all slot machines, are governed by a fixed internal probability table. The reset switch is a maintenance function, not a player advantage. No sequence of key turns or resets changes the long-run expected loss on the machine.
The machine's outcome on any spin is determined by the internal random number generator and the probability table, not by the state of the credit meter. A reset machine and a machine with a full credit meter have the same odds on the next spin. The reset is performed to clear a stuck meter or to prepare the machine for a new session, not to influence results.
FAQ
Can I reset a pachislo machine without the key?
Not through the front panel. The reset switch is inside the cabinet, and the key is the tool that operates it. If the key is missing, the cabinet must be opened and the switch identified from the service manual. Some switches can be turned with a screwdriver if they are simple barrel types, but forcing the wrong tool can damage the switch. The correct approach is to identify the model and find the manual.
Does resetting a pachislo machine improve my chances of winning?
No. The reset clears the credit meter and payout counter. It does not alter the internal probability table or the random number generator. The machine's expected loss per spin is fixed by its design and does not change when the meter is cleared. A reset is a maintenance action, not a strategy, and no sequence of resets changes the long-run outcome.
Where do I find the reset instructions for my specific pachislo model?
The model number is printed on a plate inside the door or on the back of the cabinet. Use that exact number to search for the service manual. Many manuals are in Japanese, but translated diagrams exist in enthusiast forums and importer archives. The manual will show the reset switch location and the correct key or magnet procedure for that specific board revision.
Play responsibly
Gambling should be treated as paid entertainment, never as a way to earn income or recover losses. 1-800-MY-RESET (1-800-697-3738)
18+ or 21+ depending on where you are; follow the minimum age that applies to you.
This article is general information about how these mechanics work. It is not legal advice and not a recommendation to gamble or to use any particular operator. Availability and legality differ by jurisdiction — check the rules that apply where you are.