Mills Slot Machine Identification

INFORMATION FOR VIEWING AND DOWNLOADING

If there is a particular machine you want for your own, let us know, and we will find it. Wander through our website to see just a small sampling of the vast array of machines we deal in. Rest assured that all of our transactions are handled in a discreet professional manner. Here at SlotsEtc.Com, we pay the highest cash prices for quality. Provided your slot machine sets on a regular casino slot machine stand with holes in the top and the holes are aligned with the slot machine, those coins which bypassed the hopper will go down the chute, through the hole in the bottom of the machine, through the hole in the top of the stand, and into the open area in the stand cabinet.

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Bally Bingo Green Book -- Parts List and Exploded Diagrams of components.

Introduction to Bally Flipper Games.

Bally Broadway Bingo Pinball Operating Instructions. A schematic is available but must be commercially reproduced.

Mills slot machine model identification

Pace Slot Machine Award Cards, Hi-Res Scan.

Autobell Circus Schematic.

Bally Sportsman Flasher Slot Machine operating instructions, pay tables, etc. A schematic of the machine is available on request.

For Amusement Only sign furnished with Bally bingo pinball machines. Print on cardstock and put one on your machine.

Mills Bell Machine Parts and Service Manual HiTop 7-7-7 Model.

PAR sheet for Fourth of July.

Example of a Bally Bally SMI Sheet (PAR Sheet) in PDF format.

PAR Sheet possibly for a Double Bucks machine in PDF format.

Coin Mechanisms, Inc. See National Slug Rejectors and Coinco below.

Bally V-1088 and V-1090 Operator Instructions Manual.

Bally V-1297 Instructions and Bally V1297 Parts.

Bally Double Progrressive Operator Instructions using version 6 for use with Series 1000, E-2000, V-2000, S-5000 and V-5000.

Bally Deluxe Draw Bell Instructions and Award Cards. The award cards provided different values for the Special and Super Special for both Replay and Automatic Payout operation. Operators could tailor the payouts to the location. These cards are scanned at 300 dpi for quality reproduction. For other similar Bally machines, these cards can provide a guideline. Edit them with a photoshop-type program.

Two Mills catalogs from the early 1900's: The Mills Commercial trade stimulator and Mills Amusement, Skill & Vending Machines.

Keeney's Super Bell Operators Manual in PDF format. 1941 document.

Keeney's Bonus Super Bell Instruction Manual. This is a copy of a manuscript and is not the final manual, however it may assist you to understand the operation of the machine.

Mills Vest Pocket Slot Machine Operators Manual, 16 pages in PDF format.

Evans Consoles This is the 1941 Instructions and Parts Catalog for Galloping Dominos, Pacer, Bang Tails and Lucky Star. Much of this information can be applied to machines into the late 40's. The wiring diagram shows how it is laced together. This document is in PDF format. Adobe's free Acrobat Reader may be obtained Here.

Evans Winterbook Parts Manual in PDF format.

An Introduction to Bally Slot Machines, Manual 6000 1979. This is a good primer for Bally electro-mechanical slot machines. Page 22 corrects the myth of how the slot machine got its name--it certainly wasn't what I thought. This manual, in PDF format, is 45 pages in length and it is broken down into five parts for easier downloading. Adobe's free Acrobat Reader may be obtained Here.

National Slug Rejector and Coinco Service Manuals in .PDF format for some older equipment. Coin acceptors normally operate transparently, but they can surely be a nuisance when needing service or adjustment.

Mills Story and Catalog, Late '40s, an issue of Spinning Reels, has a brief history of Mills Novelty Co. with descriptions and depictions of then current Mills products. Ancillary equipment is described such as jack-in-the-box safes, regular safes, coin changers, coin counters and a bell machine tool set. In its day, the tool set cost about as much as a bell machine.

Jennings Chief Parts and Service Manual in PDF format. The scanned doucment was a poor copy so this is possibly just better than no manual at all.

Bally Slot Consoles parts list and description including Triple Bell and Deluxe Draw Bell. This includes pictorials of the reel assembly. A schematic for the Triple Bell is available from Internet Direct.

Bally Reflex Unit With Snap Switches used in Champion games through Serial No. 9053. They were not used in the companion game, Kentucky.

Buckley Track Odds 1938 Machine description, troubleshooting, partsand diagrams. About 80 pages. The file number = page number.

Buckley Track Odds Circuit Tracing Guide for machines 12,000-12,500.

***Some electrical drawings are available for the Buckley Track Odds machines on request. They must be commercially reproduced.

Model

Buckley Track Odds Remote Control installation instructions.

Bally Electro-Mechanical Slot Machine Manual. Covers Money Honey up to the 'computers' took over. The file numbers = page numbers in the manual.

Need more than a manual? Bally Electro-lMechanical Video Guide is available at nominal costs.Bally Electro-Mechanical Troubleshooting Reference. File 0000 is the index.

Limited Bally Coil Reference in a zip file for quick download.

The Last of the Bingo Kings -- Not exactly the Sopranos.

Bally Victory Special Setup Instructions showing some adjustments available to the operator.

Be sure to check the Links page for additional resources.

Pace Slotmachine Manual. Print sheets 1 to 10, turn paper over and print sheets 11 to 20. Fold to make booklet.

Bally Citation and Lexington One Balls A schematic is also available, but too large to scan. Documents for Bally Trophy, Jockey Club, Turf King, Grandstand and Futurity are available on request.

Directions for Operating Mills Operator's Bell COK and FOK Mint Vender.

Bally Triple Draw Bell adjustments. Schematic and Relay/Switch chartsare available from Internet Direct Also available from Internet Direct are documents forBally Triple Bell, Bally Spot Bell, Bally Turf King and Kentucky.

Mills Slot Machine Identification

Williams: An Introduction To Coin Operated Amusement Games This document is long --66 pages in .PDF format. Amusement machine components are discussed however many aspects apply to gambling machines. Schematics are explained. There is a lexicon of coin machine terms. Adobe's free Acrobat Reader may be obtained Here.

Metal Forms Products Company I have not seen this company referenced anywhere on the WWW, however they manufacture hard to find mechanical slot parts for Mills, Jennings, Caille, Watling, etc. Their inventory includes vendors, springs, reel tins, discs, disc plugs, cash boxes, back doors, decals and back door paper for restoration. If you have been looking for a hard-to-find part to get your project working, you may find it here. The file number = catalog page.

Mike Munves catalogstill missing 4 pages. Here is a look back in history to 1956 and the machines available. All these games were before video games. The pricing is interesting. Keep in mind that a very good job in 1956 paid $500 monthly. There are 6 files in PDF format to facilitate downloading. Adobe's free Acrobat Reader may be obtained Here.

This is a 16-page Mike Munves 1940 Catalog. The catalog was scanned from a b/w xerox copy of original (or perhaps another copy) and does not have very good detail. It does give a feel for what was then available. This file is in PDF format.

This Ray Oakes & Sons Amusement Trade Catalog from 1960 is of interest to our outdoor amusement friends. I do not believe that they are in business any longer.

Keeney Big Tent Manual. This is a flasher slot. I have the schematics but they are too large for my scanner. I can have them reproduced on request.

K. C. CARD CO CATALOG, 1960. This catalog is a textbook all its own in controlled gambling equipment. An 8-page supplement added near the middle of the catalog offered devices manufactured by H C Evans Co or their successors. The original H C Evans Co was liquidated in 1956 following the death of its owner. PDF format. Adobe's free Acrobat Reader may be obtained Here.

Tax Matters.The operators were not without their hassles. From my experience with bingos, it is hard to believe the payoff percentages of the machines discussed. This document is in PDF format. Adobe's free Acrobat Reader may be obtained Here.

H C Evans Co Catalog. For those who have never seen a copy, this catalog is a tell-all of controlled gambling and carnival equipment. If you ever thought that you were fleeced at a gambling game, you may find the answer here.

Evans Club, Park and Carnival Equipment with 1961 price list. This catalog was issued by the Evans Park & Carnival Device Corporation, successors to H. C. Evans & Co. I do not believe any catalogs of Evans equipment were published after this one. I do not know how long the company remained in business after 1961.

More for our outdoor amusement friends -- A collection of Wurlitzer Band Organ Music.

Games, Inc WILDCAT Service Instructions and Parts Catalog in a 10-page .PDF format document. Adobe's free Acrobat Reader may be obtained Here.

H C Evans 1909-1910 Catalog. This Evans catalog includes pages advertising sporting goods such as baseball gloves, firearms (a shotgun for $5) and fishing rods, reels and tackle.

Bally Series E Link Progressive System Operators Manual.

Mills Automatic Money Makers, a catalog of early Mills machines.

Caille Brothers Catalog of early slot machines and trade stimulators.

Mills Trade Stimulators catalog, early 20th century.

PEPLUS video poker machine info.

Program Summary Reports examples for some S Plus machines.

IGT Program Index.

Williams Upright Video Slot information.

Pot Of Gold manual.

If you have a slot machine or you have bought one old used vintage slot machine and want to have some fixes to get it work then obviously you will think you need a machine technician. Many of you will even think of taking it to some repair station to get things done. But here in the guide you will find some of the repairs that you yourself can do with your slot machine and you need not need to join machine technical repair training school.

Like any other machines Slot machines too are a blend of electronic and mechanical components, that wear with age and require routine repairs. Before you begin to repair yourself do note that every slot machine that you have purchased whether old or new comes with installation and user guide manual. You need to read that many a times until you are familiar with each components and parts of the slot machine and understand thoroughly as how the slot machine works.

In your guide to repair slot machines you will find some common repairs that can be carried out by you, some videos to watch as well. If your slot machine has some complex issue then obviously you require a qualified technician.

Changing the Top Florescent Light

The top florescent light bulb is easily changed by following these simple procedures. The replacement bulb is an F15T8/CW 18″ 15 Watt bulb which is available at most hardware and department stores or may be purchased online at Ebay or Amazon or realslotmachinesforsale under the category ‘parts of slot machine’.

  • Open the main slot machine door and ensure the door is fully open. Turn off the power to the slot machine. The power switch can be found with the main door open about midway down on the right side just inside the machine.
  • If the machine is equipped with a top ticket printer, you must pull the bottom of the printer out far enough to see where the ticket paper is located, and note the area large enough to place a couple of your left fingers under.
  • Remove the top metal trim strip which is a cover plate to the right of the ticket printer and/or is located along the bottom of the top glass. There are a couple of clips on the back of the metal trim strip that fit into notches on metal bracket which holds the top glass. The metal trim strip should be lifted upwards and outwards to remove.
  • Once the metal trim strip is removed, the next step is to remove the top glass. Note that some top metal trim strips have a slot in the top that holds the top glass and they must be removed very carefully as to not damage or drop the top glass.
  • You can now see the top glass is held in place by usually two or three clips that rise above the metal bracket behind the top metal trim strip. Now slowly lift up on the top glass from both bottom edges until the top glass until it is high enough to gently pull it forward and allowing it to slide down and away from the top track and clips holding it in place.
  • Once the top glass has been removed, put it somewhere where it will not get knocked over or broken. You will see the florescent bulb in the middle of the top box area of the machine. Care should be taken removing the bulb as it may be very hot. Remove the old bulb by twisting the florescent tube about a quarter to half turn allowing the two prongs on the bulb to slide out of the fixture on both sides of the bulb.
  • Remove and discard the old bulb. To install the new bulb, align the two prongs on each side of the florescent tube with the slits on each fixture in the top box of the slot machine. Twist the bulb into place normally using about a quarter to half of a turn. If the bulb is not secure or aligned, repeat the procedure.
  • If your slot machine is an IGT S Plus machine, it is equipped with a florescent bulb starter. Then you can replace the starter when replacing the florescent light bulb. The starter is an FS-U Universal Starter. They are available at most hardware and department stores or may be ordered online too. The starter for the top florescent bulb on an IGT S Plus machine is located directly behind the florescent bulb fixture on the left side of the slot machine in the top box area.
  • It is replaced by twisting about a quarter to half a turn as it is held in place with a bayonet type mount. Remove the old starter and discard. Replace with a new FS-U Universal Starter by aligning the two pins on the bottom of the starter with the notches in the starter receptacle, pushing it up into the starter socket, and then twisting it a quarter to half a turn into place.
  • Prior to re-installing the top glass, turn the power switch on the right inside of the machine on to verify the bulb works properly. If it does not, turn the power off and check that the bulb is properly installed and secure. If replacing a starter, check that it is also properly installed and secure.
  • After verifying the bulb is working, it is now time to replace the top glass. If your slot machine has a top ticket printer, ensure the ticket printer is still pulled out so you can place your fingers in the opening while replacing the top glass.
  • Carefully and slowly lift up the top glass placing each hand under the bottom of the top glass. Slide it into the upper edge track on the top box of the slot machine carefully lifting it so it slides into the tracks while being able to push the top glass back far enough to clear the two or three raised clips on the metal bracket where the top glass holding track is located.
  • Gently and slowly lower the top glass behind the clips so as to allow them to hold the glass in place. If properly secured, the top glass will not be able to slide down or out of its position. Keep a secure hold on the top glass until you are certain it is secured in the proper position.
  • Replace the top metal trim strip by aligning the two or three hooks the back through the metal bracket that supports and holds the top glass. Once the hooks on the back are in place, gently push the top metal trim strip down and it should snap into place. If you have a slot machine with a top ticket printer, close it tight into position. Close the main slot machine door and you are ready to play.

Changing the Belly Glass Florescent Light

The belly glass florescent light bulb is easily changed by following these simple procedures. The replacement bulb is an F15T8/CW 18″ 15 Watt bulb which is available at most hardware and department stores or may be bought online as spare parts of slot machine.

  • Open the main slot machine door. Turn off the power to the slot machine. The power switch can be found with the main door open about midway down on the right side just inside the machine.
  • Facing the slot machine door, look on the right side of the door just around from bill acceptor area. You will see a knob sticking out that is approximately the size of the end of a regular pencil. This knob when pulled out releases the slot machine belly glass assembly (belly door) to fold down so the bulb can be accessed.
  • There are a couple of very important thing to remember prior to pulling this knob to release the belly door. First try pulling gently on the knob. If it does not allow you to pull out and you have a lock installed directly above it, the lock must unlocked in order to allow the release knob to pull out. When pulling out the release knob, be ready for the belly door to fold down.
  • Most of the time you must lightly pull on both sides of the belly door to get it to fold down, however always place your hand under it so it does not fall down too quickly causing the belly glass to break or crack.
  • Once the belly door is in the down position, you will see the access to the florescent bulb bracket that is held in place by a small Phillips screw. Remove the screw and place it the coin tray so it will be handy when you need it after replacing the bulb.
  • The long metal bracket that holds the florescent bulb must be slid slightly right or left so as to be able to lift it out of the belly door. Gently lift the metal bracket with florescent bulb out of the assembly far to be able to turn it over to replace the bulb. Be cautious as the bulb could still be hot!
  • Grasp the metal bracket holding the florescent bulb and remove the old bulb by twisting the florescent tube about a quarter to half turn allowing the two prongs on the bulb to slide out of the fixture on both sides of the bulb.
  • Remove and discard the old bulb.To install the new bulb, align the two prongs on each side of the florescent tube with the slits on each fixture that is on each side of the new bulb. Twist the bulb into place normally using about a quarter to half of a turn. If the bulb is not secure or aligned, repeat the procedure.
  • Now turn the metal bracket that holds the newly installed bulb over and back into position in the belly glass assembly. Slid the bracket slightly right or left into position and replace the small screw which holds the metal bracket in place.
  • If your slot machine is an IGT S Plus machine, it is equipped with a florescent bulb starter. So you need to replace the starter a well when replacing the florescent light bulb. The starter is an FS-U Universal Starter. They are available online and you can purchase one.
  • The starter for the belly glass florescent bulb is located on the back of the main slot machine door on the lower right hand corner as you face the back of the door.
  • It is replaced by twisting about a quarter to half a turn as it is held in place with a bayonet type mount. Remove the old starter and discard. Replace with a new FS-U Universal Starter by aligned the two notches on the bottom of the starter, pushing it into the starter socket, and then twisting it a quarter to half a turn into place.
  • Prior to closing the belly glass door, turn the power switch on the right inside of the machine on to verify the bulb works properly. If it does not, turn the power off and check that the bulb is properly installed and secure. Also check to ensure the starter is properly installed and secured.
  • Lift the belly glass assembly up and push it into place in the slot machine door. Ensure the belly glass door snaps into place and the knob on the side of the door is in its normal position. It is spring loaded so as to not allow the belly glass assembly to open unless it pulled. If the belly door appears to be in place, pull on both sides of the belly door to make sure it is locked and secure.
  • If you unlocked the lock above the knob, re-lock it. Close the main slot machine door and you are ready to use your slot machine.

Changing the Push Button Bulbs

All of the slot machine’s push button lights such Play Max Credits, Spin Reels, Bet One Credit, etc. are easily replaced by following this simple procedure. The replacement bulbs are #161 on IGT S2000 machines and #555 on IGT S+ machines and may be purchased from online stores.

  • Fully open the slot machine door. Look on the backside of the door. Each push button will extend down from the shelf on the door and will have a small wire bundle going to it. Identify which push button bulb needs to be replaced.
  • Carefully pull down on the bottom of the push button area that is normally white and is where you will see wiring connected. Using your thumb and two fingers, pull straight down and the bottom portion of the push button should snap out.
  • You will now be able to see the bulb in the top area of the lower push button assembly. Use caution as the bulb may be very hot. Pull the wedge bulb out and discard it. Notice the slot in which the bulb located.
  • Place a new bulb in the slot noting the direction of slot ensuring the new wedge bulb is inserted so as to line up in the slot. Push the new bulb into place.
  • Replace the bottom of the push button assembly by inserting it into the top portion of the push button assembly. The bottom portion will snap into position. Ensure that none of the wire connections have been accidentally knocked loose on the bottom of the push button. Note the push button light will not illuminate until the slot machine door is closed. Close the main slot machine door and you are ready to play.

Changing the Small Panel Lights

Mills Slot Machine Identification

The small panel lights that illuminate the denomination amount and other areas behind the glass are easily changed. For denomination amount lights on the IGT S2000, a #73 bulb is needed and a #86 bulb is needed on the IGT S+ slot machines. They may be bought online from slot machine selling sites.

Here it is described as how to change the lights behind denomination amounts such as .25 Cents. Other small panel light bulbs are changed in the same manner.

  • Fully open the slot machine door. Look on the backside of the door. Note the location where the denomination amount would be located near the center just below the slot machine’s center glass. The area will appear to be flat with a small bulb holder projecting out that is slightly larger in diameter than a regular pencil and is flat on two or four sides.
  • This bulb holder is removed by simply twisting it a quarter to half a turn and then gently pulling it out of its socket. It is held in place by somewhat of a bayonet type mount.
  • Once the bulb holder is removed, pull the wedge bulb out of the socket and discard the old bulb. Caution should be taken as the old bulb may be very hot. Replace the bulb by firmly inserting a new bulb into the socket of the bulb holder being careful to align the wedge bulb correctly into the slot.
  • Take the bulb holder and look for two notches on each side of the opening where the bulb holder is inserted. Note there are two notches on the bulb holder. Align the notches inserting the bulb holder into the panel.
  • Gently twist the bulb holder about a quarter to half a turn to lock it into place. Verify the bulb is illuminating, and if not repeat the procedure using a different new bulb. Now close the main slot machine door and ready to use.

Cleaning Your Slot Machine

This is common thing and all you need is usually nothing more than a damp cloth to clean the exterior cabinet of your slot machine. Never use any abrasive or ammonia based cleaners on the cabinet of the machine.

The slot machine top, center and belly glasses may all be cleaned on the outside by using a window cleaner. However if you own a slot machine with a frosted exterior glass or one that has any exterior decorated markings such as stars, a window cleaner should not be used as the cleaner may damage the exterior images. Care should be taken cleaning interior glass as a cleaner and cloth may damage labels or markings.

The inside of the slot machine should not require cleaning other than occasionally removing dust. This can normally be done with a damp clean cloth, however ensure the power switch has been turned off prior to cleaning.

When wiping dust inside your machine, be careful not to loosen any wires or connections. Do not use a damp cloth on the face of your reel strips as the playing symbols on the reel strips could come off or become torn. Also be very careful not to touch the back side of your reel strips with a damp cloth especially if the back sides of the reel strips are black. This can cause damage to this type reel strip.

When your Slot Machine Doesn’t Power On

When you get a slot machine and wish to locate or set up at your place, determine the household 120V AC outlet you are planning to use has power. Keep in mind some outlets are controlled on and off by a wall switch.

  • With the slot machine unplugged from the outlet and surge protector, open the slot machine main door. Remove the coin tray by lifting up and pulling out the tray. Simply pull it out and down to remove the tray.
  • The hopper is on the bottom floor of the machine and slides out on two base rails along two metal guides. Slide the hopper out slowly by grasping the handle with your left hand and supporting the hopper with your right hand. Do not use the black hopper bowl to pull the hopper out of the slot machine.
  • On the lower right corner of the slot machine you should see the black power cord coming into the machine. The power cord plugs into the Power Distribution Unit which is located on the back wall of the slot machine.
  • Verify the power cord is firmly plugged into place into the right side of the Power Distribution Unit.
  • Place the hopper back into the slot machine making sure it slides in easily and completely with the base rails on hopper guides on the bottom of the machine. The hopper plugs into a receptacle toward the back of the machine. It is designed to fit in easily without using excessive force.
  • The coin tray can be easily put back into place by ensuring the alignment pins on the coin tray match up to the top alignment holes on the bottom side of the machine. The tray should be pushed down into place. Make sure the tray is even when pushed into place. If the coin tray is not aligned and even, remove the coin tray, and repeat the procedure.
  • Verify the power cord is firmly plugged into a good surge protector. Plug the end of surge protector into the outlet you have verified is good, and make sure the on/off switch on the surge protector is turned on.
  • Now turn the power switch on the inside right of the slot machine to the on position and verify the slot machine is powered on by lights illuminating.

Jackpot Payout Reset

When your slot machine just hit a 25,000 credit Jackpot it now needs to be reset to continue playing. Depending on the model slot machine you have and the amount of the payout will determine the best course of action.

If you have an IGT S+ Slot Machine and your win is under the maximum payout amount specified on the center glass of the machine, the hopper may run out of coins or tokens. This is normally displayed by Error Code 3300. In this case it usually a simple matter of taking the coins or tokens that have been paid out and putting them back in the hopper allowing it to fully pay out. However, if you won a large jackpot that is “hand pay out”, then follow the steps below.

  • First open the main slot machine door. Locate the Jackpot Key which is normally kept inside the slot machine in a plastic envelope on the side of the cash box. If you do not find it inside the machine, often times the Jackpot Key will be strapped with the main slot machine door key. It is a small key as pictured below.
  • Take the key in hand and locate the jackpot reset which is a keyhole located on the right side of the slot machine. It is normally about two-thirds up from the bottom of the machine.
  • Insert the Jackpot Reset Key into the keyhole. Turn the key only one quarter turn to the right. This will reset the machine, and once you close the main slot machine door, you will be ready to resume play.
  • Note that if you turn the Jackpot reset key multiple times you may place your slot machine into a test mode and will thus delay your ability to continue playing.

Some of the Error Codes you get on Slot Machine

Error Code 3300 (IGT S+ Machines)

Mills Slot Machine Model Identification

Simply put Error Code 3300 is normally telling you your hopper is low on or completely out of coins or tokens.

Open the main slot machine door. Look into the hopper. If it is empty or has just a few coins or tokens, place about 500 coins or tokens back into the hopper. Close the main slot machine door. In a few moments you should hear the sound of the hopper’s motor turning and soon the remaining coin payout will begin.

Error Code 3100 (IGT S+ Machines)

Error Code 3100 (Extra Coin Out Tilt) normally signifies either a jammed/stuck coin or token in the coin-out chute on the hopper, or the hopper coin-out sensor has detected the hopper may have paid out an extra coin.

  • Open the main slot machine door. Remove the coin tray by lifting up and pulling out the tray. Simply pull it out and down to remove the tray.
  • The hopper is on the bottom floor of the machine and slides out on two base rails along two metal guides. Slide the hopper out slowly by grasping the handle with your left hand and supporting the hopper with your right hand. Do not use the black hopper bowl to pull the hopper out of the slot machine.
  • Inspect the hopper to determine if any coins/tokens appear to stuck or jammed in the hopper knife or the hopper coin-out channel.
  • If a coin appears to be stuck or jammed, empty the hopper of coins/tokens for easier access to clearing the jammed coin/token.
  • Once the stuck or jammed coin has been removed, place the hopper back into the slot machine making sure it slides in easily and completely with the base rails on hopper guides on the bottom of the machine. The hopper plugs into a receptacle toward the back of the machine. It is designed to fit in easily without using excessive force
  • Refill the hopper with the proper size coins or tokens. The coin tray can be easily put back into place by ensuring the alignment pins on the coin tray match up to the top alignment holes on the bottom side of the machine. The tray should be pushed down into place. Make sure the tray is even when pushed into place. If the coin tray is not aligned and even, remove the coin tray, and repeat the procedure.
  • Close the main slot machine door. The error code should be gone and the machine is ready to play.

Error Code 12 (IGT S+ Machines)

The 3.6 volt battery on the slot machine CPU Board normally lasts for years. However when an Error Code 12 is displayed, this is an indication the battery voltage has dropped below 2.9 volts and is now a low battery.

It is recommended to replace the battery as soon as possible. They can be purchased online from ebay, amazon or realslotmachinesforsale. When ordering a replacement battery, they will provide you with detailed instructions on how to change this battery which is located on the slot machine’s CPU Board.

Mills Slot Machine Identification

In order to reset Error Code 12 temporarily, simply open and close the main slot machine door. It is important not to wait for a long time to replace the battery as data stored on the RAM may be lost. Replace the battery Asap.

Following are some of the other error codes that might interest you to solve your problem in repairing the slot machine

CODEDESCRIPTIONPROBLEM
12Low BatteryBattery voltage on processor board has dropped below 2.9 volts DC
21Coin-In TiltOptic coin-in sensors were blocked
3100Extra Coin OutStuck/jammed coin in hopper or optic sensor detects extra coin paid
3200Coin-Out TiltHopper coin-out sensor was blocked
3300Hopper EmptyHopper coin-out sensor sensor detects no coins were dispensed for 8 seconds or more. Hopper needs to be refilled with coins/tokens.
41Reel #1Tilt Designated reel is misaligned or malfunctioning
42Reel # 2 TiltDesignated reel is misaligned or malfunctioning
43Reel #3Tilt Designated reel is misaligned or malfunctioning
44Reel #4Tilt Designated reel is misaligned or malfunctioning
45Reel #5 TiltDesignated reel is misaligned or malfunctioning
49Reel Mechanism DisconnectedA reel mechanism has become unplugged or the circuit is interrupted
61CMOS RAMBad CMOS RAM data or data was cleared
62-0Bad Game EPROMGame program or data program check
62-1Bad Data EPROMBad EPROM data
63Processor Tray OpenMain processor door has been opened and closed since last game played
65-0Bad EEPROM DeviceProcessor could not successfully read from or write to chip
65-1Bad EEPROM DataData is invalid or corrupted
65-2Game Type MismatchGame data om CMOS RAM does not match game data in EEPROM
66Game EPROM ChangedMachine senses the game EPROM has been changed
67Data EPROM ChangedMachine senses the data EPROM has been changed
68Non-Compatible Data EPROMData EPROM is not a standard file
99-1Bill ValidatorStacker jam
99-2Bill ValidatorCash box removed
99-4Bill ValidatorCash box full
99-5Bill ValidatorHardware error
99-6Bill ValidatorReverse bill detected

Hopper is Full and Coins Go Down a Chute to Bottom of Machine

Slot machines that accept coins were designed this way because when used constantly on the casino floor, hoppers could quickly fill. There is a coin level probe on side of the hopper that looks like a brass screw sticking inward toward the hopper bowl. This probe detects when coins/tokens are at a selected level, and will cause the subsequent coins/tokens played to go down a chute to the bottom of the slot machine.

Provided your slot machine sets on a regular casino slot machine stand with holes in the top and the holes are aligned with the slot machine, those coins which bypassed the hopper will go down the chute, through the hole in the bottom of the machine, through the hole in the top of the stand, and into the open area in the stand cabinet. As casinos have done for years, place a small plastic tub in the slot machine stand cabinet to collect these excess coins.

Retrieving Currency from the Cash Box

Though not all slot machines are equipped to accept currency in order to comply with certain laws but if your slot machine is equipped with a bill acceptor, bill transport and cash box, the bills in the cash box can easily be retrieved.

  • Open the slot machine main door. The cash box door is located just under the yellow chute for the bill acceptor. Ensure the cash box door is fully open.
  • On the right side of the cash box toward the top is a release level. Push release lever down and pull the cash box straight out toward you. If the cash box seems difficult or impossible to pull out, make sure you have pushed the release lever down.
  • Hold the cash box in both hands and turn it upside down. Notice on the bottom of the cash box is a door which has two small finger sized holes on one side. Normally the door is held closed by a small piece of electrical tape so the bottom cash box door doesn’t come open while removing it from the cash box chassis of the slot machine.
  • While holding the cash box with the bottom door up toward you, open the door and you will see where the bills are stored. The large spring expands as more and more bills are added to the cash box. Remove the bills by pulling them straight out.
  • Close the bottom door of the cash box and re-secure the door using the same small piece of electrical tape. Turn the cash box around to the original position when you removed it from the slot machine.
  • Align the flat top of the cash box with the flat surface at the top of the cash box chassis from which you removed it. Slide it firmly into place. Now close the cash box door and the main slot machine door and you are ready to use it for gaming.

All the content, graphics and videos in this post have been gathered by research for you from various online sources and hope this helps you as a guide to repair your slot machines. Note that many guide books and manuals too are there for you to buy from online stores which are handy to know as how to repair your slot machines. Just stay tuned at realslotmachinesforsale and know many more interesting information about slot machines.